Re: [PATCH] qemu: Support removable for scsi disk

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On 6/5/23 07:07, Han Han wrote:
> Allow //disk/target@removable for scsi disk devices, since QEMU has support
> the removable attribute for scsi-hd device from v0.14.0[1].
> 
> [1]: 419e691f8e: scsi-disk: Allow overriding SCSI INQUIRY removable bit
> 
> Signed-off-by: Han Han <hhan@xxxxxxxxxx>
> ---
>  docs/formatdomain.rst                              |  2 +-
>  src/conf/domain_validate.c                         |  5 +++--
>  src/qemu/qemu_command.c                            |  6 ++++--
>  ...gs => disk-device-removable.x86_64-latest.args} | 14 +++++++++-----
>  ...ice-removable.xml => disk-device-removable.xml} |  5 +++++
>  tests/qemuxml2argvtest.c                           |  2 +-
>  6 files changed, 23 insertions(+), 11 deletions(-)
>  rename tests/qemuxml2argvdata/{disk-usb-device-removable.x86_64-latest.args => disk-device-removable.x86_64-latest.args} (70%)
>  rename tests/qemuxml2argvdata/{disk-usb-device-removable.xml => disk-device-removable.xml} (80%)
> 
> diff --git a/docs/formatdomain.rst b/docs/formatdomain.rst
> index c3526439bf..676e4b9fd3 100644
> --- a/docs/formatdomain.rst
> +++ b/docs/formatdomain.rst
> @@ -3094,7 +3094,7 @@ paravirtualized driver is specified via the ``disk`` element.
>     CDROM or Floppy disk), the value can be either "open" or "closed", defaults
>     to "closed". NB, the value of ``tray`` could be updated while the domain is
>     running. The optional attribute ``removable`` sets the removable flag for USB
> -   disks, and its value can be either "on" or "off", defaulting to "off".
> +   or SCSI disks, and its value can be either "on" or "off", defaulting to "off".
>     The optional attribute ``rotation_rate`` sets the rotation rate of the
>     storage for disks on a SCSI, IDE, or SATA bus. Values in the range 1025 to
>     65534 are used to indicate rotational media speed in revolutions per minute.
> diff --git a/src/conf/domain_validate.c b/src/conf/domain_validate.c
> index 80d6a2ffd9..e7122f6297 100644
> --- a/src/conf/domain_validate.c
> +++ b/src/conf/domain_validate.c
> @@ -881,9 +881,10 @@ virDomainDiskDefValidate(const virDomainDef *def,
>      }
>  
>      if (disk->removable != VIR_TRISTATE_SWITCH_ABSENT &&
> -        disk->bus != VIR_DOMAIN_DISK_BUS_USB) {
> +        disk->bus != VIR_DOMAIN_DISK_BUS_USB &&
> +        !(disk->bus == VIR_DOMAIN_DISK_BUS_SCSI && disk->device == VIR_DOMAIN_DISK_DEVICE_DISK)) {

This is a long long line and could be split into two.

>          virReportError(VIR_ERR_XML_ERROR, "%s",
> -                       _("removable is only valid for usb disks"));
> +                       _("removable is only valid for usb or scsi disks"));
>          return -1;
>      }
>  

The rest looks okay. I'd merge this but it's a feature and we're
currently in the freeze, preparing for upcoming release (i.e. only bug
fixes should be merged). I'll merge this after the release.

Reviewed-by: Michal Privoznik <mprivozn@xxxxxxxxxx>

Michal




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