ZFS vnode lock deadlock in zfs_fhtovp was: High Kernel Load with nfsv4
Loïc BLOT
loic.blot at unix-experience.fr
Sat Dec 20 10:17:23 UTC 2014
Hi Rick,
ok, i don't need locallocks, i haven't understand option was for that
usage, i removed it.
I do more tests on monday.
Thanks for the deadlock fix, for other people :)
--
Best regards,
Loïc BLOT,
UNIX systems, security and network engineer
http://www.unix-experience.fr
Le jeudi 18 décembre 2014 à 19:46 -0500, Rick Macklem a écrit :
> Loic Blot wrote:
> > Hi rick,
> > i tried to start a LXC container on Debian Squeeze from my freebsd
> > ZFS+NFSv4 server and i also have a deadlock on nfsd
> > (vfs.lookup_shared=0). Deadlock procs each time i launch a squeeze
> > container, it seems (3 tries, 3 fails).
> >
> Well, I`ll take a look at this `procstat -kk`, but the only thing
> I`ve seen posted w.r.t. avoiding deadlocks in ZFS is to not use
> nullfs. (I have no idea if you are using any nullfs mounts, but
> if so, try getting rid of them.)
>
> Here`s a high level post about the ZFS and vnode locking problem,
> but there is no patch available, as far as I know.
>
> http://docs.FreeBSD.org/cgi/mid.cgi?54739F41.8030407
>
> rick
>
> > 921 - D 0:00.02 nfsd: server (nfsd)
> >
> > Here is the procstat -kk
> >
> > PID TID COMM TDNAME KSTACK
> > 921 100538 nfsd nfsd: master mi_switch+0xe1
> > sleepq_wait+0x3a sleeplk+0x15d __lockmgr_args+0xc9e
> > vop_stdlock+0x3c VOP_LOCK1_APV+0xab _vn_lock+0x43
> > nfsvno_advlock+0x119 nfsrv_dolocal+0x84 nfsrv_lockctrl+0x14ad
> > nfsrvd_locku+0x283 nfsrvd_dorpc+0xec6 nfssvc_program+0x554
> > svc_run_internal+0xc77 svc_run+0x1de nfsrvd_nfsd+0x1ca
> > nfssvc_nfsd+0x107 sys_nfssvc+0x9c
> > 921 100572 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100573 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100574 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100575 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100576 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100577 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100578 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100579 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100580 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100581 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100582 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100583 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100584 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100585 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100586 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100587 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100588 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100589 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100590 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100591 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100592 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100593 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100594 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100595 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100596 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100597 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100598 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100599 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100600 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100601 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100602 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100603 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100604 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100605 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100606 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100607 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100608 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100609 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100610 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100611 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100612 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100613 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100614 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100615 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100616 nfsd nfsd: service mi_switch+0xe1
> > sleepq_wait+0x3a _sleep+0x287 nfsmsleep+0x66 nfsv4_lock+0x9b
> > nfsrv_getlockfile+0x179 nfsrv_lockctrl+0x21f nfsrvd_lock+0x5b1
> > nfsrvd_dorpc+0xec6 nfssvc_program+0x554 svc_run_internal+0xc77
> > svc_thread_start+0xb fork_exit+0x9a fork_trampoline+0xe
> > 921 100617 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100618 nfsd nfsd: service mi_switch+0xe1
> > sleepq_wait+0x3a _sleep+0x287 nfsmsleep+0x66 nfsv4_lock+0x9b
> > nfsrvd_dorpc+0x316 nfssvc_program+0x554 svc_run_internal+0xc77
> > svc_thread_start+0xb fork_exit+0x9a fork_trampoline+0xe
> > 921 100619 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100620 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100621 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100622 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100623 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100624 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100625 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100626 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100627 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100628 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100629 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100630 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100631 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100632 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100633 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100634 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100635 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100636 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100637 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100638 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100639 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100640 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100641 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100642 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100643 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100644 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100645 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100646 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100647 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100648 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100649 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100650 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100651 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100652 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100653 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100654 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100655 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100656 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100657 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100658 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100659 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100660 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100661 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100662 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100663 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100664 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100665 nfsd nfsd: service mi_switch+0xe1
> > sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > fork_trampoline+0xe
> > 921 100666 nfsd nfsd: service mi_switch+0xe1
> > sleepq_wait+0x3a _sleep+0x287 nfsmsleep+0x66 nfsv4_lock+0x9b
> > nfsrv_setclient+0xbd nfsrvd_setclientid+0x3c8 nfsrvd_dorpc+0xc76
> > nfssvc_program+0x554 svc_run_internal+0xc77 svc_thread_start+0xb
> > fork_exit+0x9a fork_trampoline+0xe
> >
> >
> > Regards,
> >
> > Loïc Blot,
> > UNIX Systems, Network and Security Engineer
> > http://www.unix-experience.fr
> >
> > 15 décembre 2014 15:18 "Rick Macklem" <rmacklem at uoguelph.ca> a écrit:
> > > Loic Blot wrote:
> > >
> > >> For more informations, here is procstat -kk on nfsd, if you need
> > >> more
> > >> hot datas, tell me.
> > >>
> > >> Regards, PID TID COMM TDNAME KSTACK
> > >> 918 100529 nfsd nfsd: master mi_switch+0xe1
> > >> sleepq_wait+0x3a sleeplk+0x15d __lockmgr_args+0x902
> > >> vop_stdlock+0x3c VOP_LOCK1_APV+0xab _vn_lock+0x43 zfs_fhtovp+0x38d
> > >> nfsvno_fhtovp+0x7c nfsd_fhtovp+0xc8 nfsrvd_dorpc+0x917
> > >> nfssvc_program+0x554 svc_run_internal+0xc77 svc_run+0x1de
> > >> nfsrvd_nfsd+0x1ca nfssvc_nfsd+0x107 sys_nfssvc+0x9c
> > >> amd64_syscall+0x351
> > >
> > > Well, most of the threads are stuck like this one, waiting for a
> > > vnode
> > > lock in ZFS. All of them appear to be in zfs_fhtovp().
> > > I`m not a ZFS guy, so I can`t help much. I`ll try changing the
> > > subject line
> > > to include ZFS vnode lock, so maybe the ZFS guys will take a look.
> > >
> > > The only thing I`ve seen suggested is trying:
> > > sysctl vfs.lookup_shared=0
> > > to disable shared vop_lookup()s. Apparently zfs_lookup() doesn`t
> > > obey the vnode locking rules for lookup and rename, according to
> > > the posting I saw.
> > >
> > > I`ve added a couple of comments about the other threads below, but
> > > they are all either waiting for an RPC request or waiting for the
> > > threads stuck on the ZFS vnode lock to complete.
> > >
> > > rick
> > >
> > >> 918 100564 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > >> svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > >> fork_trampoline+0xe
> > >
> > > Fyi, this thread is just waiting for an RPC to arrive. (Normal)
> > >
> > >> 918 100565 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > >> svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > >> fork_trampoline+0xe
> > >> 918 100566 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > >> svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > >> fork_trampoline+0xe
> > >> 918 100567 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > >> svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > >> fork_trampoline+0xe
> > >> 918 100568 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > >> svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > >> fork_trampoline+0xe
> > >> 918 100569 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > >> svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > >> fork_trampoline+0xe
> > >> 918 100570 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_catch_signals+0xab sleepq_wait_sig+0xf _cv_wait_sig+0x16a
> > >> svc_run_internal+0x87e svc_thread_start+0xb fork_exit+0x9a
> > >> fork_trampoline+0xe
> > >> 918 100571 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a _sleep+0x287 nfsmsleep+0x66 nfsv4_lock+0x9b
> > >> nfsrvd_dorpc+0x316 nfssvc_program+0x554 svc_run_internal+0xc77
> > >> svc_thread_start+0xb fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100572 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a _sleep+0x287 nfsmsleep+0x66 nfsv4_lock+0x9b
> > >> nfsrv_setclient+0xbd nfsrvd_setclientid+0x3c8 nfsrvd_dorpc+0xc76
> > >> nfssvc_program+0x554 svc_run_internal+0xc77 svc_thread_start+0xb
> > >> fork_exit+0x9a fork_trampoline+0xe
> > >
> > > This one (and a few others) are waiting for the nfsv4_lock. This
> > > happens
> > > because other threads are stuck with RPCs in progress. (ie. The
> > > ones
> > > waiting on the vnode lock in zfs_fhtovp().)
> > > For these, the RPC needs to lock out other threads to do the
> > > operation,
> > > so it waits for the nfsv4_lock() which can exclusively lock the
> > > NFSv4
> > > data structures once all other nfsd threads complete their RPCs in
> > > progress.
> > >
> > >> 918 100573 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a _sleep+0x287 nfsmsleep+0x66 nfsv4_lock+0x9b
> > >> nfsrvd_dorpc+0x316 nfssvc_program+0x554 svc_run_internal+0xc77
> > >> svc_thread_start+0xb fork_exit+0x9a fork_trampoline+0xe
> > >
> > > Same as above.
> > >
> > >> 918 100574 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a sleeplk+0x15d __lockmgr_args+0x902
> > >> vop_stdlock+0x3c VOP_LOCK1_APV+0xab _vn_lock+0x43 zfs_fhtovp+0x38d
> > >> nfsvno_fhtovp+0x7c nfsd_fhtovp+0xc8 nfsrvd_dorpc+0x917
> > >> nfssvc_program+0x554 svc_run_internal+0xc77 svc_thread_start+0xb
> > >> fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100575 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a sleeplk+0x15d __lockmgr_args+0x902
> > >> vop_stdlock+0x3c VOP_LOCK1_APV+0xab _vn_lock+0x43 zfs_fhtovp+0x38d
> > >> nfsvno_fhtovp+0x7c nfsd_fhtovp+0xc8 nfsrvd_dorpc+0x917
> > >> nfssvc_program+0x554 svc_run_internal+0xc77 svc_thread_start+0xb
> > >> fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100576 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a sleeplk+0x15d __lockmgr_args+0x902
> > >> vop_stdlock+0x3c VOP_LOCK1_APV+0xab _vn_lock+0x43 zfs_fhtovp+0x38d
> > >> nfsvno_fhtovp+0x7c nfsd_fhtovp+0xc8 nfsrvd_dorpc+0x917
> > >> nfssvc_program+0x554 svc_run_internal+0xc77 svc_thread_start+0xb
> > >> fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100577 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a sleeplk+0x15d __lockmgr_args+0x902
> > >> vop_stdlock+0x3c VOP_LOCK1_APV+0xab _vn_lock+0x43 zfs_fhtovp+0x38d
> > >> nfsvno_fhtovp+0x7c nfsd_fhtovp+0xc8 nfsrvd_dorpc+0x917
> > >> nfssvc_program+0x554 svc_run_internal+0xc77 svc_thread_start+0xb
> > >> fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100578 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a sleeplk+0x15d __lockmgr_args+0x902
> > >> vop_stdlock+0x3c VOP_LOCK1_APV+0xab _vn_lock+0x43 zfs_fhtovp+0x38d
> > >> nfsvno_fhtovp+0x7c nfsd_fhtovp+0xc8 nfsrvd_dorpc+0x917
> > >> nfssvc_program+0x554 svc_run_internal+0xc77 svc_thread_start+0xb
> > >> fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100579 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a sleeplk+0x15d __lockmgr_args+0x902
> > >> vop_stdlock+0x3c VOP_LOCK1_APV+0xab _vn_lock+0x43 zfs_fhtovp+0x38d
> > >> nfsvno_fhtovp+0x7c nfsd_fhtovp+0xc8 nfsrvd_dorpc+0x917
> > >> nfssvc_program+0x554 svc_run_internal+0xc77 svc_thread_start+0xb
> > >> fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100580 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a sleeplk+0x15d __lockmgr_args+0x902
> > >> vop_stdlock+0x3c VOP_LOCK1_APV+0xab _vn_lock+0x43 zfs_fhtovp+0x38d
> > >> nfsvno_fhtovp+0x7c nfsd_fhtovp+0xc8 nfsrvd_dorpc+0x917
> > >> nfssvc_program+0x554 svc_run_internal+0xc77 svc_thread_start+0xb
> > >> fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100581 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a sleeplk+0x15d __lockmgr_args+0x902
> > >> vop_stdlock+0x3c VOP_LOCK1_APV+0xab _vn_lock+0x43 zfs_fhtovp+0x38d
> > >> nfsvno_fhtovp+0x7c nfsd_fhtovp+0xc8 nfsrvd_dorpc+0x917
> > >> nfssvc_program+0x554 svc_run_internal+0xc77 svc_thread_start+0xb
> > >> fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100582 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a sleeplk+0x15d __lockmgr_args+0x902
> > >> vop_stdlock+0x3c VOP_LOCK1_APV+0xab _vn_lock+0x43 zfs_fhtovp+0x38d
> > >> nfsvno_fhtovp+0x7c nfsd_fhtovp+0xc8 nfsrvd_dorpc+0x917
> > >> nfssvc_program+0x554 svc_run_internal+0xc77 svc_thread_start+0xb
> > >> fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100583 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a sleeplk+0x15d __lockmgr_args+0x902
> > >> vop_stdlock+0x3c VOP_LOCK1_APV+0xab _vn_lock+0x43 zfs_fhtovp+0x38d
> > >> nfsvno_fhtovp+0x7c nfsd_fhtovp+0xc8 nfsrvd_dorpc+0x917
> > >> nfssvc_program+0x554 svc_run_internal+0xc77 svc_thread_start+0xb
> > >> fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100584 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a sleeplk+0x15d __lockmgr_args+0x902
> > >> vop_stdlock+0x3c VOP_LOCK1_APV+0xab _vn_lock+0x43 zfs_fhtovp+0x38d
> > >> nfsvno_fhtovp+0x7c nfsd_fhtovp+0xc8 nfsrvd_dorpc+0x917
> > >> nfssvc_program+0x554 svc_run_internal+0xc77 svc_thread_start+0xb
> > >> fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100585 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a sleeplk+0x15d __lockmgr_args+0x902
> > >> vop_stdlock+0x3c VOP_LOCK1_APV+0xab _vn_lock+0x43 zfs_fhtovp+0x38d
> > >> nfsvno_fhtovp+0x7c nfsd_fhtovp+0xc8 nfsrvd_dorpc+0x917
> > >> nfssvc_program+0x554 svc_run_internal+0xc77 svc_thread_start+0xb
> > >> fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100586 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a sleeplk+0x15d __lockmgr_args+0x902
> > >> vop_stdlock+0x3c VOP_LOCK1_APV+0xab _vn_lock+0x43 zfs_fhtovp+0x38d
> > >> nfsvno_fhtovp+0x7c nfsd_fhtovp+0xc8 nfsrvd_dorpc+0x917
> > >> nfssvc_program+0x554 svc_run_internal+0xc77 svc_thread_start+0xb
> > >> fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100587 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a sleeplk+0x15d __lockmgr_args+0x902
> > >> vop_stdlock+0x3c VOP_LOCK1_APV+0xab _vn_lock+0x43 zfs_fhtovp+0x38d
> > >> nfsvno_fhtovp+0x7c nfsd_fhtovp+0xc8 nfsrvd_dorpc+0x917
> > >> nfssvc_program+0x554 svc_run_internal+0xc77 svc_thread_start+0xb
> > >> fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100588 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a sleeplk+0x15d __lockmgr_args+0x902
> > >> vop_stdlock+0x3c VOP_LOCK1_APV+0xab _vn_lock+0x43 zfs_fhtovp+0x38d
> > >> nfsvno_fhtovp+0x7c nfsd_fhtovp+0xc8 nfsrvd_dorpc+0x917
> > >> nfssvc_program+0x554 svc_run_internal+0xc77 svc_thread_start+0xb
> > >> fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100589 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a sleeplk+0x15d __lockmgr_args+0x902
> > >> vop_stdlock+0x3c VOP_LOCK1_APV+0xab _vn_lock+0x43 zfs_fhtovp+0x38d
> > >> nfsvno_fhtovp+0x7c nfsd_fhtovp+0xc8 nfsrvd_dorpc+0x917
> > >> nfssvc_program+0x554 svc_run_internal+0xc77 svc_thread_start+0xb
> > >> fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100590 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a sleeplk+0x15d __lockmgr_args+0x902
> > >> vop_stdlock+0x3c VOP_LOCK1_APV+0xab _vn_lock+0x43 zfs_fhtovp+0x38d
> > >> nfsvno_fhtovp+0x7c nfsd_fhtovp+0xc8 nfsrvd_dorpc+0x917
> > >> nfssvc_program+0x554 svc_run_internal+0xc77 svc_thread_start+0xb
> > >> fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100591 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a sleeplk+0x15d __lockmgr_args+0x902
> > >> vop_stdlock+0x3c VOP_LOCK1_APV+0xab _vn_lock+0x43 zfs_fhtovp+0x38d
> > >> nfsvno_fhtovp+0x7c nfsd_fhtovp+0xc8 nfsrvd_dorpc+0x917
> > >> nfssvc_program+0x554 svc_run_internal+0xc77 svc_thread_start+0xb
> > >> fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100592 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a sleeplk+0x15d __lockmgr_args+0x902
> > >> vop_stdlock+0x3c VOP_LOCK1_APV+0xab _vn_lock+0x43 zfs_fhtovp+0x38d
> > >> nfsvno_fhtovp+0x7c nfsd_fhtovp+0xc8 nfsrvd_dorpc+0x917
> > >> nfssvc_program+0x554 svc_run_internal+0xc77 svc_thread_start+0xb
> > >> fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100593 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a sleeplk+0x15d __lockmgr_args+0x902
> > >> vop_stdlock+0x3c VOP_LOCK1_APV+0xab _vn_lock+0x43 zfs_fhtovp+0x38d
> > >> nfsvno_fhtovp+0x7c nfsd_fhtovp+0xc8 nfsrvd_dorpc+0x917
> > >> nfssvc_program+0x554 svc_run_internal+0xc77 svc_thread_start+0xb
> > >> fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100594 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a sleeplk+0x15d __lockmgr_args+0x902
> > >> vop_stdlock+0x3c VOP_LOCK1_APV+0xab _vn_lock+0x43 zfs_fhtovp+0x38d
> > >> nfsvno_fhtovp+0x7c nfsd_fhtovp+0xc8 nfsrvd_dorpc+0x917
> > >> nfssvc_program+0x554 svc_run_internal+0xc77 svc_thread_start+0xb
> > >> fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100595 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a sleeplk+0x15d __lockmgr_args+0x902
> > >> vop_stdlock+0x3c VOP_LOCK1_APV+0xab _vn_lock+0x43 zfs_fhtovp+0x38d
> > >> nfsvno_fhtovp+0x7c nfsd_fhtovp+0xc8 nfsrvd_dorpc+0x917
> > >> nfssvc_program+0x554 svc_run_internal+0xc77 svc_thread_start+0xb
> > >> fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100596 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a sleeplk+0x15d __lockmgr_args+0x902
> > >> vop_stdlock+0x3c VOP_LOCK1_APV+0xab _vn_lock+0x43 zfs_fhtovp+0x38d
> > >> nfsvno_fhtovp+0x7c nfsd_fhtovp+0xc8 nfsrvd_dorpc+0x917
> > >> nfssvc_program+0x554 svc_run_internal+0xc77 svc_thread_start+0xb
> > >> fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100597 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a sleeplk+0x15d __lockmgr_args+0x902
> > >> vop_stdlock+0x3c VOP_LOCK1_APV+0xab _vn_lock+0x43 zfs_fhtovp+0x38d
> > >> nfsvno_fhtovp+0x7c nfsd_fhtovp+0xc8 nfsrvd_dorpc+0x917
> > >> nfssvc_program+0x554 svc_run_internal+0xc77 svc_thread_start+0xb
> > >> fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100598 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a sleeplk+0x15d __lockmgr_args+0x902
> > >> vop_stdlock+0x3c VOP_LOCK1_APV+0xab _vn_lock+0x43 zfs_fhtovp+0x38d
> > >> nfsvno_fhtovp+0x7c nfsd_fhtovp+0xc8 nfsrvd_dorpc+0x917
> > >> nfssvc_program+0x554 svc_run_internal+0xc77 svc_thread_start+0xb
> > >> fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100599 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a sleeplk+0x15d __lockmgr_args+0x902
> > >> vop_stdlock+0x3c VOP_LOCK1_APV+0xab _vn_lock+0x43 zfs_fhtovp+0x38d
> > >> nfsvno_fhtovp+0x7c nfsd_fhtovp+0xc8 nfsrvd_dorpc+0x917
> > >> nfssvc_program+0x554 svc_run_internal+0xc77 svc_thread_start+0xb
> > >> fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100600 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a sleeplk+0x15d __lockmgr_args+0x902
> > >> vop_stdlock+0x3c VOP_LOCK1_APV+0xab _vn_lock+0x43 zfs_fhtovp+0x38d
> > >> nfsvno_fhtovp+0x7c nfsd_fhtovp+0xc8 nfsrvd_dorpc+0x917
> > >> nfssvc_program+0x554 svc_run_internal+0xc77 svc_thread_start+0xb
> > >> fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100601 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a sleeplk+0x15d __lockmgr_args+0x902
> > >> vop_stdlock+0x3c VOP_LOCK1_APV+0xab _vn_lock+0x43 zfs_fhtovp+0x38d
> > >> nfsvno_fhtovp+0x7c nfsd_fhtovp+0xc8 nfsrvd_dorpc+0x917
> > >> nfssvc_program+0x554 svc_run_internal+0xc77 svc_thread_start+0xb
> > >> fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100602 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a sleeplk+0x15d __lockmgr_args+0x902
> > >> vop_stdlock+0x3c VOP_LOCK1_APV+0xab _vn_lock+0x43 zfs_fhtovp+0x38d
> > >> nfsvno_fhtovp+0x7c nfsd_fhtovp+0xc8 nfsrvd_dorpc+0x917
> > >> nfssvc_program+0x554 svc_run_internal+0xc77 svc_thread_start+0xb
> > >> fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100603 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a sleeplk+0x15d __lockmgr_args+0x902
> > >> vop_stdlock+0x3c VOP_LOCK1_APV+0xab _vn_lock+0x43 zfs_fhtovp+0x38d
> > >> nfsvno_fhtovp+0x7c nfsd_fhtovp+0xc8 nfsrvd_dorpc+0x917
> > >> nfssvc_program+0x554 svc_run_internal+0xc77 svc_thread_start+0xb
> > >> fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100604 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a sleeplk+0x15d __lockmgr_args+0x902
> > >> vop_stdlock+0x3c VOP_LOCK1_APV+0xab _vn_lock+0x43 zfs_fhtovp+0x38d
> > >> nfsvno_fhtovp+0x7c nfsd_fhtovp+0xc8 nfsrvd_dorpc+0x917
> > >> nfssvc_program+0x554 svc_run_internal+0xc77 svc_thread_start+0xb
> > >> fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100605 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a sleeplk+0x15d __lockmgr_args+0x902
> > >> vop_stdlock+0x3c VOP_LOCK1_APV+0xab _vn_lock+0x43 zfs_fhtovp+0x38d
> > >> nfsvno_fhtovp+0x7c nfsd_fhtovp+0xc8 nfsrvd_dorpc+0x917
> > >> nfssvc_program+0x554 svc_run_internal+0xc77 svc_thread_start+0xb
> > >> fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100606 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a sleeplk+0x15d __lockmgr_args+0x902
> > >> vop_stdlock+0x3c VOP_LOCK1_APV+0xab _vn_lock+0x43 zfs_fhtovp+0x38d
> > >> nfsvno_fhtovp+0x7c nfsd_fhtovp+0xc8 nfsrvd_dorpc+0x917
> > >> nfssvc_program+0x554 svc_run_internal+0xc77 svc_thread_start+0xb
> > >> fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100607 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a sleeplk+0x15d __lockmgr_args+0x902
> > >> vop_stdlock+0x3c VOP_LOCK1_APV+0xab _vn_lock+0x43 zfs_fhtovp+0x38d
> > >> nfsvno_fhtovp+0x7c nfsd_fhtovp+0xc8 nfsrvd_dorpc+0x917
> > >> nfssvc_program+0x554 svc_run_internal+0xc77 svc_thread_start+0xb
> > >> fork_exit+0x9a fork_trampoline+0xe
> > >
> > > Lots more waiting for the ZFS vnode lock in zfs_fhtovp().
> > >
> > >> 918 100608 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a _sleep+0x287 nfsmsleep+0x66 nfsv4_lock+0x9b
> > >> nfsrv_getlockfile+0x179 nfsrv_lockctrl+0x21f nfsrvd_lock+0x5b1
> > >> nfsrvd_dorpc+0xec6 nfssvc_program+0x554 svc_run_internal+0xc77
> > >> svc_thread_start+0xb fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100609 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a sleeplk+0x15d __lockmgr_args+0x902
> > >> vop_stdlock+0x3c VOP_LOCK1_APV+0xab _vn_lock+0x43 zfs_fhtovp+0x38d
> > >> nfsvno_fhtovp+0x7c nfsd_fhtovp+0xc8 nfsrvd_dorpc+0x917
> > >> nfssvc_program+0x554 svc_run_internal+0xc77 svc_thread_start+0xb
> > >> fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100610 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a sleeplk+0x15d __lockmgr_args+0xc9e
> > >> vop_stdlock+0x3c VOP_LOCK1_APV+0xab _vn_lock+0x43
> > >> nfsvno_advlock+0x119 nfsrv_dolocal+0x84 nfsrv_lockctrl+0x14ad
> > >> nfsrvd_locku+0x283 nfsrvd_dorpc+0xec6 nfssvc_program+0x554
> > >> svc_run_internal+0xc77 svc_thread_start+0xb fork_exit+0x9a
> > >> fork_trampoline+0xe
> > >> 918 100611 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a _sleep+0x287 nfsmsleep+0x66 nfsv4_lock+0x9b
> > >> nfsrvd_dorpc+0x316 nfssvc_program+0x554 svc_run_internal+0xc77
> > >> svc_thread_start+0xb fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100612 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a _sleep+0x287 nfsmsleep+0x66 nfsv4_lock+0x9b
> > >> nfsrvd_dorpc+0x316 nfssvc_program+0x554 svc_run_internal+0xc77
> > >> svc_thread_start+0xb fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100613 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a _sleep+0x287 nfsmsleep+0x66 nfsv4_lock+0x9b
> > >> nfsrvd_dorpc+0x316 nfssvc_program+0x554 svc_run_internal+0xc77
> > >> svc_thread_start+0xb fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100614 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a _sleep+0x287 nfsmsleep+0x66 nfsv4_lock+0x9b
> > >> nfsrvd_dorpc+0x316 nfssvc_program+0x554 svc_run_internal+0xc77
> > >> svc_thread_start+0xb fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100615 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a _sleep+0x287 nfsmsleep+0x66 nfsv4_lock+0x9b
> > >> nfsrvd_dorpc+0x316 nfssvc_program+0x554 svc_run_internal+0xc77
> > >> svc_thread_start+0xb fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100616 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a _sleep+0x287 nfsmsleep+0x66 nfsv4_lock+0x9b
> > >> nfsrvd_dorpc+0x316 nfssvc_program+0x554 svc_run_internal+0xc77
> > >> svc_thread_start+0xb fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100617 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a _sleep+0x287 nfsmsleep+0x66 nfsv4_lock+0x9b
> > >> nfsrvd_dorpc+0x316 nfssvc_program+0x554 svc_run_internal+0xc77
> > >> svc_thread_start+0xb fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100618 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a _sleep+0x287 nfsmsleep+0x66 nfsv4_lock+0x9b
> > >> nfsrvd_dorpc+0x316 nfssvc_program+0x554 svc_run_internal+0xc77
> > >> svc_thread_start+0xb fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100619 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a sleeplk+0x15d __lockmgr_args+0x902
> > >> vop_stdlock+0x3c VOP_LOCK1_APV+0xab _vn_lock+0x43 zfs_fhtovp+0x38d
> > >> nfsvno_fhtovp+0x7c nfsd_fhtovp+0xc8 nfsrvd_dorpc+0x917
> > >> nfssvc_program+0x554 svc_run_internal+0xc77 svc_thread_start+0xb
> > >> fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100620 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a sleeplk+0x15d __lockmgr_args+0x902
> > >> vop_stdlock+0x3c VOP_LOCK1_APV+0xab _vn_lock+0x43 zfs_fhtovp+0x38d
> > >> nfsvno_fhtovp+0x7c nfsd_fhtovp+0xc8 nfsrvd_dorpc+0x917
> > >> nfssvc_program+0x554 svc_run_internal+0xc77 svc_thread_start+0xb
> > >> fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100621 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a _sleep+0x287 nfsmsleep+0x66 nfsv4_lock+0x9b
> > >> nfsrvd_dorpc+0x316 nfssvc_program+0x554 svc_run_internal+0xc77
> > >> svc_thread_start+0xb fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100622 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a sleeplk+0x15d __lockmgr_args+0x902
> > >> vop_stdlock+0x3c VOP_LOCK1_APV+0xab _vn_lock+0x43 zfs_fhtovp+0x38d
> > >> nfsvno_fhtovp+0x7c nfsd_fhtovp+0xc8 nfsrvd_dorpc+0x917
> > >> nfssvc_program+0x554 svc_run_internal+0xc77 svc_thread_start+0xb
> > >> fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100623 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a _sleep+0x287 nfsmsleep+0x66 nfsv4_lock+0x9b
> > >> nfsrvd_dorpc+0x316 nfssvc_program+0x554 svc_run_internal+0xc77
> > >> svc_thread_start+0xb fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100624 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a sleeplk+0x15d __lockmgr_args+0x902
> > >> vop_stdlock+0x3c VOP_LOCK1_APV+0xab _vn_lock+0x43 zfs_fhtovp+0x38d
> > >> nfsvno_fhtovp+0x7c nfsd_fhtovp+0xc8 nfsrvd_dorpc+0x917
> > >> nfssvc_program+0x554 svc_run_internal+0xc77 svc_thread_start+0xb
> > >> fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100625 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a sleeplk+0x15d __lockmgr_args+0x902
> > >> vop_stdlock+0x3c VOP_LOCK1_APV+0xab _vn_lock+0x43 zfs_fhtovp+0x38d
> > >> nfsvno_fhtovp+0x7c nfsd_fhtovp+0xc8 nfsrvd_dorpc+0x917
> > >> nfssvc_program+0x554 svc_run_internal+0xc77 svc_thread_start+0xb
> > >> fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100626 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a sleeplk+0x15d __lockmgr_args+0x902
> > >> vop_stdlock+0x3c VOP_LOCK1_APV+0xab _vn_lock+0x43 zfs_fhtovp+0x38d
> > >> nfsvno_fhtovp+0x7c nfsd_fhtovp+0xc8 nfsrvd_dorpc+0x917
> > >> nfssvc_program+0x554 svc_run_internal+0xc77 svc_thread_start+0xb
> > >> fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100627 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a sleeplk+0x15d __lockmgr_args+0x902
> > >> vop_stdlock+0x3c VOP_LOCK1_APV+0xab _vn_lock+0x43 zfs_fhtovp+0x38d
> > >> nfsvno_fhtovp+0x7c nfsd_fhtovp+0xc8 nfsrvd_dorpc+0x917
> > >> nfssvc_program+0x554 svc_run_internal+0xc77 svc_thread_start+0xb
> > >> fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100628 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a sleeplk+0x15d __lockmgr_args+0x902
> > >> vop_stdlock+0x3c VOP_LOCK1_APV+0xab _vn_lock+0x43 zfs_fhtovp+0x38d
> > >> nfsvno_fhtovp+0x7c nfsd_fhtovp+0xc8 nfsrvd_dorpc+0x917
> > >> nfssvc_program+0x554 svc_run_internal+0xc77 svc_thread_start+0xb
> > >> fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100629 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a sleeplk+0x15d __lockmgr_args+0x902
> > >> vop_stdlock+0x3c VOP_LOCK1_APV+0xab _vn_lock+0x43 zfs_fhtovp+0x38d
> > >> nfsvno_fhtovp+0x7c nfsd_fhtovp+0xc8 nfsrvd_dorpc+0x917
> > >> nfssvc_program+0x554 svc_run_internal+0xc77 svc_thread_start+0xb
> > >> fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100630 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a sleeplk+0x15d __lockmgr_args+0x902
> > >> vop_stdlock+0x3c VOP_LOCK1_APV+0xab _vn_lock+0x43 zfs_fhtovp+0x38d
> > >> nfsvno_fhtovp+0x7c nfsd_fhtovp+0xc8 nfsrvd_dorpc+0x917
> > >> nfssvc_program+0x554 svc_run_internal+0xc77 svc_thread_start+0xb
> > >> fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100631 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a sleeplk+0x15d __lockmgr_args+0x902
> > >> vop_stdlock+0x3c VOP_LOCK1_APV+0xab _vn_lock+0x43 zfs_fhtovp+0x38d
> > >> nfsvno_fhtovp+0x7c nfsd_fhtovp+0xc8 nfsrvd_dorpc+0x917
> > >> nfssvc_program+0x554 svc_run_internal+0xc77 svc_thread_start+0xb
> > >> fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100632 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a sleeplk+0x15d __lockmgr_args+0x902
> > >> vop_stdlock+0x3c VOP_LOCK1_APV+0xab _vn_lock+0x43 zfs_fhtovp+0x38d
> > >> nfsvno_fhtovp+0x7c nfsd_fhtovp+0xc8 nfsrvd_dorpc+0x917
> > >> nfssvc_program+0x554 svc_run_internal+0xc77 svc_thread_start+0xb
> > >> fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100633 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a sleeplk+0x15d __lockmgr_args+0x902
> > >> vop_stdlock+0x3c VOP_LOCK1_APV+0xab _vn_lock+0x43 zfs_fhtovp+0x38d
> > >> nfsvno_fhtovp+0x7c nfsd_fhtovp+0xc8 nfsrvd_dorpc+0x917
> > >> nfssvc_program+0x554 svc_run_internal+0xc77 svc_thread_start+0xb
> > >> fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100634 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a sleeplk+0x15d __lockmgr_args+0x902
> > >> vop_stdlock+0x3c VOP_LOCK1_APV+0xab _vn_lock+0x43 zfs_fhtovp+0x38d
> > >> nfsvno_fhtovp+0x7c nfsd_fhtovp+0xc8 nfsrvd_dorpc+0x917
> > >> nfssvc_program+0x554 svc_run_internal+0xc77 svc_thread_start+0xb
> > >> fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100635 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a sleeplk+0x15d __lockmgr_args+0x902
> > >> vop_stdlock+0x3c VOP_LOCK1_APV+0xab _vn_lock+0x43 zfs_fhtovp+0x38d
> > >> nfsvno_fhtovp+0x7c nfsd_fhtovp+0xc8 nfsrvd_dorpc+0x917
> > >> nfssvc_program+0x554 svc_run_internal+0xc77 svc_thread_start+0xb
> > >> fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100636 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a sleeplk+0x15d __lockmgr_args+0x902
> > >> vop_stdlock+0x3c VOP_LOCK1_APV+0xab _vn_lock+0x43 zfs_fhtovp+0x38d
> > >> nfsvno_fhtovp+0x7c nfsd_fhtovp+0xc8 nfsrvd_dorpc+0x917
> > >> nfssvc_program+0x554 svc_run_internal+0xc77 svc_thread_start+0xb
> > >> fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100637 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a sleeplk+0x15d __lockmgr_args+0x902
> > >> vop_stdlock+0x3c VOP_LOCK1_APV+0xab _vn_lock+0x43 zfs_fhtovp+0x38d
> > >> nfsvno_fhtovp+0x7c nfsd_fhtovp+0xc8 nfsrvd_dorpc+0x917
> > >> nfssvc_program+0x554 svc_run_internal+0xc77 svc_thread_start+0xb
> > >> fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100638 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a sleeplk+0x15d __lockmgr_args+0x902
> > >> vop_stdlock+0x3c VOP_LOCK1_APV+0xab _vn_lock+0x43 zfs_fhtovp+0x38d
> > >> nfsvno_fhtovp+0x7c nfsd_fhtovp+0xc8 nfsrvd_dorpc+0x917
> > >> nfssvc_program+0x554 svc_run_internal+0xc77 svc_thread_start+0xb
> > >> fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100639 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a sleeplk+0x15d __lockmgr_args+0x902
> > >> vop_stdlock+0x3c VOP_LOCK1_APV+0xab _vn_lock+0x43 zfs_fhtovp+0x38d
> > >> nfsvno_fhtovp+0x7c nfsd_fhtovp+0xc8 nfsrvd_dorpc+0x917
> > >> nfssvc_program+0x554 svc_run_internal+0xc77 svc_thread_start+0xb
> > >> fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100640 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a sleeplk+0x15d __lockmgr_args+0x902
> > >> vop_stdlock+0x3c VOP_LOCK1_APV+0xab _vn_lock+0x43 zfs_fhtovp+0x38d
> > >> nfsvno_fhtovp+0x7c nfsd_fhtovp+0xc8 nfsrvd_dorpc+0x917
> > >> nfssvc_program+0x554 svc_run_internal+0xc77 svc_thread_start+0xb
> > >> fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100641 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a sleeplk+0x15d __lockmgr_args+0x902
> > >> vop_stdlock+0x3c VOP_LOCK1_APV+0xab _vn_lock+0x43 zfs_fhtovp+0x38d
> > >> nfsvno_fhtovp+0x7c nfsd_fhtovp+0xc8 nfsrvd_dorpc+0x917
> > >> nfssvc_program+0x554 svc_run_internal+0xc77 svc_thread_start+0xb
> > >> fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100642 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a sleeplk+0x15d __lockmgr_args+0x902
> > >> vop_stdlock+0x3c VOP_LOCK1_APV+0xab _vn_lock+0x43 zfs_fhtovp+0x38d
> > >> nfsvno_fhtovp+0x7c nfsd_fhtovp+0xc8 nfsrvd_dorpc+0x917
> > >> nfssvc_program+0x554 svc_run_internal+0xc77 svc_thread_start+0xb
> > >> fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100643 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a sleeplk+0x15d __lockmgr_args+0x902
> > >> vop_stdlock+0x3c VOP_LOCK1_APV+0xab _vn_lock+0x43 zfs_fhtovp+0x38d
> > >> nfsvno_fhtovp+0x7c nfsd_fhtovp+0xc8 nfsrvd_dorpc+0x917
> > >> nfssvc_program+0x554 svc_run_internal+0xc77 svc_thread_start+0xb
> > >> fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100644 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a sleeplk+0x15d __lockmgr_args+0x902
> > >> vop_stdlock+0x3c VOP_LOCK1_APV+0xab _vn_lock+0x43 zfs_fhtovp+0x38d
> > >> nfsvno_fhtovp+0x7c nfsd_fhtovp+0xc8 nfsrvd_dorpc+0x917
> > >> nfssvc_program+0x554 svc_run_internal+0xc77 svc_thread_start+0xb
> > >> fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100645 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a sleeplk+0x15d __lockmgr_args+0x902
> > >> vop_stdlock+0x3c VOP_LOCK1_APV+0xab _vn_lock+0x43 zfs_fhtovp+0x38d
> > >> nfsvno_fhtovp+0x7c nfsd_fhtovp+0xc8 nfsrvd_dorpc+0x917
> > >> nfssvc_program+0x554 svc_run_internal+0xc77 svc_thread_start+0xb
> > >> fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100646 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a sleeplk+0x15d __lockmgr_args+0x902
> > >> vop_stdlock+0x3c VOP_LOCK1_APV+0xab _vn_lock+0x43 zfs_fhtovp+0x38d
> > >> nfsvno_fhtovp+0x7c nfsd_fhtovp+0xc8 nfsrvd_dorpc+0x917
> > >> nfssvc_program+0x554 svc_run_internal+0xc77 svc_thread_start+0xb
> > >> fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100647 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a sleeplk+0x15d __lockmgr_args+0x902
> > >> vop_stdlock+0x3c VOP_LOCK1_APV+0xab _vn_lock+0x43 zfs_fhtovp+0x38d
> > >> nfsvno_fhtovp+0x7c nfsd_fhtovp+0xc8 nfsrvd_dorpc+0x917
> > >> nfssvc_program+0x554 svc_run_internal+0xc77 svc_thread_start+0xb
> > >> fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100648 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a sleeplk+0x15d __lockmgr_args+0x902
> > >> vop_stdlock+0x3c VOP_LOCK1_APV+0xab _vn_lock+0x43 zfs_fhtovp+0x38d
> > >> nfsvno_fhtovp+0x7c nfsd_fhtovp+0xc8 nfsrvd_dorpc+0x917
> > >> nfssvc_program+0x554 svc_run_internal+0xc77 svc_thread_start+0xb
> > >> fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100649 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a sleeplk+0x15d __lockmgr_args+0x902
> > >> vop_stdlock+0x3c VOP_LOCK1_APV+0xab _vn_lock+0x43 zfs_fhtovp+0x38d
> > >> nfsvno_fhtovp+0x7c nfsd_fhtovp+0xc8 nfsrvd_dorpc+0x917
> > >> nfssvc_program+0x554 svc_run_internal+0xc77 svc_thread_start+0xb
> > >> fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100650 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a sleeplk+0x15d __lockmgr_args+0x902
> > >> vop_stdlock+0x3c VOP_LOCK1_APV+0xab _vn_lock+0x43 zfs_fhtovp+0x38d
> > >> nfsvno_fhtovp+0x7c nfsd_fhtovp+0xc8 nfsrvd_dorpc+0x917
> > >> nfssvc_program+0x554 svc_run_internal+0xc77 svc_thread_start+0xb
> > >> fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100651 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a sleeplk+0x15d __lockmgr_args+0x902
> > >> vop_stdlock+0x3c VOP_LOCK1_APV+0xab _vn_lock+0x43 zfs_fhtovp+0x38d
> > >> nfsvno_fhtovp+0x7c nfsd_fhtovp+0xc8 nfsrvd_dorpc+0x917
> > >> nfssvc_program+0x554 svc_run_internal+0xc77 svc_thread_start+0xb
> > >> fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100652 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a sleeplk+0x15d __lockmgr_args+0x902
> > >> vop_stdlock+0x3c VOP_LOCK1_APV+0xab _vn_lock+0x43 zfs_fhtovp+0x38d
> > >> nfsvno_fhtovp+0x7c nfsd_fhtovp+0xc8 nfsrvd_dorpc+0x917
> > >> nfssvc_program+0x554 svc_run_internal+0xc77 svc_thread_start+0xb
> > >> fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100653 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a sleeplk+0x15d __lockmgr_args+0x902
> > >> vop_stdlock+0x3c VOP_LOCK1_APV+0xab _vn_lock+0x43 zfs_fhtovp+0x38d
> > >> nfsvno_fhtovp+0x7c nfsd_fhtovp+0xc8 nfsrvd_dorpc+0x917
> > >> nfssvc_program+0x554 svc_run_internal+0xc77 svc_thread_start+0xb
> > >> fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100654 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a sleeplk+0x15d __lockmgr_args+0x902
> > >> vop_stdlock+0x3c VOP_LOCK1_APV+0xab _vn_lock+0x43 zfs_fhtovp+0x38d
> > >> nfsvno_fhtovp+0x7c nfsd_fhtovp+0xc8 nfsrvd_dorpc+0x917
> > >> nfssvc_program+0x554 svc_run_internal+0xc77 svc_thread_start+0xb
> > >> fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100655 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a sleeplk+0x15d __lockmgr_args+0x902
> > >> vop_stdlock+0x3c VOP_LOCK1_APV+0xab _vn_lock+0x43 zfs_fhtovp+0x38d
> > >> nfsvno_fhtovp+0x7c nfsd_fhtovp+0xc8 nfsrvd_dorpc+0x917
> > >> nfssvc_program+0x554 svc_run_internal+0xc77 svc_thread_start+0xb
> > >> fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100656 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a sleeplk+0x15d __lockmgr_args+0x902
> > >> vop_stdlock+0x3c VOP_LOCK1_APV+0xab _vn_lock+0x43 zfs_fhtovp+0x38d
> > >> nfsvno_fhtovp+0x7c nfsd_fhtovp+0xc8 nfsrvd_dorpc+0x917
> > >> nfssvc_program+0x554 svc_run_internal+0xc77 svc_thread_start+0xb
> > >> fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100657 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a sleeplk+0x15d __lockmgr_args+0x902
> > >> vop_stdlock+0x3c VOP_LOCK1_APV+0xab _vn_lock+0x43 zfs_fhtovp+0x38d
> > >> nfsvno_fhtovp+0x7c nfsd_fhtovp+0xc8 nfsrvd_dorpc+0x917
> > >> nfssvc_program+0x554 svc_run_internal+0xc77 svc_thread_start+0xb
> > >> fork_exit+0x9a fork_trampoline+0xe
> > >> 918 100658 nfsd nfsd: service mi_switch+0xe1
> > >> sleepq_wait+0x3a sleeplk+0x15d __lockmgr_args+0x902
> > >> vop_stdlock+0x3c VOP_LOCK1_APV+0xab _vn_lock+0x43 zfs_fhtovp+0x38d
> > >> nfsvno_fhtovp+0x7c nfsd_fhtovp+0xc8 nfsrvd_dorpc+0x917
> > >> nfssvc_program+0x554 svc_run_internal+0xc77 svc_thread_start+0xb
> > >> fork_exit+0x9a fork_trampoline+0xe
> > >>
> > >> Loïc Blot,
> > >> UNIX Systems, Network and Security Engineer
> > >> http://www.unix-experience.fr
> > >>
> > >> 15 décembre 2014 13:29 "Loïc Blot" <loic.blot at unix-experience.fr>
> > >> a
> > >> écrit:
> > >>> Hmmm...
> > >>> now i'm experiencing a deadlock.
> > >>>
> > >>> 0 918 915 0 21 0 12352 3372 zfs D - 1:48.64 nfsd: server (nfsd)
> > >>>
> > >>> the only issue was to reboot the server, but after rebooting
> > >>> deadlock arrives a second time when i
> > >>> start my jails over NFS.
> > >>>
> > >>> Regards,
> > >>>
> > >>> Loïc Blot,
> > >>> UNIX Systems, Network and Security Engineer
> > >>> http://www.unix-experience.fr
> > >>>
> > >>> 15 décembre 2014 10:07 "Loïc Blot" <loic.blot at unix-experience.fr>
> > >>> a
> > >>> écrit:
> > >>>
> > >>> Hi Rick,
> > >>> after talking with my N+1, NFSv4 is required on our
> > >>> infrastructure.
> > >>> I tried to upgrade NFSv4+ZFS
> > >>> server from 9.3 to 10.1, i hope this will resolve some issues...
> > >>>
> > >>> Regards,
> > >>>
> > >>> Loïc Blot,
> > >>> UNIX Systems, Network and Security Engineer
> > >>> http://www.unix-experience.fr
> > >>>
> > >>> 10 décembre 2014 15:36 "Loïc Blot" <loic.blot at unix-experience.fr>
> > >>> a
> > >>> écrit:
> > >>>
> > >>> Hi Rick,
> > >>> thanks for your suggestion.
> > >>> For my locking bug, rpc.lockd is stucked in rpcrecv state on the
> > >>> server. kill -9 doesn't affect the
> > >>> process, it's blocked.... (State: Ds)
> > >>>
> > >>> for the performances
> > >>>
> > >>> NFSv3: 60Mbps
> > >>> NFSv4: 45Mbps
> > >>> Regards,
> > >>>
> > >>> Loïc Blot,
> > >>> UNIX Systems, Network and Security Engineer
> > >>> http://www.unix-experience.fr
> > >>>
> > >>> 10 décembre 2014 13:56 "Rick Macklem" <rmacklem at uoguelph.ca> a
> > >>> écrit:
> > >>>
> > >>>> Loic Blot wrote:
> > >>>>
> > >>>>> Hi Rick,
> > >>>>> I'm trying NFSv3.
> > >>>>> Some jails are starting very well but now i have an issue with
> > >>>>> lockd
> > >>>>> after some minutes:
> > >>>>>
> > >>>>> nfs server 10.10.X.8:/jails: lockd not responding
> > >>>>> nfs server 10.10.X.8:/jails lockd is alive again
> > >>>>>
> > >>>>> I look at mbuf, but i seems there is no problem.
> > >>>>
> > >>>> Well, if you need locks to be visible across multiple clients,
> > >>>> then
> > >>>> I'm afraid you are stuck with using NFSv4 and the performance
> > >>>> you
> > >>>> get
> > >>>> from it. (There is no way to do file handle affinity for NFSv4
> > >>>> because
> > >>>> the read and write ops are buried in the compound RPC and not
> > >>>> easily
> > >>>> recognized.)
> > >>>>
> > >>>> If the locks don't need to be visible across multiple clients,
> > >>>> I'd
> > >>>> suggest trying the "nolockd" option with nfsv3.
> > >>>>
> > >>>>> Here is my rc.conf on server:
> > >>>>>
> > >>>>> nfs_server_enable="YES"
> > >>>>> nfsv4_server_enable="YES"
> > >>>>> nfsuserd_enable="YES"
> > >>>>> nfsd_server_flags="-u -t -n 256"
> > >>>>> mountd_enable="YES"
> > >>>>> mountd_flags="-r"
> > >>>>> nfsuserd_flags="-usertimeout 0 -force 20"
> > >>>>> rpcbind_enable="YES"
> > >>>>> rpc_lockd_enable="YES"
> > >>>>> rpc_statd_enable="YES"
> > >>>>>
> > >>>>> Here is the client:
> > >>>>>
> > >>>>> nfsuserd_enable="YES"
> > >>>>> nfsuserd_flags="-usertimeout 0 -force 20"
> > >>>>> nfscbd_enable="YES"
> > >>>>> rpc_lockd_enable="YES"
> > >>>>> rpc_statd_enable="YES"
> > >>>>>
> > >>>>> Have you got an idea ?
> > >>>>>
> > >>>>> Regards,
> > >>>>>
> > >>>>> Loïc Blot,
> > >>>>> UNIX Systems, Network and Security Engineer
> > >>>>> http://www.unix-experience.fr
> > >>>>>
> > >>>>> 9 décembre 2014 04:31 "Rick Macklem" <rmacklem at uoguelph.ca> a
> > >>>>> écrit:
> > >>>>>> Loic Blot wrote:
> > >>>>>>
> > >>>>>>> Hi rick,
> > >>>>>>>
> > >>>>>>> I waited 3 hours (no lag at jail launch) and now I do: sysrc
> > >>>>>>> memcached_flags="-v -m 512"
> > >>>>>>> Command was very very slow...
> > >>>>>>>
> > >>>>>>> Here is a dd over NFS:
> > >>>>>>>
> > >>>>>>> 601062912 bytes transferred in 21.060679 secs (28539579
> > >>>>>>> bytes/sec)
> > >>>>>>
> > >>>>>> Can you try the same read using an NFSv3 mount?
> > >>>>>> (If it runs much faster, you have probably been bitten by the
> > >>>>>> ZFS
> > >>>>>> "sequential vs random" read heuristic which I've been told
> > >>>>>> things
> > >>>>>> NFS is doing "random" reads without file handle affinity. File
> > >>>>>> handle affinity is very hard to do for NFSv4, so it isn't
> > >>>>>> done.)
> > >>>>
> > >>>> I was actually suggesting that you try the "dd" over nfsv3 to
> > >>>> see
> > >>>> how
> > >>>> the performance compared with nfsv4. If you do that, please post
> > >>>> the
> > >>>> comparable results.
> > >>>>
> > >>>> Someday I would like to try and get ZFS's sequential vs random
> > >>>> read
> > >>>> heuristic modified and any info on what difference in
> > >>>> performance
> > >>>> that
> > >>>> might make for NFS would be useful.
> > >>>>
> > >>>> rick
> > >>>>
> > >>>>>> rick
> > >>>>>>
> > >>>>>>> This is quite slow...
> > >>>>>>>
> > >>>>>>> You can found some nfsstat below (command isn't finished yet)
> > >>>>>>>
> > >>>>>>> nfsstat -c -w 1
> > >>>>>>>
> > >>>>>>> GtAttr Lookup Rdlink Read Write Rename Access Rddir
> > >>>>>>> 0 0 0 0 0 0 0 0
> > >>>>>>> 4 0 0 0 0 0 16 0
> > >>>>>>> 2 0 0 0 0 0 17 0
> > >>>>>>> 0 0 0 0 0 0 0 0
> > >>>>>>> 0 0 0 0 0 0 0 0
> > >>>>>>> 0 0 0 0 0 0 0 0
> > >>>>>>> 0 0 0 0 0 0 0 0
> > >>>>>>> 0 4 0 0 0 0 4 0
> > >>>>>>> 0 0 0 0 0 0 0 0
> > >>>>>>> 0 0 0 0 0 0 0 0
> > >>>>>>> 0 0 0 0 0 0 0 0
> > >>>>>>> 0 0 0 0 0 0 0 0
> > >>>>>>> 4 0 0 0 0 0 3 0
> > >>>>>>> 0 0 0 0 0 0 3 0
> > >>>>>>> 37 10 0 8 0 0 14 1
> > >>>>>>> 18 16 0 4 1 2 4 0
> > >>>>>>> 78 91 0 82 6 12 30 0
> > >>>>>>> 19 18 0 2 2 4 2 0
> > >>>>>>> 0 0 0 0 2 0 0 0
> > >>>>>>> 0 0 0 0 0 0 0 0
> > >>>>>>> GtAttr Lookup Rdlink Read Write Rename Access Rddir
> > >>>>>>> 0 0 0 0 0 0 0 0
> > >>>>>>> 0 0 0 0 0 0 0 0
> > >>>>>>> 0 0 0 0 0 0 0 0
> > >>>>>>> 0 1 0 0 0 0 1 0
> > >>>>>>> 4 6 0 0 6 0 3 0
> > >>>>>>> 2 0 0 0 0 0 0 0
> > >>>>>>> 0 0 0 0 0 0 0 0
> > >>>>>>> 1 0 0 0 0 0 0 0
> > >>>>>>> 0 0 0 0 1 0 0 0
> > >>>>>>> 0 0 0 0 0 0 0 0
> > >>>>>>> 0 0 0 0 0 0 0 0
> > >>>>>>> 0 0 0 0 0 0 0 0
> > >>>>>>> 0 0 0 0 0 0 0 0
> > >>>>>>> 0 0 0 0 0 0 0 0
> > >>>>>>> 0 0 0 0 0 0 0 0
> > >>>>>>> 0 0 0 0 0 0 0 0
> > >>>>>>> 0 0 0 0 0 0 0 0
> > >>>>>>> 6 108 0 0 0 0 0 0
> > >>>>>>> 0 0 0 0 0 0 0 0
> > >>>>>>> 0 0 0 0 0 0 0 0
> > >>>>>>> GtAttr Lookup Rdlink Read Write Rename Access Rddir
> > >>>>>>> 0 0 0 0 0 0 0 0
> > >>>>>>> 0 0 0 0 0 0 0 0
> > >>>>>>> 0 0 0 0 0 0 0 0
> > >>>>>>> 0 0 0 0 0 0 0 0
> > >>>>>>> 0 0 0 0 0 0 0 0
> > >>>>>>> 0 0 0 0 0 0 0 0
> > >>>>>>> 0 0 0 0 0 0 0 0
> > >>>>>>> 98 54 0 86 11 0 25 0
> > >>>>>>> 36 24 0 39 25 0 10 1
> > >>>>>>> 67 8 0 63 63 0 41 0
> > >>>>>>> 34 0 0 35 34 0 0 0
> > >>>>>>> 75 0 0 75 77 0 0 0
> > >>>>>>> 34 0 0 35 35 0 0 0
> > >>>>>>> 75 0 0 74 76 0 0 0
> > >>>>>>> 33 0 0 34 33 0 0 0
> > >>>>>>> 0 0 0 0 5 0 0 0
> > >>>>>>> 0 0 0 0 0 0 6 0
> > >>>>>>> 11 0 0 0 0 0 11 0
> > >>>>>>> 0 0 0 0 0 0 0 0
> > >>>>>>> 0 17 0 0 0 0 1 0
> > >>>>>>> GtAttr Lookup Rdlink Read Write Rename Access Rddir
> > >>>>>>> 4 5 0 0 0 0 12 0
> > >>>>>>> 2 0 0 0 0 0 26 0
> > >>>>>>> 0 0 0 0 0 0 0 0
> > >>>>>>> 0 0 0 0 0 0 0 0
> > >>>>>>> 0 0 0 0 0 0 0 0
> > >>>>>>> 0 0 0 0 0 0 0 0
> > >>>>>>> 0 0 0 0 0 0 0 0
> > >>>>>>> 0 4 0 0 0 0 4 0
> > >>>>>>> 0 0 0 0 0 0 0 0
> > >>>>>>> 0 0 0 0 0 0 0 0
> > >>>>>>> 0 0 0 0 0 0 0 0
> > >>>>>>> 4 0 0 0 0 0 2 0
> > >>>>>>> 2 0 0 0 0 0 24 0
> > >>>>>>> 0 0 0 0 0 0 0 0
> > >>>>>>> 0 0 0 0 0 0 0 0
> > >>>>>>> 0 0 0 0 0 0 0 0
> > >>>>>>> 0 0 0 0 0 0 0 0
> > >>>>>>> 0 0 0 0 0 0 0 0
> > >>>>>>> 0 0 0 0 0 0 0 0
> > >>>>>>> 0 0 0 0 0 0 0 0
> > >>>>>>> GtAttr Lookup Rdlink Read Write Rename Access Rddir
> > >>>>>>> 0 0 0 0 0 0 0 0
> > >>>>>>> 0 0 0 0 0 0 0 0
> > >>>>>>> 4 0 0 0 0 0 7 0
> > >>>>>>> 2 1 0 0 0 0 1 0
> > >>>>>>> 0 0 0 0 2 0 0 0
> > >>>>>>> 0 0 0 0 0 0 0 0
> > >>>>>>> 0 0 0 0 6 0 0 0
> > >>>>>>> 0 0 0 0 0 0 0 0
> > >>>>>>> 0 0 0 0 0 0 0 0
> > >>>>>>> 0 0 0 0 0 0 0 0
> > >>>>>>> 0 0 0 0 0 0 0 0
> > >>>>>>> 0 0 0 0 0 0 0 0
> > >>>>>>> 0 0 0 0 0 0 0 0
> > >>>>>>> 4 6 0 0 0 0 3 0
> > >>>>>>> 0 0 0 0 0 0 0 0
> > >>>>>>> 2 0 0 0 0 0 0 0
> > >>>>>>> 0 0 0 0 0 0 0 0
> > >>>>>>> 0 0 0 0 0 0 0 0
> > >>>>>>> 0 0 0 0 0 0 0 0
> > >>>>>>> 0 0 0 0 0 0 0 0
> > >>>>>>> GtAttr Lookup Rdlink Read Write Rename Access Rddir
> > >>>>>>> 0 0 0 0 0 0 0 0
> > >>>>>>> 0 0 0 0 0 0 0 0
> > >>>>>>> 0 0 0 0 0 0 0 0
> > >>>>>>> 0 0 0 0 0 0 0 0
> > >>>>>>> 0 0 0 0 0 0 0 0
> > >>>>>>> 4 71 0 0 0 0 0 0
> > >>>>>>> 0 1 0 0 0 0 0 0
> > >>>>>>> 2 36 0 0 0 0 1 0
> > >>>>>>> 0 0 0 0 0 0 0 0
> > >>>>>>> 0 0 0 0 0 0 0 0
> > >>>>>>> 0 0 0 0 0 0 0 0
> > >>>>>>> 0 0 0 0 0 0 0 0
> > >>>>>>> 1 0 0 0 0 0 1 0
> > >>>>>>> 0 0 0 0 0 0 0 0
> > >>>>>>> 0 0 0 0 0 0 0 0
> > >>>>>>> 79 6 0 79 79 0 2 0
> > >>>>>>> 25 0 0 25 26 0 6 0
> > >>>>>>> 43 18 0 39 46 0 23 0
> > >>>>>>> 36 0 0 36 36 0 31 0
> > >>>>>>> 68 1 0 66 68 0 0 0
> > >>>>>>> GtAttr Lookup Rdlink Read Write Rename Access Rddir
> > >>>>>>> 36 0 0 36 36 0 0 0
> > >>>>>>> 48 0 0 48 49 0 0 0
> > >>>>>>> 20 0 0 20 20 0 0 0
> > >>>>>>> 0 0 0 0 0 0 0 0
> > >>>>>>> 3 14 0 1 0 0 11 0
> > >>>>>>> 0 0 0 0 0 0 0 0
> > >>>>>>> 0 0 0 0 0 0 0 0
> > >>>>>>> 0 4 0 0 0 0 4 0
> > >>>>>>> 0 0 0 0 0 0 0 0
> > >>>>>>> 4 22 0 0 0 0 16 0
> > >>>>>>> 2 0 0 0 0 0 23 0
> > >>>>>>>
> > >>>>>>> Regards,
> > >>>>>>>
> > >>>>>>> Loïc Blot,
> > >>>>>>> UNIX Systems, Network and Security Engineer
> > >>>>>>> http://www.unix-experience.fr
> > >>>>>>>
> > >>>>>>> 8 décembre 2014 09:36 "Loïc Blot"
> > >>>>>>> <loic.blot at unix-experience.fr> a
> > >>>>>>> écrit:
> > >>>>>>>> Hi Rick,
> > >>>>>>>> I stopped the jails this week-end and started it this
> > >>>>>>>> morning,
> > >>>>>>>> i'll
> > >>>>>>>> give you some stats this week.
> > >>>>>>>>
> > >>>>>>>> Here is my nfsstat -m output (with your rsize/wsize tweaks)
> > >>>
> > >>>
> > >>
> > > nfsv4,tcp,resvport,hard,cto,sec=sys,acdirmin=3,acdirmax=60,acregmin=5,acregmax=60,nametimeo=60,negna
> > >>>
> > >>>>>>>>
> > >>>
> > >>>
> > >>
> > > etimeo=60,rsize=32768,wsize=32768,readdirsize=32768,readahead=1,wcommitsize=773136,timeout=120,retra
> > >>>
> > >>> s=2147483647
> > >>>
> > >>> On server side my disks are on a raid controller which show a
> > >>> 512b
> > >>> volume and write performances
> > >>> are very honest (dd if=/dev/zero of=/jails/test.dd bs=4096
> > >>> count=100000000 => 450MBps)
> > >>>
> > >>> Regards,
> > >>>
> > >>> Loïc Blot,
> > >>> UNIX Systems, Network and Security Engineer
> > >>> http://www.unix-experience.fr
> > >>>
> > >>> 5 décembre 2014 15:14 "Rick Macklem" <rmacklem at uoguelph.ca> a
> > >>> écrit:
> > >>>
> > >>>> Loic Blot wrote:
> > >>>>
> > >>>>> Hi,
> > >>>>> i'm trying to create a virtualisation environment based on
> > >>>>> jails.
> > >>>>> Those jails are stored under a big ZFS pool on a FreeBSD 9.3
> > >>>>> which
> > >>>>> export a NFSv4 volume. This NFSv4 volume was mounted on a big
> > >>>>> hypervisor (2 Xeon E5v3 + 128GB memory and 8 ports (but only 1
> > >>>>> was
> > >>>>> used at this time).
> > >>>>>
> > >>>>> The problem is simple, my hypervisors runs 6 jails (used 1% cpu
> > >>>>> and
> > >>>>> 10GB RAM approximatively and less than 1MB bandwidth) and works
> > >>>>> fine at start but the system slows down and after 2-3 days
> > >>>>> become
> > >>>>> unusable. When i look at top command i see 80-100% on system
> > >>>>> and
> > >>>>> commands are very very slow. Many process are tagged with
> > >>>>> nfs_cl*.
> > >>>>
> > >>>> To be honest, I would expect the slowness to be because of slow
> > >>>> response
> > >>>> from the NFSv4 server, but if you do:
> > >>>> # ps axHl
> > >>>> on a client when it is slow and post that, it would give us some
> > >>>> more
> > >>>> information on where the client side processes are sitting.
> > >>>> If you also do something like:
> > >>>> # nfsstat -c -w 1
> > >>>> and let it run for a while, that should show you how many RPCs
> > >>>> are
> > >>>> being done and which ones.
> > >>>>
> > >>>> # nfsstat -m
> > >>>> will show you what your mount is actually using.
> > >>>> The only mount option I can suggest trying is
> > >>>> "rsize=32768,wsize=32768",
> > >>>> since some network environments have difficulties with 64K.
> > >>>>
> > >>>> There are a few things you can try on the NFSv4 server side, if
> > >>>> it
> > >>>> appears
> > >>>> that the clients are generating a large RPC load.
> > >>>> - disabling the DRC cache for TCP by setting vfs.nfsd.cachetcp=0
> > >>>> - If the server is seeing a large write RPC load, then
> > >>>> "sync=disabled"
> > >>>> might help, although it does run a risk of data loss when the
> > >>>> server
> > >>>> crashes.
> > >>>> Then there are a couple of other ZFS related things (I'm not a
> > >>>> ZFS
> > >>>> guy,
> > >>>> but these have shown up on the mailing lists).
> > >>>> - make sure your volumes are 4K aligned and ashift=12 (in case a
> > >>>> drive
> > >>>> that uses 4K sectors is pretending to be 512byte sectored)
> > >>>> - never run over 70-80% full if write performance is an issue
> > >>>> - use a zil on an SSD with good write performance
> > >>>>
> > >>>> The only NFSv4 thing I can tell you is that it is known that
> > >>>> ZFS's
> > >>>> algorithm for determining sequential vs random I/O fails for
> > >>>> NFSv4
> > >>>> during writing and this can be a performance hit. The only
> > >>>> workaround
> > >>>> is to use NFSv3 mounts, since file handle affinity apparently
> > >>>> fixes
> > >>>> the problem and this is only done for NFSv3.
> > >>>>
> > >>>> rick
> > >>>>
> > >>>>> I saw that there are TSO issues with igb then i'm trying to
> > >>>>> disable
> > >>>>> it with sysctl but the situation wasn't solved.
> > >>>>>
> > >>>>> Someone has got ideas ? I can give you more informations if you
> > >>>>> need.
> > >>>>>
> > >>>>> Thanks in advance.
> > >>>>> Regards,
> > >>>>>
> > >>>>> Loïc Blot,
> > >>>>> UNIX Systems, Network and Security Engineer
> > >>>>> http://www.unix-experience.fr
> > >>>>> _______________________________________________
> > >>>>> freebsd-fs at freebsd.org mailing list
> > >>>>> http://lists.freebsd.org/mailman/listinfo/freebsd-fs
> > >>>>> To unsubscribe, send any mail to
> > >>>>> "freebsd-fs-unsubscribe at freebsd.org"
> > >>>
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