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

[Denis Plotnikov]

Ping!

On 10.11.2019 22:03, Denis Plotnikov wrote:
> 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)
>   
>
> Denis Plotnikov (2):
>    qdev-properties-system: extend set_pionter for unrealized devices
>    block: allow to set 'drive' property on a realized block device
>
>   hw/core/qdev-properties-system.c | 117 +++++++++++++++++++++++++------
>   1 file changed, 96 insertions(+), 21 deletions(-)
>