xfs
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Re: strange nfs...

To: Klaus Rein <k.rein@xxxxxxxxx>
Subject: Re: strange nfs...
From: Steve Lord <lord@xxxxxxx>
Date: Mon, 13 Aug 2001 13:07:12 -0500
Cc: linux-xfs@xxxxxxxxxxx
In-reply-to: Message from Klaus Rein <k.rein@levigo.de> of "Mon, 13 Aug 2001 20:02:33 +0200." <3B781639.41D932EA@levigo.de>
Sender: owner-linux-xfs@xxxxxxxxxxx
> Seth Mos wrote:
> 
> > XFS pre allocates pieces of disk to reduce fragmentation. After time this
> > will be returned. It is a feature :-)
> 
> How long will it take? After six days the space is still not returned.
> Is there a way to force it?
> 
> > Can't come up with the exact message, try the searchable mail archive. It
> > has come up before.
> 
> I can not find it - I think I tried the wrong key words... 
> :-(
> 
> Klaus.

Hmm, XFS when running under an nfs server, will keep an extra reference
on the last set of files accessed. This prevents xfs from constantly
freeing this space and then reallocating it on the next write and is a
very major performance win in NFS. Now entries are supposed to get
dropped from the cache over time when the system is idle, it should
not take many minutes for this to happen, it sounds like this part
is broken.

If you unmount the filesystem and then remount it the files should
report using the correct amount of space again.


Steve



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