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Date:	Tue, 01 Sep 2015 10:28:53 +0000
From:	bugzilla-daemon@...zilla.kernel.org
To:	linux-ext4@...r.kernel.org
Subject: [Bug 102731] I have a cough.

https://bugzilla.kernel.org/show_bug.cgi?id=102731

--- Comment #9 from John Hughes <john@...va.com> ---
> How many guest VM's are you running

One at the moment.

> how often does the file system corruption happens?   It sounds like it's about once every 2-3 weeks?

With the Debian 3.16 kernel it was happening about once every 4 days.

I installed my 3.18.19 kernel on 24/7/2015 and have seen the bug twice:
11/8/2015 and 31/8/2015.

> Would you be willing to experiment running the VM without using the RAID1 so we're bypassing the MD layer?

I guess I'll have to try that.  It's going to be a monumental pain in the arse:

The guests /home is a 160GiB LVM volume striped across 4 mdadm raid1's.

What I can try first is just disabling one side of the mdadm mirrors, if the
problem re-occurs I can get rid of mdadm completely.

(This will be the first time I've run one of my servers without disk mirroring
since 1986.  Ugh.)

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