[libvirt] [PATCH] RFC: Add blockdev-delete QMP command

Eric Blake eblake at redhat.com
Mon Feb 10 17:05:54 UTC 2014


On 02/07/2014 04:15 PM, Ian Main wrote:
> This is the sister command to blockdev-add.  In Fam's example he uses
> the drive_del HMP command to clean up but when trying to do this via
> libvirt it doesn't work.  This command seems to be needed in order to
> perform proper cleanup.
> 
> Signed-off-by: Ian Main <imain at redhat.com>
> ---
>  blockdev.c       | 52 ++++++++++++++++++++++++++++++++++++++--------------
>  qapi-schema.json | 11 +++++++++++
>  qmp-commands.hx  | 30 ++++++++++++++++++++++++++++++
>  3 files changed, 79 insertions(+), 14 deletions(-)
> 

> +SQMP
> +blockdev-delete
> +------------
> +
> +Remove host block device.  The result is that guest generated IO is no

> +Example (1):
> +
> +-> { "execute": "blockdev-snapshot-delete-internal-sync",
> +                "arguments": { "device": "target0" }

Wrong example.

But indeed having the ability to drop things in QMP would be nice.

In RHEL, libvirt is using a downstream __com.redhat_drive_del before
falling back to upstream HMP drive_del, so how does this differ from
drive_del or the RHEL downstream command?

-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org

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