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From: | Anthony Liguori |
Subject: | Re: [Qemu-devel] Re: [RFC] qed: Add QEMU Enhanced Disk format |
Date: | Wed, 15 Sep 2010 16:12:13 -0500 |
User-agent: | Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.12) Gecko/20100826 Lightning/1.0b1 Thunderbird/3.0.7 |
On 09/15/2010 04:01 PM, Michael S. Tsirkin wrote:
On Mon, Sep 06, 2010 at 11:04:38AM +0100, Stefan Hajnoczi wrote:The format supports sparse disk images. It does not rely on the host filesystem holes feature, making it a good choice for sparse disk images that need to be transferred over channels where holes are not supported.Are these so important? Do people really pass VM images around with http?
Absolutely. Part of the problem is that there's an industry expectation that virtual machines are stored in images.
Even when you look at something like VMFS, which is a filesystem designed specifically for virtual machine images, you still use VMDKs on top of VMFS.
Regards, Anthony Liguori
Maybe it's enough to teach scp about sparse files instead.
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