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Re: Metadata CRC error upon unclean unmount

To: Dave Chinner <david@xxxxxxxxxxxxx>
Subject: Re: Metadata CRC error upon unclean unmount
From: Fanael Linithien <fanael4@xxxxxxxxx>
Date: Tue, 24 Jun 2014 22:44:35 +0200
Cc: xfs@xxxxxxxxxxx
Delivered-to: xfs@xxxxxxxxxxx
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In-reply-to: <20140624201946.GJ9508@dastard>
References: <CA+o=1OW0OXhzU+b9ACMZzg0dq=B7BSj+yPXD2Vrr9F6mWK8ruQ@xxxxxxxxxxxxxx> <20140624201946.GJ9508@dastard>
2014-06-24 22:19 GMT+02:00 Dave Chinner <david@xxxxxxxxxxxxx>:
> OK, that doesn't tell us that the problem is a CRC error, just that
> the btree block on disk has problems. I'd recommend an upgrade to
> 3.15 which has much better error reporting in situations like this,
> and it is no longer experimental...

The original error was caused by 3.15, but the error messages were
from 3.14 because that's what Arch install CD uses, and I had to use
the CD because the hosed filesystem was /.
Now that I think about it, setting up another 3.15 installation to try
to recover that FS would be a better idea, but now it's too late.

At any rate, I'm still trying to reproduce this and will surely report
if I succeed. So far, the only thing I've managed to found is that log
record CRC mismatch thing.

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