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Re: [Qemu-devel] Re: qcow2 corruption observed, fixed by reverting old
From: |
Marc Bevand |
Subject: |
Re: [Qemu-devel] Re: qcow2 corruption observed, fixed by reverting old change |
Date: |
Sat, 14 Feb 2009 23:56:58 -0800 |
On Sat, Feb 14, 2009 at 2:28 PM, Dor Laor <address@hidden> wrote:
>
> Both qcow2 and vmdk have the ability to keep 'external' snapshots.
I know but they don't implement one feature I cited: clones, or
"writable snapshots", which I would like implemented with support for
deduplication. Base images / backing files are too limited because
they have to be managed by the enduser and there is no deduplication
done between multiple images based on the same backing file.
> We might use vmdk format or VHD as a base for the future high performing,
> safe image format for qemu
Neither vmdk nor vhd satisfy my requirements: not always consistent on
disk, no possibility of detecting/correcting errors, susceptible to
fragmentation (affects vmdk, not sure about vhd), and possibly others.
Jamie: yes in an ideal world, the storage virtualization layer could
make use of the host's filesystem or block layer snapshotting/cloning
features, but in the real world too few OSes implement these.
-marc
Message not available
- [Qemu-devel] Re: qcow2 corruption observed, fixed by reverting old change, Kevin Wolf, 2009/02/13
- Re: [Qemu-devel] Re: qcow2 corruption observed, fixed by reverting old change, Jamie Lokier, 2009/02/13
- Re: [Qemu-devel] Re: qcow2 corruption observed, fixed by reverting old change, Chris Wright, 2009/02/13
- Re: [Qemu-devel] Re: qcow2 corruption observed, fixed by reverting old change, Marc Bevand, 2009/02/14
- Re: [Qemu-devel] Re: qcow2 corruption observed, fixed by reverting old change, Dor Laor, 2009/02/14
- Re: [Qemu-devel] Re: qcow2 corruption observed, fixed by reverting old change, Jamie Lokier, 2009/02/14
- Re: [Qemu-devel] Re: qcow2 corruption observed, fixed by reverting old change,
Marc Bevand <=
Re: [Qemu-devel] Re: qcow2 corruption observed, fixed by reverting old change, Jamie Lokier, 2009/02/14
[Qemu-devel] Re: qcow2 corruption observed, fixed by reverting old change, Gleb Natapov, 2009/02/15
[Qemu-devel] Re: qcow2 corruption observed, fixed by reverting old change, Marc Bevand, 2009/02/15
[Qemu-devel] Re: qcow2 corruption observed, fixed by reverting old change, Marc Bevand, 2009/02/15