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From: | Dietmar Maurer |
Subject: | Re: [Qemu-devel] [PATCH v3 2/8] block: add basic backup support to block driver |
Date: | Tue, 21 May 2013 16:15:34 +0000 |
> Copy-on-read modifies the topmost image even without changing the content, > just like copy-before-write modifies the backup image. Ah, got it. But this only works if you use a BS as target. This will not work with my old backup driver patches (I am still not convinced about using a BS as backup target)
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