[libvirt] [PATCH v3] qemu: Split scsi-disk into into scsi-hd and scsi-cd
Osier Yang
jyang at redhat.com
Tue Apr 17 09:11:31 UTC 2012
A "scsi-disk" device can be either a hard disk or a CD-ROM,
if there is ",media=cdrom" specified for the backend, it's
a CD-ROM, otherwise it's a hard disk.
But upstream qemu splitted "scsi-disk" into "scsi-hd" and
"scsi-cd" since commit b443ae, and ",media=cdrom" is not
required for scsi-cd anymore. "scsi-disk" is still supported
for backwards compatibility, but no doubt we should go
foward.
---
No changes between v1 and v3, just rebasing. v2 missed
the test XMLs.
---
src/qemu/qemu_capabilities.c | 3 +
src/qemu/qemu_capabilities.h | 1 +
src/qemu/qemu_command.c | 39 ++++++++++++++----
tests/qemuhelptest.c | 6 ++-
.../qemuxml2argv-disk-scsi-disk-split.args | 16 +++++++
.../qemuxml2argv-disk-scsi-disk-split.xml | 44 ++++++++++++++++++++
tests/qemuxml2argvtest.c | 3 +
7 files changed, 102 insertions(+), 10 deletions(-)
create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-disk-scsi-disk-split.args
create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-disk-scsi-disk-split.xml
diff --git a/src/qemu/qemu_capabilities.c b/src/qemu/qemu_capabilities.c
index fd4ca4d..4e22f3e8 100644
--- a/src/qemu/qemu_capabilities.c
+++ b/src/qemu/qemu_capabilities.c
@@ -159,6 +159,7 @@ VIR_ENUM_IMPL(qemuCaps, QEMU_CAPS_LAST,
"block-job-sync", /* 90 */
"block-job-async",
+ "scsi-cd",
);
struct qemu_feature_flags {
@@ -1451,6 +1452,8 @@ qemuCapsParseDeviceStr(const char *str, virBitmapPtr flags)
qemuCapsSet(flags, QEMU_CAPS_SCSI_DISK_CHANNEL);
if (strstr(str, "scsi-block"))
qemuCapsSet(flags, QEMU_CAPS_SCSI_BLOCK);
+ if (strstr(str, "scsi-cd"))
+ qemuCapsSet(flags, QEMU_CAPS_SCSI_CD);
return 0;
}
diff --git a/src/qemu/qemu_capabilities.h b/src/qemu/qemu_capabilities.h
index 6550d59..2aba502 100644
--- a/src/qemu/qemu_capabilities.h
+++ b/src/qemu/qemu_capabilities.h
@@ -126,6 +126,7 @@ enum qemuCapsFlags {
QEMU_CAPS_TRANSACTION = 89, /* transaction monitor command */
QEMU_CAPS_BLOCKJOB_SYNC = 90, /* RHEL 6.2 block_job_cancel */
QEMU_CAPS_BLOCKJOB_ASYNC = 91, /* qemu 1.1 block-job-cancel */
+ QEMU_CAPS_SCSI_CD = 92, /* -device scsi-cd */
QEMU_CAPS_LAST, /* this must always be the last item */
};
diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index c82f5bc..ff82b26 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -1978,8 +1978,14 @@ qemuBuildDriveStr(virConnectPtr conn ATTRIBUTE_UNUSED,
else
virBufferAsprintf(&opt, "if=%s", bus);
- if (disk->device == VIR_DOMAIN_DISK_DEVICE_CDROM)
- virBufferAddLit(&opt, ",media=cdrom");
+ if (disk->device == VIR_DOMAIN_DISK_DEVICE_CDROM) {
+ if ((disk->bus == VIR_DOMAIN_DISK_BUS_SCSI)) {
+ if (!qemuCapsGet(qemuCaps, QEMU_CAPS_SCSI_CD))
+ virBufferAddLit(&opt, ",media=cdrom");
+ } else {
+ virBufferAddLit(&opt, ",media=cdrom");
+ }
+ }
if (qemuCapsGet(qemuCaps, QEMU_CAPS_DEVICE)) {
virBufferAsprintf(&opt, ",id=%s%s", QEMU_DRIVE_HOST_PREFIX, disk->info.alias);
@@ -2229,10 +2235,19 @@ qemuBuildDriveDevStr(virDomainDefPtr def,
goto error;
}
- if (disk->device == VIR_DOMAIN_DISK_DEVICE_LUN)
+ if (disk->device == VIR_DOMAIN_DISK_DEVICE_LUN) {
virBufferAddLit(&opt, "scsi-block");
- else
- virBufferAddLit(&opt, "scsi-disk");
+ } else {
+ if (qemuCapsGet(qemuCaps, QEMU_CAPS_SCSI_CD)) {
+ if (disk->device == VIR_DOMAIN_DISK_DEVICE_CDROM)
+ virBufferAddLit(&opt, "scsi-cd");
+ else
+ virBufferAddLit(&opt, "scsi-hd");
+ } else {
+ virBufferAddLit(&opt, "scsi-disk");
+ }
+ }
+
virBufferAsprintf(&opt, ",bus=scsi%d.%d,scsi-id=%d",
disk->info.addr.drive.controller,
disk->info.addr.drive.bus,
@@ -2255,10 +2270,18 @@ qemuBuildDriveDevStr(virDomainDefPtr def,
}
}
- if (disk->device != VIR_DOMAIN_DISK_DEVICE_LUN)
- virBufferAddLit(&opt, "scsi-disk");
- else
+ if (disk->device != VIR_DOMAIN_DISK_DEVICE_LUN) {
+ if (qemuCapsGet(qemuCaps, QEMU_CAPS_SCSI_CD)) {
+ if (disk->device == VIR_DOMAIN_DISK_DEVICE_CDROM)
+ virBufferAddLit(&opt, "scsi-cd");
+ else
+ virBufferAddLit(&opt, "scsi-hd");
+ } else {
+ virBufferAddLit(&opt, "scsi-disk");
+ }
+ } else {
virBufferAddLit(&opt, "scsi-block");
+ }
virBufferAsprintf(&opt, ",bus=scsi%d.0,channel=%d,scsi-id=%d,lun=%d",
disk->info.addr.drive.controller,
diff --git a/tests/qemuhelptest.c b/tests/qemuhelptest.c
index 05fdc4d..a01c389 100644
--- a/tests/qemuhelptest.c
+++ b/tests/qemuhelptest.c
@@ -605,7 +605,8 @@ mymain(void)
QEMU_CAPS_VIRTIO_BLK_SCSI,
QEMU_CAPS_VIRTIO_BLK_SG_IO,
QEMU_CAPS_DRIVE_COPY_ON_READ,
- QEMU_CAPS_CPU_HOST);
+ QEMU_CAPS_CPU_HOST,
+ QEMU_CAPS_SCSI_CD);
DO_TEST("qemu-1.0", 1000000, 0, 0,
QEMU_CAPS_VNC_COLON,
QEMU_CAPS_NO_REBOOT,
@@ -674,7 +675,8 @@ mymain(void)
QEMU_CAPS_VIRTIO_BLK_SG_IO,
QEMU_CAPS_CPU_HOST,
QEMU_CAPS_FSDEV_WRITEOUT,
- QEMU_CAPS_SCSI_BLOCK);
+ QEMU_CAPS_SCSI_BLOCK,
+ QEMU_CAPS_SCSI_CD);
return ret == 0 ? EXIT_SUCCESS : EXIT_FAILURE;
}
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-disk-scsi-disk-split.args b/tests/qemuxml2argvdata/qemuxml2argv-disk-scsi-disk-split.args
new file mode 100644
index 0000000..a79299a
--- /dev/null
+++ b/tests/qemuxml2argvdata/qemuxml2argv-disk-scsi-disk-split.args
@@ -0,0 +1,16 @@
+LC_ALL=C PATH=/bin HOME=/home/test USER=test LOGNAME=test \
+/usr/bin/qemu -S -M pc -m 214 -smp 1 -nographic -nodefconfig -nodefaults \
+-monitor unix:/tmp/test-monitor,server,nowait -no-acpi -boot c \
+-device virtio-scsi-pci,id=scsi0,bus=pci.0,addr=0x3 \
+-device lsi,id=scsi1,bus=pci.0,addr=0x4 \
+-device lsi,id=scsi2,bus=pci.0,addr=0x5 \
+-device virtio-scsi-pci,id=scsi3,bus=pci.0,addr=0x6 \
+-drive file=/dev/HostVG/QEMUGuest1,if=none,id=drive-scsi0-0-1-0 \
+-device scsi-cd,bus=scsi0.0,channel=0,scsi-id=1,lun=0,drive=drive-scsi0-0-1-0,id=scsi0-0-1-0 \
+-drive file=/dev/HostVG/QEMUGuest2,if=none,id=drive-scsi0-0-0-0 \
+-device scsi-cd,bus=scsi0.0,channel=0,scsi-id=0,lun=0,drive=drive-scsi0-0-0-0,id=scsi0-0-0-0 \
+-drive file=/tmp/scsidisk.img,if=none,id=drive-scsi0-0-0-1 \
+-device scsi-hd,bus=scsi0.0,channel=0,scsi-id=0,lun=1,drive=drive-scsi0-0-0-1,id=scsi0-0-0-1 \
+-drive file=/tmp/scsidisk.img,if=none,id=drive-scsi0-0-1-1 \
+-device scsi-hd,bus=scsi0.0,channel=0,scsi-id=1,lun=1,drive=drive-scsi0-0-1-1,id=scsi0-0-1-1 \
+-usb -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x7
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-disk-scsi-disk-split.xml b/tests/qemuxml2argvdata/qemuxml2argv-disk-scsi-disk-split.xml
new file mode 100644
index 0000000..02181fd
--- /dev/null
+++ b/tests/qemuxml2argvdata/qemuxml2argv-disk-scsi-disk-split.xml
@@ -0,0 +1,44 @@
+<domain type='qemu'>
+ <name>QEMUGuest1</name>
+ <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
+ <memory unit='KiB'>219136</memory>
+ <currentMemory unit='KiB'>219136</currentMemory>
+ <vcpu>1</vcpu>
+ <os>
+ <type arch='i686' machine='pc'>hvm</type>
+ <boot dev='hd'/>
+ </os>
+ <clock offset='utc'/>
+ <on_poweroff>destroy</on_poweroff>
+ <on_reboot>restart</on_reboot>
+ <on_crash>destroy</on_crash>
+ <devices>
+ <emulator>/usr/bin/qemu</emulator>
+ <disk type='block' device='cdrom'>
+ <source dev='/dev/HostVG/QEMUGuest1'/>
+ <target dev='sda' bus='scsi'/>
+ <address type='drive' controller='0' bus='0' target='1' unit='0'/>
+ </disk>
+ <disk type='block' device='cdrom'>
+ <source dev='/dev/HostVG/QEMUGuest2'/>
+ <target dev='sda' bus='scsi'/>
+ <address type='drive' controller='0' bus='0' target='0' unit='0'/>
+ </disk>
+ <disk type='file' device='disk'>
+ <source file='/tmp/scsidisk.img'/>
+ <target dev='sdc' bus='scsi'/>
+ <address type='drive' controller='0' bus='0' target='0' unit='1'/>
+ </disk>
+ <disk type='file' device='disk'>
+ <source file='/tmp/scsidisk.img'/>
+ <target dev='sdd' bus='scsi'/>
+ <address type='drive' controller='0' bus='0' target='1' unit='1'/>
+ </disk>
+ <controller type='usb' index='0'/>
+ <controller type='scsi' index='0' model='virtio-scsi'/>
+ <controller type='scsi' index='1' model='lsilogic'/>
+ <controller type='scsi' index='2' model='lsilogic'/>
+ <controller type='scsi' index='3' model='virtio-scsi'/>
+ <memballoon model='virtio'/>
+ </devices>
+</domain>
diff --git a/tests/qemuxml2argvtest.c b/tests/qemuxml2argvtest.c
index fdbe95a..cc1ac44 100644
--- a/tests/qemuxml2argvtest.c
+++ b/tests/qemuxml2argvtest.c
@@ -463,6 +463,9 @@ mymain(void)
QEMU_CAPS_DRIVE, QEMU_CAPS_DEVICE, QEMU_CAPS_NODEFCONFIG);
DO_TEST("disk-scsi-device-auto", false,
QEMU_CAPS_DRIVE, QEMU_CAPS_DEVICE, QEMU_CAPS_NODEFCONFIG);
+ DO_TEST("disk-scsi-disk-split", false,
+ QEMU_CAPS_DRIVE, QEMU_CAPS_DEVICE, QEMU_CAPS_NODEFCONFIG,
+ QEMU_CAPS_SCSI_CD);
DO_TEST("disk-scsi-vscsi", false,
QEMU_CAPS_DRIVE, QEMU_CAPS_DEVICE, QEMU_CAPS_NODEFCONFIG);
DO_TEST("disk-scsi-virtio-scsi", false,
--
1.7.7.3
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