Fwd: L2ARC and pool corruption

[Mark Saad]

---
Mark Saad | nonesuch at longcount.org

Begin forwarded message:

> From: Ryan Zezeski <ryan at zinascii.com>
> Subject: L2ARC and pool corruption
> 
> A bug was discovered in L2ARC that can cause pool metadata corruption and ultimately prevents the pool from being imported. This bug was introduced back in Dec 2014. A fix is currently under review.
> 
> I recommend that we disable L2ARC for any SmartOS platform images that include this commit:
> 
> commit 89c86e32293a30cdd7af530c38b2073fee01411c
> Author: Chris Williamson <Chris.Williamson at delphix.com>
> Date:   Mon Dec 29 19:12:23 2014 -0800
> 
>     5408 managing ZFS cache devices requires lots of RAM
>     Reviewed by: Christopher Siden <christopher.siden at delphix.com>
>     Reviewed by: George Wilson <george.wilson at delphix.com>
>     Reviewed by: Matthew Ahrens <mahrens at delphix.com>
>     Reviewed by: Don Brady <dev.fs.zfs at gmail.com>
>     Reviewed by: Josef 'Jeff' Sipek <josef.sipek at nexenta.com>
>     Approved by: Garrett D'Amore <garrett at damore.org>
> 
> If you are unsure if a given platform includes this commit then send me the version string and I'll find out.
> 
> Here is the announcement on the OmniOS discussion list with more information:
> 
> http://permalink.gmane.org/gmane.os.omnios.general/5113
> 
> And the official bug report with root cause analysis:
> 
> https://www.illumos.org/issues/6214
> 
> -Z