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Re: [Qemu-devel] [RFC V3 00/24] QCOW2 deduplication
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From: |
Benoît Canet |
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Subject: |
Re: [Qemu-devel] [RFC V3 00/24] QCOW2 deduplication |
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Date: |
Mon, 24 Dec 2012 13:26:38 +0100 |
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User-agent: |
Mutt/1.5.21 (2010-09-15) |
> Yes, it's the same problem that copy-on-read has. We can serialize I/O
> requests, if necessary, in order to prevent them racing with each other.
My current patchset have a big dedup_lock co mutex.
I'll replace it with the overlapping request solution.
> Where do you see an issue - do you think the refcount manipulations
> you're doing for dedup might conflict with internal snapshots?
Ok,
Anyway it seems to pass the savevm tests.
Benoît