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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


WARNING: multiple messages have this Message-ID (diff)
From: Eric Sandeen <sandeen@redhat.com>
To: Ron Yorston <rmy@tigress.co.uk>
Cc: linux-ext4@vger.kernel.org, xfs@oss.sgi.com
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

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  reply	other threads:[~2012-02-05 17:21 UTC|newest]

Thread overview: 34+ 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 20:04 ` Eric Sandeen
2012-02-04 20:10 ` Eric Sandeen
2012-02-04 20:10   ` Eric Sandeen
2012-02-04 20:17   ` Eric Sandeen
2012-02-04 20:17     ` Eric Sandeen
2012-02-05 15:05   ` Raghavendra D Prabhu
2012-02-05 15:05     ` Raghavendra D Prabhu
2012-02-05 23:44   ` Michael Tokarev
2012-02-05 23:44     ` Michael Tokarev
2012-02-05 23:55     ` Eric Sandeen
2012-02-05 23:55       ` Eric Sandeen
2012-02-05  9:33 ` Ron Yorston
2012-02-05  9:33   ` Ron Yorston
2012-02-05 16:36   ` Eric Sandeen
2012-02-05 16:36     ` Eric Sandeen
2012-02-05 16:55     ` Andreas Dilger
2012-02-05 16:55       ` Andreas Dilger
2012-02-05 17:23       ` Matthias Schniedermeyer
2012-02-05 17:23       ` Eric Sandeen
2012-02-05 17:23         ` Eric Sandeen
2012-02-05 19:24         ` Andreas Dilger
2012-02-05 19:24           ` Andreas Dilger
2012-02-05 17:19     ` Ron Yorston
2012-02-05 17:19       ` Ron Yorston
2012-02-05 17:21       ` Eric Sandeen [this message]
2012-02-05 17:21         ` Eric Sandeen
2012-02-06 18:40 ` Sunil Mushran
2012-02-06 18:40   ` [Ocfs2-devel] " Sunil Mushran
2012-02-06 18:40   ` Sunil Mushran
2012-02-06 21:41 ` Ted Ts'o
2012-02-06 21:41   ` Ted Ts'o
2012-02-06 21:47   ` Eric Sandeen
2012-02-06 21:47     ` Eric Sandeen

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