linux-ext4 - Re: sparsify - utility to punch out blocks of 0s in a file

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Message-ID: <4F2D925A.1070702@redhat.com>
Date:	Sat, 04 Feb 2012 14:17:30 -0600
From:	Eric Sandeen <sandeen@...hat.com>
To:	ext4 development <linux-ext4@...r.kernel.org>,
	xfs-oss <xfs@....sgi.com>
Subject: Re: sparsify - utility to punch out blocks of 0s in a file

On 2/4/12 2:10 PM, Eric Sandeen wrote:

> Hm but something is weird, right after the punch-out xfs says
> it uses 84K:
> 
> [root@...de sparsify]# du -hc fsfile
> 84K	fsfile
> 84K	total
> 
> but then after an xfs_repair it looks saner:
> # du -hc fsfile
> 4.8M	fsfile
> 4.8M	total
> 
> something to look into I guess... weird.

nvm that's just xfs_repair zeroing the log & reinstating the blocks.
Sorry for the noise - Ok, back to my Saturday.

-Eric

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