On 3/15/13 11:03 AM, Rich Johnston wrote:
> On 03/15/2013 09:55 AM, David Sterba wrote:
>> On Tue, Mar 12, 2013 at 11:42:50AM -0500, Eric Sandeen wrote:
>>> Define a new _defrag_dir() helper which just runs noisy/debug
>>> dir defrag for ext4 and/or btrfs as well, and use that in 222
>>> instead of hardcoded xfs_fsr.
>>
>> Dir defrag on btrfs does not recurse in the given directory to defrag
>> all files, but defragments the tree of the containing subvolume and the
>> whole extent tree (thus needs CAP_SYS_ADMIN).
>>
>> This is known (and not very intuitive) behaviour, it would be better to
>> add a special parameter to defrag the root and/or the extent root and
>> pass it down to the ioctl via flags.
>>
>> Until this is implemented I suggest to use a workaround via 'find':
>>
>> find $dir -print -execdir $DEFRAG_PROG '{}' +
>>
>> Otherwise the test looks ok.
>>
>> david
>
> Eric, I will make this change at commit time if you agree?
>
> David, can I put your name as the reviewer when I do?
I think that's big enough change I should send a V2. and
make a btrfs-special case in _defrag_dir.
-Eric
> Thanks
> --Rich
>
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