From: Eric Sandeen <sandeen@redhat.com>
To: Theodore Tso <tytso@mit.edu>
Cc: Andreas Dilger <adilger@sun.com>, linux-ext4@vger.kernel.org
Subject: Re: Rare xfsqa test failure
Date: Wed, 19 Aug 2009 10:28:04 -0500 [thread overview]
Message-ID: <4A8C1A04.1090501@redhat.com> (raw)
In-Reply-To: <20090818214218.GK28560@mit.edu>
Theodore Tso wrote:
> On Tue, Aug 18, 2009 at 11:07:05AM -0600, Andreas Dilger wrote:
>>> EXTENTS:
>>> (65-80): 60720-60735, (81-222 [uninit]): 1181574-1181715, (223-229): 1181716-118
>>> 1722
>>> debugfs:
>>>
>>> So it looks like there's a race which can cause ext4 to somehow miss an
>>> i_size update.
>> Are you sure it is a failure to update i_size, or is it possibly an
>> fallocate that extends the block count beyond i_size?
>
> Look at the EXTENTS report from debugfs; blocks 81-222 are
> uninitialized from an fallocate, but block 223-229 are initialized.
>
> - Ted
This was from test 013?
If so, that calls ltp's fsstress, which does not call fallocate nor
posix_fallocate. It only does preallocation on xfs via the old
xfs-specific ioctl (though I suppose we should add it...)
-Eric
next prev parent reply other threads:[~2009-08-19 15:28 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-08-18 11:57 Rare xfsqa test failure Theodore Ts'o
2009-08-18 14:56 ` Theodore Tso
2009-08-18 17:07 ` Andreas Dilger
2009-08-18 21:42 ` Theodore Tso
2009-08-19 15:28 ` Eric Sandeen [this message]
2009-08-19 16:40 ` Christoph Hellwig
2009-08-19 16:51 ` Eric Sandeen
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