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Re: reserved blocks pool default size

To: ??ukasz Ole?? <lukasz.oles@xxxxxxxxxx>
Subject: Re: reserved blocks pool default size
From: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Date: Fri, 27 Jan 2012 06:40:32 -0500
Cc: xfs@xxxxxxxxxxx
In-reply-to: <4F22843E.4050804@xxxxxxxxxx>
References: <4F22843E.4050804@xxxxxxxxxx>
User-agent: Mutt/1.5.21 (2010-09-15)
On Fri, Jan 27, 2012 at 12:02:22PM +0100, ??ukasz Ole?? wrote:
> Hi,
> 
> I updated kernel from 2.6.27 to 2.6.35 and noticed that free size on
> my xfs volume changed. Before update there was 7MB free space, now
> there is none.
> 
> After some investigation I found that default size for reserved
> block pool changed [1].
> On this volume I have one very big file which is exported as iSCSI
> disk via SCST and one small configuration file. The big file size
> will never change. Small file size can change only by some KB.
> 
> With this assumptions, can I revert this change and set reserved
> blocks pool size to 1024 blocks?

If it worked fine for your workload before it should work fine with
newer kernels, too.

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