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Re: [Qemu-devel] [PATCH 28/47] qmp: add drive-mirror command
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From: |
Paolo Bonzini |
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Subject: |
Re: [Qemu-devel] [PATCH 28/47] qmp: add drive-mirror command |
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Date: |
Thu, 13 Sep 2012 15:38:17 +0200 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:15.0) Gecko/20120828 Thunderbird/15.0 |
Il 13/09/2012 15:26, Kevin Wolf ha scritto:
>>>>> + flags = bs->open_flags | BDRV_O_RDWR;
>>> >> Do we take care to make the image read-only again after completion?
>> >
>> > Not at the file-descriptor level, but bs->read_only is indeed restored
>> > to "true" via bdrv_swap.
>> >
>> > Doing it on the file descriptor is possible with Jeff's bdrv_reopen
>> > patches.
> Ah, right, obviously you can't do it before Jeff's patches are in. But
> yes, this is what I meant.
Still, the guest won't be able to issue writes after switching to the
destination, if it couldn't do so before.
Paolo