Re: xfs_fsr, performance related tweaks

[Eric Sandeen <sandeen@sandeen.net>]

David Chinner wrote:
> On Fri, Jun 29, 2007 at 08:16:28AM +0100, Just Marc wrote:
>> David,
>>
>> In my first post I already said something like that can be done but it's 
>> just an ugly hack.   Don't you think it would best be handled cleanly 
>> and correctly by fsr itself?
> 
> No, I don't - if you want files not to be defragmented, then you
> have to set the flags yourself in some way. You have a specific need
> that can be solved by some scripting to describe your defrag/no
> defrag policy. xfs_fsr has no place is setting defrag policy; it's
> function is simply to find and defrag files.

I wouldn't mind seeing a way to tell fsr to not worry about defragging
some files based on current layout; say if the avg extent in the file is
> 100MB, or > 1G, don't bother... if today you have a 4.7G DVD iso image
in 3 extents (not bad) fsr will try to "fix" it for you right?

-eric


> Cheers,
> 
> Dave.