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Re: Metadata CRC error upon unclean unmount

To: Eric Sandeen <sandeen@xxxxxxxxxxx>
Subject: Re: Metadata CRC error upon unclean unmount
From: Fanael Linithien <fanael4@xxxxxxxxx>
Date: Tue, 24 Jun 2014 18:19:04 +0200
Cc: xfs@xxxxxxxxxxx
Delivered-to: xfs@xxxxxxxxxxx
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2014-06-24 18:08 GMT+02:00 Eric Sandeen <sandeen@xxxxxxxxxxx>:
> Do you have any kind of reproducer for this?

The closest thing to a reliable reproducer I found is:
dd if=/dev/urandom of=some.file
<VM reset while dd is still running>

> Any chance you created an xfs_metadump before the xfs_repair?

I still have the broken FS, but the dump is 225 MB. Will it be OK if I
repro it on a clean FS?

> What constitutes an "unclean unmount" in your case; a VM reset?  A host
> crash?

A VM reset.

> (This is a VM, right?)


> What sort of block device configuration does it have?

What do you mean?

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