On 2/8/06, Bob Sanders <[EMAIL PROTECTED]> wrote:
>
> It was never designed to work like a WinXX defragger.  The man page states
> exactly what it will do, and consolidating space is not part of it's
> design.

Yes, I've read the man page, and I understood it.

Also, I didn't mean to deride xfs or xfs_fsr/fsr_xfs, so please don't
take it personally.  It is the *only* filesystem that offers a online
defrag tool for linux today, and that is a big bonus.  My complaint is
more of a wish list than anything else.  But it isn't a big enough
wish for me to spend time working on it myself!

> xfs_fsr/fsr_xfs was designed to deal with multi-gigabyte and terabyte files.  
> Not
> to free up space in small partitions.

My comment about "not worth running" should have been qualified to
small filesystems with small files (like root, ported, et al).

But actually, it is with the handling of multi-gigabyte files that I
find it lacking.  My VMWare virtual disk images are 10-20G.  So if I
don't have at least 20G of free space on a filesystem, I cannot
defragment those.  Moreover, since xfs_fsr doesn't consolidate free
space, it is probable that no improvements could be made to those
files even if I have 50G free, since there are likely to be some files
spread out over the disk if the filesystem has been in use for any
length of time.

-Richard

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