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Subject: Re: ZFS: Panic when attempting to delete certain data
From: Steven Schlansker <stevenschlansker@gmail.com>
In-Reply-To: <CAHDrHStcfSJ-9ueSV+FujEsmAK3zMX2CAGVD6Xz_2gJAThu5Kg@mail.gmail.com>
Date: Tue, 27 Nov 2012 10:34:37 -0800
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To: Josh Beard <josh@signalboxes.net>
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On Nov 27, 2012, at 10:25 AM, Josh Beard <josh@signalboxes.net> wrote:

> Hello,
>=20
> I have a system that I can consistently reproduce a panic on when =
trying to
> delete certain data.  The data is data that was rsynced from another =
system
> - nothing terribly unique.  This has been ongoing from several months,
> starting with 9.0-RELEASE and now running 9.1-RC3.
> <snip>

Do you have dedupe turned on?  I (and others, from what I've gathered) =
had a lot of trouble with
panics and system hangs when deleting deduped data with insufficient =
RAM.

If that is the case, my only recourse turned out to be getting enough =
RAM in the box to offload
the data, destroy the filesystem, and start over=85