diff options
| author | Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> | 2011-01-24 15:35:01 +0000 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2011-01-24 21:39:22 +0100 |
| commit | a5c062edd272a222179c2bbf54c539c992aefc93 (patch) | |
| tree | bbce4add6ecab7ad4b90d98f58c1e29bb65b7977 /docs/qdev-device-use.txt | |
| parent | 6bb7b86722c6cc772f66cdc7923dec56e8458c29 (diff) | |
docs: Document scsi-disk and usb-storage removable parameter
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'docs/qdev-device-use.txt')
| -rw-r--r-- | docs/qdev-device-use.txt | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/docs/qdev-device-use.txt b/docs/qdev-device-use.txt index f2f9b757a5..4bb2be8850 100644 --- a/docs/qdev-device-use.txt +++ b/docs/qdev-device-use.txt @@ -80,7 +80,11 @@ The -device argument differs in detail for each kind of drive: This SCSI controller a single SCSI bus, named ID.0. Put a disk on it: - -device scsi-disk,drive=DRIVE-ID,bus=ID.0,scsi-id=SCSI-ID + -device scsi-disk,drive=DRIVE-ID,bus=ID.0,scsi-id=SCSI-ID,removable=RMB + + The (optional) removable parameter lets you override the SCSI INQUIRY + removable (RMB) bit for non CD-ROM devices. It is ignored for CD-ROM devices + which are always removable. RMB is "on" or "off". * if=floppy @@ -116,7 +120,12 @@ For USB devices, the old way is actually different: Provides much less control than -drive's HOST-OPTS... The new way fixes that: - -device usb-storage,drive=DRIVE-ID + -device usb-storage,drive=DRIVE-ID,removable=RMB + +The removable parameter gives control over the SCSI INQUIRY removable (RMB) +bit. USB thumbdrives usually set removable=on, while USB hard disks set +removable=off. See the if=scsi description above for details on the removable +parameter, which applies only to scsi-disk devices and not to scsi-generic. === Character Devices === |