Re: problem updating 10-STABLE

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>=20
> Message: 5
> Date: Wed, 16 Jul 2014 19:06:32 +0900 (JST)
> From: Yoshiaki Kasahara <[e-mail]>
> To: [e-mail]
> Subject: problem updating 10-STABLE
> Message-ID:
> 	<[e-mail]>
> Content-Type: Text/Plain; charset=3Dus-ascii
>=20
> Hi,
>=20
> Today I tried to update my 10-STABLE machine (full ZFS including root)
> from r268480 (built on Jul 10) to r268734 (built today), but after
> make installkernel and reboot into single user mode (to do make
> installworld and mergemaster), I couldn't proceed further because "zfs
> mount -a" crashed immediately with segfault.  Because only read-only
> root fs was available, I couldn't do any debugging (/usr resides in a
> separate fs).  Actually any zfs or zpool commands seemed to crash
> immediately.
>=20
> There were several ZFS related commits between two builds, but I
> believe old userland should be usable with a newer kernel (or I cannot
> follow the standard install procedure).
>=20
> % uname -a
> FreeBSD elvenbow.cc.kyushu-u.ac.jp 10.0-STABLE FreeBSD 10.0-STABLE #0 =
r268480: Thu Jul 10 15:25:15 JST 2014     =
[e-mail]:/usr/obj/usr/src/sys/ELVENBOW  amd64
> % what /boot/kernel.new/kernel
> /boot/kernel.new/kernel:
>        FreeBSD 10.0-STABLE #0 r268734: Wed Jul 16 12:36:48 JST 2014
>=20
> Any suggestions?  I don't want to do make installworld during multi
> user mode because I cannot ensure new zfs userland will work with new
> kernel (if not, my system will become unusable).  Maybe try installing
> new /rescue only and try it with the new kernel?
>=20
> I'm considering to set up BE to avoid this kind of problem, but I need
> some exercise...
>=20
> Regards,
> --=20
> Yoshiaki Kasahara
> Research Institute for Information Technology, Kyushu University
> [e-mail]
>=20
>=20

I=92m also seeing the same behavior on my amd64 system, with the updated =
kernel none of the zpool(8)/zfs(8) tools work but segfault. I reverted =
back to the kernel from my previous build that is r268600 and that one =
still works. The one that didn=92t work was r268733. I=92m just guessing =
here but the suspect commit could be:

=
http://svnweb.freebsd.org/base?view=3Drevision&sortby=3Drev&sortdir=3Ddown=
&revision=3D268658

Adding the committer delphij to this discussion, can you please comment =
on this matter?

-Kimmo

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