[OmniOS-discuss] ZFS crash/reboot loop

[Derek Yarnell]

>> ffffff0d4071ca98::print arc_buf_t b_hdr |::print arc_buf_hdr_t b_size
> b_size = 0
>>
> 
> Ouch.  There's your zero.
> 
> I'm going to forward this very note to the illumos ZFS list.  I see ONE possible bugfix post-r151014 that might help:
> 
> commit 31c46cf23cd1cf4d66390a983dc5072d7d299ba2
> Author: Alek Pinchuk <alek at nexenta.com>
> Date:   Tue Jun 30 09:44:11 2015 -0700
> 
>     6033 arc_adjust() should search MFU lists for oldest buffer when adjusting MFU size
>     Reviewed by: Saso Kiselkov <saso.kiselkov at nexenta.com>
>     Reviewed by: Xin Li <delphij at delphij.net>
>     Reviewed by: Prakash Surya <me at prakashsurya.com>
>     Approved by: Matthew Ahrens <mahrens at delphix.com>
> 
> It's a small bug, and I shudder to say this, even hot-patchable on a running system if you're desperate.  :)
> 

Hi Dan,

I don't need to hot patch (cold patch would be fine) so any update that
I can apply and reboot would be fine.  We have a second OmniOS r14 copy
running that we are happy to patch in any way possible to get it mounted rw.

Thanks,
derek

-- 
Derek T. Yarnell
University of Maryland
Institute for Advanced Computer Studies