Re: [Qemu-devel] hotremoving a disk qmp/hmp

[Markus Armbruster]

William Dauchy <address@hidden> writes:

> Hello,
>
> When hotremoving a disk I'm using the QMP API with device_del command;
>
> Previous query-block command result:
>
> {   u'device': u'disk1',
>     u'inserted': {   u'backing_file_depth': 0,
>                      u'bps': 0,
>                      u'bps_rd': 0,
>                      u'bps_wr': 0,
>                      u'detect_zeroes': u'off',
>                      u'drv': u'raw',
>                      u'encrypted': False,
>                      u'encryption_key_missing': False,
>                      u'file': u'/dev/sda',
>                      u'image': {   u'actual-size': 0,
>                                    u'dirty-flag': False,
>                                    u'filename': u'/dev/sda',
>                                    u'format': u'raw',
>                                    u'virtual-size': 3221225472},
>                      u'iops': 0,
>                      u'iops_rd': 0,
>                      u'iops_wr': 0,
>                      u'ro': False},
>     u'io-status': u'ok',
>     u'locked': True,
>     u'removable': True,
>     u'tray_open': False,
>     u'type': u'unknown'}

This is block backend "disk1".

> After a device_del command I have the same thing but "'locked': False"

I presume you're deleting the device using backend "disk1".

What kind of device is this?  PCI, perhaps?

> Then I can also do `eject device=disk1` which bring me to:
>
> {   u'device': u'disk1',
>                        u'io-status': u'ok',
>                        u'locked': False,
>                        u'removable': True,
>                        u'tray_open': False,
>                        u'type': u'unknown'}
>
> But I did not found a way to completely remove the disk1 entry in order
> to be able to add it again.
> To complete the operation I need to use the old HMP API and use
> `drive_del` command.
>
> Did I miss something? or is it still something missing in QMP API?

Please show us a complete QMP conversation.