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Re: [Qemu-devel] [RFC 0/8] block: Live backup prototype
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From: |
Dietmar Maurer |
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Subject: |
Re: [Qemu-devel] [RFC 0/8] block: Live backup prototype |
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Date: |
Tue, 9 Apr 2013 15:34:54 +0000 |
> > Is there already a plan to support the differential or incremental
> > backups in
> this Live backup feature?
>
> No, it has been mentioned but no design or patches have been proposed.
>
> It seems like a persistent dirty bitmap would need to be implemented.
> Today QEMU has code for dirty bitmaps but they are in-memory and not
> persistent.
Another possibility is to use some kind of content addressable storage. That way
we can have full backups with space consumption of incremental backups.