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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 15:25:21 +0000 |
> Hmm, right. But do we need the bitmap at all? We can just use > bdrv_is_allocated like bdrv_co_do_readv does. If a write occur, we read and backup that cluster immediately (out of order). So I am quite sure we need the bitmap.
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