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Re: [Qemu-devel] [PATCH v3 RFC 0/17] block: persistent dirty bitmaps


From: Vladimir Sementsov-Ogievskiy
Subject: Re: [Qemu-devel] [PATCH v3 RFC 0/17] block: persistent dirty bitmaps
Date: Sat, 5 Sep 2015 20:25:31 +0300
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.8.0

Add feature:

Migration of BdrvDirtyBitmap.file field.

Bitmap 'percistancy' can be migrated only if its(bitmap) storage disk has id and the destination qemu has disk with same id.


Stefan Hajnoczi wrote:
Code might be necessary to ensure that:

1. The source host does not store the bitmap after successful live
    migration handover.  (It could overwrite new data with old data!)

2. The destination host does not discard an "in_use" bitmap when it
    opens the qcow2 file before migration handover.



--
Best regards,
Vladimir
* now, @virtuozzo.com instead of @parallels.com. Sorry for this inconvenience.




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