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Re: XFS holding onto disk memory

To: Walt H <waltabbyh@xxxxxxxxxxx>
Subject: Re: XFS holding onto disk memory
From: Steve Lord <lord@xxxxxxx>
Date: 26 Mar 2003 20:21:43 -0600
Cc: Mark Grimes <MGrimes@xxxxxxxxxxxxxxxxx>, Eric Sandeen <sandeen@xxxxxxx>, "'linux-xfs@xxxxxxxxxxx'" <linux-xfs@xxxxxxxxxxx>
In-reply-to: <3E825CA5.6010007@xxxxxxxxxxx>
References: <057889C7F1E5D61193620002A537E8690AD0AA@NCBDC> <1048706978.23087.83.camel@xxxxxxxxxxxxxxxxxxxx> <3E825CA5.6010007@xxxxxxxxxxx>
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On Wed, 2003-03-26 at 20:06, Walt H wrote:
> I'm not tremendously familiar with the innards of a filesystem, so this 
> question may be totally off the mark.  But.... Would freeing of inodes 
> allow the system to have contiguous free space? I've found when testing 
> servers prior to production, that if I create thousands of files and 
> potentially many runs of bonnie++ etc.. that certain aspects of 
> filesystem operation are slowed down, even after removing all the test 
> files. For example, if after removing all these test files and I 
> want/need to run an xfs_check/xfs_repair on said filesystem, it can drag 
> on for quite some time. This happens on a filesystem which now has very 
> little on it. Would freeing inodes help something such as this?
> -Walt

It would yes, but we are not currently planning on offering facilities
to clean up existing filesystems. Over time inode clusters would be
freed, but only as inodes were allocated in them and freed again.


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