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Re: [Qemu-devel] PATCH: Support for multi-file raw images
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From: |
Ryan Lortie |
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Subject: |
Re: [Qemu-devel] PATCH: Support for multi-file raw images |
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Date: |
Fri, 12 May 2006 17:45:12 -0400 |
On Fri, 2006-12-05 at 22:21 +0200, Flavio Visentin wrote:
> OT for qemu, but if you use *rsync*, then only the changed part of the
> file are copied, not all the file. Rsync was written just for this
> reason, to avoid copying unneccessary unchanged data.
But as soon as the modification stamp changes rsync still needs to scan
the entire 20GB file to determine what part has changed. With two
separate drives on a local system this takes exactly as long as just
copying the entire file.
Cheers