ZFS on root booting broken somewhere after r270020

[Konstantin Belousov]

On Tue, Aug 19, 2014 at 10:32:08AM +0300, Kimmo Paasiala wrote:
> 
> On 19.8.2014, at 10.10, Konstantin Belousov <kostikbel at gmail.com> wrote:
> 
> > On Tue, Aug 19, 2014 at 07:40:46AM +0300, Kimmo Paasiala wrote:
> >> 
> >> On 18.8.2014, at 8.54, Kimmo Paasiala <kpaasial at icloud.com> wrote:
> >> 
> >>> 
> >>> On 18.8.2014, at 2.32, Kimmo Paasiala <kpaasial at icloud.com> wrote:
> >>> 
> >>>> System is:
> >>>> 
> >>>> FreeBSD freebsd10.rdnzl.info 10.0-STABLE FreeBSD 10.0-STABLE #2 r270020: Fri Aug 15 20:38:59 EEST 2014     kimmo at buildstable10amd64.rdnzl.info:/usr/obj/usr/src/sys/GENERIC  amd64
> >>>> 
> >>>> This version still works fine. The one that didn?t work was r270097. The kernel boots but gets stuck at the line:
> >>>> 
> >>>> Trying to mount root from zfs:pool/ROOT/default []
> >>>> 
> >>>> I tried pressing enter at this point but got a panic, I don?t have a screenshot of the panic at the moment.
> >>>> 
> >>>> Could this problem be related the this commit? :
> >>>> 
> >>>> http://svnweb.freebsd.org/base?view=revision&sortby=rev&sortdir=down&revision=270095
> >>>> 
> >>>> -Kimmo
> >>> 
> >>> Trying to bisect this I backed to r270050 and that version still works. More to come.
> >>> 
> >>> -Kimmo
> >> 
> >> Version r270094 still works but commit r270095 definitely does break booting from ZFS on root on my system. The error message I see on the console is  ?Mounting from <the ZFS filesystem> failed with error 5? and I?m given the mountroot prompt. I don?t see the ZFS pool among the listed GEOM devices on the mountroot prompt.
> >> 
> >> Adding the committer of r270095 (kib@) to this discussion.
> > 
> > I have no idea about ZFS, but the fact that things, which are lower-level
> > than ZFS filesystem itself are missing, suggests that the issue is unrelated.
> > At the very least, start with providing the verbose boot dmesg for successful
> > and failed boots.
> 
> This looks like to be unrelated to ZFS as you?re saying. I just remembered that I?m loading fuse.ko in my /boot/loader.conf. I commented that one out and what do you know? The system boots fine with the r270095 kernel.
> 
> Very very strange? 
This probably indicates KBI mismatch.

Is your fuse.ko installed from the kernel build ?
Still, I think the verbose dmesg is the start to look.

> 
> Thanks for the input anyway,
> 
> -Kimmo
> 
> 
> 


-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 819 bytes
Desc: not available
URL: <http://lists.freebsd.org/pipermail/freebsd-stable/attachments/20140819/6748bc57/attachment.sig>