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Re: [PATCH 08/10] xfstests: enable large fs testing on ext4

To: Dave Chinner <david@xxxxxxxxxxxxx>
Subject: Re: [PATCH 08/10] xfstests: enable large fs testing on ext4
From: Rich Johnston <rjohnston@xxxxxxx>
Date: Wed, 5 Sep 2012 11:27:12 -0500
Cc: <xfs@xxxxxxxxxxx>
In-reply-to: <1343291989-14987-9-git-send-email-david@xxxxxxxxxxxxx>
References: <1343291989-14987-1-git-send-email-david@xxxxxxxxxxxxx> <1343291989-14987-9-git-send-email-david@xxxxxxxxxxxxx>
User-agent: Mozilla/5.0 (X11; Linux i686; rv:13.0) Gecko/20120615 Thunderbird/13.0.1
On 07/26/2012 03:39 AM, Dave Chinner wrote:
From: Dave Chinner <dchinner@xxxxxxxxxx>

Now that setting up large filesystem testing on sparse loopback
devices uses a generic method for filling the filesystem, extent
support to ext4 filesystems.

ext4 is slightly more complex to fill as it does not support files
larger than 16TB. Hence a slightly more complex method of using
multiple smaller files to fill the space is necessary.

WARNING: be prepeared for ext4 to take forever to prepare large
filesystems as allocation of large amounts of space (especially as
it approaches ENOSPC) is can take minutes rather than milliseconds

Signed-off-by: Dave Chinner <dchinner@xxxxxxxxxx>
---
  common.rc |   90 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
  1 file changed, 90 insertions(+)


Looks good.

Reviewed-by: Rich Johnston <rjohnston@xxxxxxx>

Regards
--Rich

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