Re: ZFS panic in -CURRENT

From: R. Tyler Croy <tyler_at_monkeypox.org>
Date: Mon, 31 Mar 2014 16:22:32 -0700
Bumping this with more details

On Fri, 28 Mar 2014 09:53:32 -0700
R Tyler Croy <tyler_at_monkeypox.org> wrote:

> Apologies for the rough format here, I had to take a picture of this
> failure because I didn't know what else to do.
> 
> <http://www.flickr.com/photos/agentdero/13469355463/>
> 
> I'm building off of the GitHub freebsd.git mirror here, and the
> latest commit in the tree is neel_at_'s "Add an ioctl to suspend.."
> 
> My dmesg/pciconf are here:
> https://gist.github.com/rtyler/1faa854dff7c4396d9e8


As linked before, the dmesg and `pciconf -lv` output can be found here:
<https://gist.github.com/rtyler/1faa854dff7c4396d9e8>

Also in addition to the photo from before of the panic, here's another
reproduction photo:
<https://www.flickr.com/photos/agentdero/13472248423/>

I'm running -CURRENT as of r263881 right now, with a custom kernel
which is built on top of the VT kernel
(https://github.com/rtyler/freebsd/blob/5e324960f1f2b7079de369204fe228db4a2ec99d/sys/amd64/conf/KIWI)

I'm able to get this panic *consistently* whenever a process accesses
my maildir folder which I sync with the mbsync program (isync package),
such as `mbsync personal` or when I back up the maildir with duplicity.
The commonality seems to be listing or accessing portions of this file
tree. Curiously enough it only seems to be isolated to that single
portion of the filesystem tree.

The zpool is also clean as far as errors go:

> [16:11:03] tyler:freebsd git:(master*) $ zpool status zroot
>   pool: zroot
>  state: ONLINE
> status: Some supported features are not enabled on the pool. The pool
> can still be used, but some features are unavailable.
> action: Enable all features using 'zpool upgrade'. Once this is done,
>         the pool may no longer be accessible by software that does not
> support the features. See zpool-features(7) for details.
>   scan: scrub repaired 0 in 0h18m with 0 errors on Fri Mar 28 11:55:03
> 2014 config:
> 
>         NAME          STATE     READ WRITE CKSUM
>         zroot         ONLINE       0     0     0
>           ada0p3.eli  ONLINE       0     0     0
> 
> errors: No known data errors
> [16:19:57] tyler:freebsd git:(master*) $ 


I'm not sure what other data would be useful here, I can consistently
see the panic, but this data is highly personal, so I'm not sure how
much of a "repro case" I can give folks. :(

Cheers
-- 

- R. Tyler Croy

------------------------------------------------------
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  Chatter: <https://twitter.com/agentdero>

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Received on Mon Mar 31 2014 - 21:22:44 UTC

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