From: Jamie Lokier <jamie@shareable.org>
To: qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] qcow2 - safe on kill? safe on power fail?
Date: Tue, 22 Jul 2008 17:16:07 +0100 [thread overview]
Message-ID: <20080722161607.GA22535@shareable.org> (raw)
In-Reply-To: <4885F068.2060902@qumranet.com>
> It's a simple matter of allocating, making sure the allocation is on
> disk, and recording that allocation in the tables.
The simple implementations are only safe if sector writes are atomic.
Opinions from Google seem divided about when you can assume that,
especially when the underlying file or device is not directly mapped
to disk sectors.
-- Jamie
next prev parent reply other threads:[~2008-07-22 15:53 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-03-05 21:18 [Qemu-devel] Signal handling and qcow2 image corruption David Barrett
2008-03-05 21:55 ` Anthony Liguori
2008-03-05 23:48 ` David Barrett
2008-03-06 6:57 ` Avi Kivity
2008-07-21 18:10 ` [Qemu-devel] qcow2 - safe on kill? safe on power fail? Jamie Lokier
2008-07-21 19:43 ` Anthony Liguori
2008-07-21 21:26 ` Jamie Lokier
2008-07-21 22:14 ` Anthony Liguori
2008-07-21 23:47 ` Jamie Lokier
2008-07-22 6:06 ` Avi Kivity
2008-07-22 14:08 ` Anthony Liguori
2008-07-22 14:46 ` Jamie Lokier
2008-07-22 19:11 ` Avi Kivity
2008-07-22 14:32 ` Jamie Lokier
2008-07-21 22:00 ` Andreas Schwab
2008-07-21 22:15 ` Anthony Liguori
2008-07-21 22:22 ` David Barrett
2008-07-21 22:50 ` Anthony Liguori
2008-07-22 6:07 ` Avi Kivity
2008-07-22 14:11 ` Anthony Liguori
2008-07-22 14:36 ` Avi Kivity
2008-07-22 16:16 ` Jamie Lokier [this message]
2008-07-22 19:13 ` Avi Kivity
2008-07-22 20:04 ` Jamie Lokier
2008-07-22 21:25 ` Avi Kivity
2008-07-22 14:22 ` Jamie Lokier
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