From: "Jim C. Brown" <jma5@umd.edu>
To: qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] Re: qemu disk on vfat
Date: Mon, 8 May 2006 19:50:24 -0400 [thread overview]
Message-ID: <20060508235024.GA18407@jbrown.mylinuxbox.org> (raw)
In-Reply-To: <20060508231032.GA12871@jbrown.mylinuxbox.org>
Aactually, the bug is in vfat not in qemu-img.
qemu-img correctly uses ftruncate() which is suppose to make the file sparse
if the underlying filesystem supports it, but it should fall back to adding zeros
to the end of the file. On vfat you aren't able to seek past the end of a file
period, so this doesn't work.
Probably qemu-img should just bail out in this case (as the other disk formats
should work fine and you can always use dd). The 2nd patch I released does
this - the error message just needs to be made more accurate.
--
Infinite complexity begets infinite beauty.
Infinite precision begets infinite perfection.
next prev parent reply other threads:[~2006-05-08 23:50 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-05-08 10:04 [Qemu-devel] qemu disk on vfat Yann Le Doaré
2006-05-07 8:44 ` André Braga
2006-05-08 10:41 ` Yann Le Doaré
2006-05-07 15:50 ` [Qemu-devel] " Alex
2006-05-07 11:00 ` [Qemu-devel] " NyOS
2006-05-07 13:47 ` Jernej Simončič
2006-05-08 19:44 ` Yann Le Doaré
2006-05-08 14:57 ` Jan Marten Simons
2006-05-09 21:05 ` Yann Le Doaré
2006-05-07 11:21 ` Johannes Schindelin
2006-05-08 21:12 ` [Qemu-devel] " Anthony Liguori
2006-05-09 23:41 ` Yann Le Doaré
2006-05-08 22:05 ` Michael McConnell
2006-05-08 22:48 ` Jim C. Brown
2006-05-08 23:10 ` Jim C. Brown
2006-05-08 23:50 ` Jim C. Brown [this message]
2006-05-09 1:36 ` Anthony Liguori
2006-05-09 2:11 ` Paul Brook
2006-05-16 17:21 ` Jim C. Brown
2006-05-08 22:23 ` Ian C. Blenke
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