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Re: [PATCH] xfstests: very basic defragmentation testing for xfs & ext4

To: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Subject: Re: [PATCH] xfstests: very basic defragmentation testing for xfs & ext4
From: Eric Sandeen <sandeen@xxxxxxxxxx>
Date: Sat, 18 Jul 2009 11:30:13 -0500
Cc: xfs mailing list <xfs@xxxxxxxxxxx>, ext4 development <linux-ext4@xxxxxxxxxxxxxxx>
In-reply-to: <20090718143114.GC20905@xxxxxxxxxxxxx>
References: <4A5E3A37.5050306@xxxxxxxxxx> <20090718143114.GC20905@xxxxxxxxxxxxx>
User-agent: Thunderbird 2.0.0.22 (Macintosh/20090605)
Christoph Hellwig wrote:
> On Wed, Jul 15, 2009 at 03:21:11PM -0500, Eric Sandeen wrote:

...

>> (md5sums may just be reading buffered data though,
>> suggestions?)
> 
> As Andreas said unmount it before.
> 
>> The test currently expects to find e4defrag in
>> /usr/bin
> 
>> +_supported_fs xfs ext4
> 
>> +fragfile=$SCRATCH_MNT/fragfile.$$
>> +
>> +if [ "$FSTYP" == "xfs" ]; then
>> +    DEFRAG=/usr/sbin/xfs_fsr
>> +else
>> +    DEFRAG=/usr/bin/e4defrag
>> +fi
>> +
>> +_require_command $DEFRAG
>> +_require_command /usr/sbin/filefrag
> 
> I think we're much better off adding a helpers for this in a new
> common.defrag (or adding it somwhere).
> 
> Then set a DEFRAF_PROG variable there, and add a _require_defrag
> ala


Both ideas sound good, will send a V2.

-Eric

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