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Re: [Qemu-devel] Re: [PATCH][v2] Align file accesses with cache=off (O_D
From: |
Paul Brook |
Subject: |
Re: [Qemu-devel] Re: [PATCH][v2] Align file accesses with cache=off (O_DIRECT) |
Date: |
Tue, 20 May 2008 23:52:17 +0100 |
User-agent: |
KMail/1.9.9 |
> When sector-aligned guest offsets are converted to sector-unaligned
> writes (e.g. due to qcow2 etc.), that property is no longer satisfied,
> and power failure of the host disk can cause more damage than the
> guest is designed to be resistant to.
Seems like the easiest solution would be to have qcow always align its writes.
We don't do on the fly compression, so it should be fairly easy to make this
happen with minimal overhead.
Paul
- [Qemu-devel] [PATCH][v2] Align file accesses with cache=off (O_DIRECT), Laurent Vivier, 2008/05/20
- [Qemu-devel] Re: [PATCH][v2] Align file accesses with cache=off (O_DIRECT), Anthony Liguori, 2008/05/20
- Re: [Qemu-devel] Re: [PATCH][v2] Align file accesses with cache=off (O_DIRECT), Anthony Liguori, 2008/05/20
- Re: [Qemu-devel] Re: [PATCH][v2] Align file accesses with cache=off (O_DIRECT), Jamie Lokier, 2008/05/20
- Re: [Qemu-devel] Re: [PATCH][v2] Align file accesses with cache=off (O_DIRECT), Anthony Liguori, 2008/05/20
- Re: [Qemu-devel] Re: [PATCH][v2] Align file accesses with cache=off (O_DIRECT), Kevin Wolf, 2008/05/21
- Re: [Qemu-devel] Re: [PATCH][v2] Align file accesses with cache=off (O_DIRECT), Paul Brook, 2008/05/20
- Re: [Qemu-devel] Re: [PATCH][v2] Align file accesses with cache=off (O_DIRECT), Anthony Liguori, 2008/05/20
- Re: [Qemu-devel] Re: [PATCH][v2] Align file accesses with cache=off (O_DIRECT), Kevin Wolf, 2008/05/21