From: Eric Sandeen <sandeen@redhat.com>
To: Ron Yorston <rmy@tigress.co.uk>
Cc: xfs@oss.sgi.com, linux-ext4@vger.kernel.org
Subject: Re: sparsify - utility to punch out blocks of 0s in a file
Date: Sun, 05 Feb 2012 11:21:26 -0600 [thread overview]
Message-ID: <4F2EBA96.2070603@redhat.com> (raw)
In-Reply-To: <201202051719.q15HJJme010040@helium.internal.tigress.co.uk>
On 2/5/12 11:19 AM, Ron Yorston wrote:
> OK, I tried it out for my use case of flinging VM filesystem images around
> on ext4 and it seems to do the job. I don't have any 64-bit systems
> here at home so I used my feeble 32-bit netbook. Since sizeof(off_t) !=
> sizeof(long long) the debug output was all wrong:
>
> punching at 8989607068975104 len -4635819229210214401
whoops, I'll fix that thanks.
This is the problem when I start something as a hack and then expose it
to the light of day. ;)
-Eric
> but the image file and the host filesystem both survived the ordeal.
>
> Ron
next prev parent reply other threads:[~2012-02-05 17:21 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-04 20:04 sparsify - utility to punch out blocks of 0s in a file Eric Sandeen
2012-02-04 20:10 ` Eric Sandeen
2012-02-04 20:17 ` Eric Sandeen
2012-02-05 15:05 ` Raghavendra D Prabhu
2012-02-05 23:44 ` Michael Tokarev
2012-02-05 23:55 ` Eric Sandeen
2012-02-05 9:33 ` Ron Yorston
2012-02-05 16:36 ` Eric Sandeen
2012-02-05 16:55 ` Andreas Dilger
2012-02-05 17:23 ` Matthias Schniedermeyer
2012-02-05 17:23 ` Eric Sandeen
2012-02-05 19:24 ` Andreas Dilger
2012-02-05 17:19 ` Ron Yorston
2012-02-05 17:21 ` Eric Sandeen [this message]
2012-02-06 18:40 ` Sunil Mushran
2012-02-06 21:41 ` Ted Ts'o
2012-02-06 21:47 ` Eric Sandeen
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