Re: [PATCH v0 0/2] allow to set 'drive' property on a realized block device

[Denis Plotnikov <dplotnikov@virtuozzo.com>]

On 02.03.2020 16:38, Kevin Wolf wrote:
> Am 10.11.2019 um 20:03 hat Denis Plotnikov geschrieben:
>> This allows to replace the file on a block device and is useful
>> to workaround the cases (migration) when the VM image is placed on
>> some shared storage with exclusive file opening model but the image
>> should be open form more than one app.
>>
>> The previous version of approaching the workaround was based on the
>> "blockdev-change-medium" command modification but had some flaws:
>>    * semantics: blockdev-change-medium is aimed to be used with removable devices
>>      only
>>    * interface: it can't accept all possible combination of parameters for
>>      the "drive" replacement (creation).
>>
>> More details here: http://patchwork.ozlabs.org/patch/1179329/
>>
>> The current series suggests another approach:
>> 1. blockdev-add
>> 2. qom-set disk.drive = the blockdev added (this is what the series adds)
> Are you still planning to send another version?
>
> Kevin
Not in the near future :) There is an unresolved problem with 
bitmap-migration is case of block dev replacement.
Still don't know how to do it in the proper way.

Denis
>