[OmniOS-discuss] ZPOOL bug after upgrade to r151020

[wuffers]

I upgraded to r151020 in late Jan, and saw some strangeness with arcstat
(l2size and l2asize were huge) before I did a reboot due to some
instability a few weeks ago. I thought it was just a case of not using the
latest arcstat, and things were running fine after a reboot so didn't
pursue it.

I saw this post last week, and confirmed it was within my environment, so
did the remove/re-add of the cache devices, then a complete reboot as well.
The cache devices reported back their actual proper size (400GB) via "zpool
iostat -v". Today I checked it again and this is what I see:

# arcstat
read  hits  miss  hit%  l2read  l2hits  l2miss  l2hit%  arcsz  l2size
 l2asize
 465   412    53    88      53      50       3      94   230G    4.4T
3.2T

# zpool iostat -v

(other info snipped for brevity)

cache                          -      -      -      -      -      -
  c2t500117310015D579d0     816G  16.0E     54     23  2.32M  1.46M
  c2t50011731001631FDd0     816G  16.0E     54     23  2.32M  1.46M
  c12t500117310015D59Ed0    815G  16.0E     55     23  2.35M  1.46M
  c12t500117310015D54Ed0    816G  16.0E     55     23  2.36M  1.46M


I'm just waiting for the next lockup/crash..

John, were you able to compile the fix, and if so, be able send me a copy?

Thanks.


On Mon, Apr 10, 2017 at 10:00 AM, Dan McDonald <danmcd at omniti.com> wrote:

>
> > On Apr 9, 2017, at 10:27 PM, John Barfield <john.barfield at bissinc.com>
> wrote:
> >
> > Thank you Dan.
> >
> > Do you happen to have the process or know the location of a process
> document for only building ZFS?
> >
> > Ive re-built only nfs from illumos-gate in the past to resolve a bug but
> im wondering how I would build and install only zfs. (if its even possible).
> >
> > There are 2 bugs that we're suffering with at two different customer
> sites that didnt get into r151020 and Im not sure that we can make it till
> r151022 is released.
> >
> > Thanks for any advice
>
> You can build zfs the way you likely built NFS.  Build it, replace it on
> an alternate BE (in zfs's case:  /kernel/fs/amd64/zfs), and reboot.
>
> The only gotcha might be if a bugfix covers more than just ZFS itself...
> but for 7504, that's NOT the case.  :)
>
> Dan
>
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>
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