latest 8.0-BETA2 lost my zfs

[Danny Braniss]

> On Aug 18, 2009, at 16:42, Danny Braniss wrote:
> 
> >> it seems that the latest changes to zfs prevents zpool to see/find
> >> the pool in /dev/ad0p4 (BTW, the pool was created under 8.0)
> >>
> >> # gpart show
> >> =>        34  1953525101  ad0  GPT  (932G)
> >>          34         128    1  freebsd-boot  (64K)
> >>         162     4194304    2  freebsd-ufs  (2.0G)
> >>     4194466     8388608    3  freebsd-swap  (4.0G)
> >>    12583074  1940942061    4  freebsd-zfs  (926G)
> >>
> >> # zpool list
> >> no pools available
> >> # zpool import -a
> >> #
> >>
> >> under 7.2, the pool is still there:
> >>
> >> pundit-2> zfs list
> >> NAME     USED  AVAIL  REFER  MOUNTPOINT
> >> z       5.27G   900G    18K  /z
> >> z/home  5.21G   900G  5.21G  /home
> >> z/var   59.7M   900G  59.7M  /var
> >> pundit-2> zpool list
> >> NAME   SIZE   USED  AVAIL    CAP  HEALTH  ALTROOT
> >> z      920G  5.27G   915G     0%  ONLINE  -
> >
> > running 'truss zpool import -a' reveals the problem:
> >
> > open("ad0p4",O_RDONLY,00)                        ERR#2 'No such file  
> > or directory'
> > open("/dev/ad0p4",O_RDONLY,05003312752)          = 5 (0x5)
> > ioctl(5,DIOCGSECTORSIZE,0xbfbfa1f4)              = 0 (0x0)
> > fstat(5,{ mode=crw-r----- ,inode=75,size=0,blksize=4096 }) = 0 (0x0)
> > pread(0x5,0x2834a000,0x40000,0x0,0x0,0x805ab64)  = 262144 (0x40000)
> > pread(0x5,0x2834a000,0x40000,0x40000,0x0,0x1bfd8) = 262144 (0x40000)
> > pread(0x5,0x2834a000,0x40000,0xfff80000,0xffffffff,0x1bfd8) ERR#5  
> > 'Input/output error'
> >                             ********** offset is a bit too big :-)
> > pread(0x5,0x2834a000,0x40000,0xfffc0000,0xffffffff,0x1bfd8) ERR#5  
> > 'Input/output error'
> 
> Glad I'm not the only one. I reported the same issue yesterday, in a  
> thread originally about something else zfs related (zfs send sends a  
> broken stream, or recv considers it broken despite it being fine; I  
> don't know which one it is): http://lists.freebsd.org/pipermail/freebsd-current/2009-August/010709.html
> 
> FWIW, my truss output (ggate142 is the ZFS pool device I *just*  
> created and then exported, and ad2s1b is my swap/dump device):
> (from "truss -o outfile zpool import")
> [...]
> open("ad2s1b",O_RDONLY,00)                       ERR#2 'No such file  
> or directory'
> open("/dev/ad2s1b",O_RDONLY,00)                  = 7 (0x7)
> ioctl(7,DIOCGSECTORSIZE,0xffff9fc4)              = 0 (0x0)
> fstat(7,{ mode=crw-r----- ,inode=79,size=0,blksize=4096 }) = 0 (0x0)
> pread(0x7,0x80128c000,0x40000,0x0,0x34004,0x801201340) = 262144  
> (0x40000)
> pread(0x7,0x80128c000,0x40000,0x40000,0x1,0x801201340) = 262144  
> (0x40000)
> pread(0x7,0x80128c000,0x40000,0xfffffffffff80000,0x1,0x801201340)  
> ERR#5 'Input/output error'
> pread(0x7,0x80128c000,0x40000,0xfffffffffffc0000,0x1,0x801201340)  
> ERR#5 'Input/output error'
> close(7)                                         = 0 (0x0)
> open("ggate142",O_RDONLY,00)                     ERR#2 'No such file  
> or directory'
> open("/dev/ggate142",O_RDONLY,00)                = 7 (0x7)
> ioctl(7,DIOCGSECTORSIZE,0xffff9fc4)              = 0 (0x0)
> fstat(7,{ mode=crw-r----- ,inode=93,size=0,blksize=4096 }) = 0 (0x0)
> pread(0x7,0x80128c000,0x40000,0x0,0x34004,0x801201340) = 262144  
> (0x40000)
> pread(0x7,0x80128c000,0x40000,0x40000,0x1,0x801201340) = 262144  
> (0x40000)
> pread(0x7,0x80128c000,0x40000,0xfffffffffff80000,0x1,0x801201340)  
> ERR#5 'Input/output error'
> pread(0x7,0x80128c000,0x40000,0xfffffffffffc0000,0x1,0x801201340)  
> ERR#5 'Input/output error'
> close(7)                                         = 0 (0x0)
> close(4)                                         = 0 (0x0)
> close(5)                                         = 0 (0x0)
> close(6)                                         = 0 (0x0)
> ...
> sigprocmask(...)
> process exit, rval = 1
> 
> Regards,
> Thomas

the plot thickens, compiling cddl/lib/libnvpair under 8-BETA2 works ok,
so it seems that cross compiling (using a 7.2 system) causes the problem, it
seems it's picking something from the local environment.

any make expert in the house?

danny