From: Ben Myers <bpm@sgi.com>
To: Eric Sandeen <sandeen@redhat.com>
Cc: "'linux-xfs@oss.sgi.com'" <linux-xfs@oss.sgi.com>,
Eric Sandeen <sandeen@sandeen.net>
Subject: Re: [PATCH, RFC] xfs: be more forgiving of a v4 secondary sb w/ junk in v5 fields
Date: Thu, 17 Oct 2013 15:17:11 -0500 [thread overview]
Message-ID: <20131017201711.GJ1935@sgi.com> (raw)
In-Reply-To: <520D592D.4040600@redhat.com>
On Thu, Aug 15, 2013 at 05:41:49PM -0500, Eric Sandeen wrote:
> Today, if xfs_sb_read_verify encounters a v4 superblock
> with junk past v4 fields which includes data in sb_crc,
> it will be treated as a failing checksum and significant
> corruption.
>
> There are known prior bugs which leave junk at the end
> of the superblock; we don't need to actually fail the
> verification in this case if other checks pan out ok.
>
> So if this is a secondary superblock, and the primary
> superblock is not V5, don't treat this as a serious
> checksum failure.
>
> We should probably check the garbage condition as
> we do in xfs_repair, and possibly warn about it
> or self-heal, but that's a different scope of work.
>
> Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Eric... is the one you're talking about?
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prev parent reply other threads:[~2013-10-17 20:17 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-15 18:19 [PATCH, RFC] xfs: don't verify checksum on non-V5 superblocks Eric Sandeen
2013-08-15 19:45 ` Ben Myers
2013-08-15 21:00 ` Dave Chinner
2013-08-15 21:15 ` Eric Sandeen
2013-08-15 22:41 ` [PATCH, RFC] xfs: be more forgiving of a v4 secondary sb w/ junk in v5 fields Eric Sandeen
2013-08-15 23:15 ` Dave Chinner
2013-09-09 20:33 ` [PATCH V2] " Eric Sandeen
2013-09-09 21:08 ` Mark Tinguely
2013-09-09 21:10 ` Eric Sandeen
2013-09-09 21:16 ` Mark Tinguely
2013-10-31 15:51 ` Ben Myers
2013-10-17 20:17 ` Ben Myers [this message]
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