1
0
mirror of https://gitlab.com/libvirt/libvirt.git synced 2025-03-07 17:28:15 +00:00

qemu: Assume QEMU_CAPS_DISK_WRITE_CACHE

Introduced in QEMU's commit of v2.7.0-rc0~32^2~5 the .write-cache
attribute of virtio-blk dvice is always available for all QEMU
versions we support (4.2.0, currently). Therefore, we can assume
the capability is always set and thus doesn't need to be checked
for.

The change in some .args is justified, because the qemuxml2argvdatatest
runs these test caseses with very minimalistic set of capabilities,
that's nowhere near real life scenario.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This commit is contained in:
Michal Privoznik 2022-11-08 08:40:07 +01:00
parent e2927db185
commit f28807a1e0
14 changed files with 14 additions and 15 deletions

View File

@ -1900,8 +1900,7 @@ qemuBuildDiskDeviceProps(const virDomainDef *def,
if (disk->cachemode != VIR_DOMAIN_DISK_CACHE_DEFAULT) { if (disk->cachemode != VIR_DOMAIN_DISK_CACHE_DEFAULT) {
/* VIR_DOMAIN_DISK_DEVICE_LUN translates into 'scsi-block' /* VIR_DOMAIN_DISK_DEVICE_LUN translates into 'scsi-block'
* where any caching setting makes no sense. */ * where any caching setting makes no sense. */
if (disk->device != VIR_DOMAIN_DISK_DEVICE_LUN && if (disk->device != VIR_DOMAIN_DISK_DEVICE_LUN) {
virQEMUCapsGet(qemuCaps, QEMU_CAPS_DISK_WRITE_CACHE)) {
bool wb; bool wb;
if (qemuDomainDiskCachemodeFlags(disk->cachemode, &wb, NULL, if (qemuDomainDiskCachemodeFlags(disk->cachemode, &wb, NULL,

View File

@ -29,7 +29,7 @@ XDG_CONFIG_HOME=/tmp/lib/domain--1-fdr/.config \
-device usb-ccid,id=ccid0,bus=usb.0,port=1.1 \ -device usb-ccid,id=ccid0,bus=usb.0,port=1.1 \
-blockdev '{"driver":"file","filename":"/tmp/fdr.img","aio":"native","node-name":"libvirt-2-storage","cache":{"direct":true,"no-flush":false},"auto-read-only":true,"discard":"unmap"}' \ -blockdev '{"driver":"file","filename":"/tmp/fdr.img","aio":"native","node-name":"libvirt-2-storage","cache":{"direct":true,"no-flush":false},"auto-read-only":true,"discard":"unmap"}' \
-blockdev '{"node-name":"libvirt-2-format","read-only":false,"cache":{"direct":true,"no-flush":false},"driver":"raw","file":"libvirt-2-storage"}' \ -blockdev '{"node-name":"libvirt-2-format","read-only":false,"cache":{"direct":true,"no-flush":false},"driver":"raw","file":"libvirt-2-storage"}' \
-device virtio-blk-pci,bus=pci.0,addr=0x5,share-rw=on,drive=libvirt-2-format,id=virtio-disk0,bootindex=1 \ -device virtio-blk-pci,bus=pci.0,addr=0x5,share-rw=on,drive=libvirt-2-format,id=virtio-disk0,bootindex=1,write-cache=on \
-blockdev '{"driver":"file","filename":"/tmp/Fedora-17-x86_64-Live-Desktop.iso","node-name":"libvirt-1-storage","auto-read-only":true,"discard":"unmap"}' \ -blockdev '{"driver":"file","filename":"/tmp/Fedora-17-x86_64-Live-Desktop.iso","node-name":"libvirt-1-storage","auto-read-only":true,"discard":"unmap"}' \
-blockdev '{"node-name":"libvirt-1-format","read-only":true,"driver":"raw","file":"libvirt-1-storage"}' \ -blockdev '{"node-name":"libvirt-1-format","read-only":true,"driver":"raw","file":"libvirt-1-storage"}' \
-device ide-cd,bus=ide.1,unit=0,drive=libvirt-1-format,id=ide0-1-0 \ -device ide-cd,bus=ide.1,unit=0,drive=libvirt-1-format,id=ide0-1-0 \

View File

@ -27,7 +27,7 @@ XDG_CONFIG_HOME=/tmp/lib/domain--1-QEMUGuest1/.config \
-usb \ -usb \
-blockdev '{"driver":"file","filename":"/var/lib/libvirt/images/QEMUGuest1","node-name":"libvirt-1-storage","cache":{"direct":true,"no-flush":false},"auto-read-only":true,"discard":"unmap"}' \ -blockdev '{"driver":"file","filename":"/var/lib/libvirt/images/QEMUGuest1","node-name":"libvirt-1-storage","cache":{"direct":true,"no-flush":false},"auto-read-only":true,"discard":"unmap"}' \
-blockdev '{"node-name":"libvirt-1-format","read-only":false,"cache":{"direct":true,"no-flush":false},"driver":"qcow2","file":"libvirt-1-storage"}' \ -blockdev '{"node-name":"libvirt-1-format","read-only":false,"cache":{"direct":true,"no-flush":false},"driver":"qcow2","file":"libvirt-1-storage"}' \
-device ide-hd,bus=ide.0,unit=0,drive=libvirt-1-format,id=ide0-0-0,bootindex=1 \ -device ide-hd,bus=ide.0,unit=0,drive=libvirt-1-format,id=ide0-0-0,bootindex=1,write-cache=on \
-audiodev '{"id":"audio1","driver":"none"}' \ -audiodev '{"id":"audio1","driver":"none"}' \
-vnc 127.0.0.1:0,audiodev=audio1 \ -vnc 127.0.0.1:0,audiodev=audio1 \
-device qxl-vga,id=video0,max_outputs=1,ram_size=67108864,vram_size=67108864,bus=pci.0,addr=0x3 \ -device qxl-vga,id=video0,max_outputs=1,ram_size=67108864,vram_size=67108864,bus=pci.0,addr=0x3 \

View File

@ -28,7 +28,7 @@ XDG_CONFIG_HOME=/tmp/lib/domain--1-QEMUGuest1/.config \
-usb \ -usb \
-blockdev '{"driver":"file","filename":"/var/lib/libvirt/images/QEMUGuest1","node-name":"libvirt-1-storage","cache":{"direct":true,"no-flush":false},"auto-read-only":true,"discard":"unmap"}' \ -blockdev '{"driver":"file","filename":"/var/lib/libvirt/images/QEMUGuest1","node-name":"libvirt-1-storage","cache":{"direct":true,"no-flush":false},"auto-read-only":true,"discard":"unmap"}' \
-blockdev '{"node-name":"libvirt-1-format","read-only":false,"cache":{"direct":true,"no-flush":false},"driver":"qcow2","file":"libvirt-1-storage"}' \ -blockdev '{"node-name":"libvirt-1-format","read-only":false,"cache":{"direct":true,"no-flush":false},"driver":"qcow2","file":"libvirt-1-storage"}' \
-device ide-hd,bus=ide.0,unit=0,drive=libvirt-1-format,id=ide0-0-0,bootindex=1 \ -device ide-hd,bus=ide.0,unit=0,drive=libvirt-1-format,id=ide0-0-0,bootindex=1,write-cache=on \
-audiodev '{"id":"audio1","driver":"none"}' \ -audiodev '{"id":"audio1","driver":"none"}' \
-device qxl-vga,id=video0,max_outputs=1,ram_size=67108864,vram_size=67108864,vgamem_mb=16,bus=pci.0,addr=0x2 \ -device qxl-vga,id=video0,max_outputs=1,ram_size=67108864,vram_size=67108864,vgamem_mb=16,bus=pci.0,addr=0x2 \
-device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3 \ -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3 \

View File

@ -28,7 +28,7 @@ XDG_CONFIG_HOME=/tmp/lib/domain--1-QEMUGuest1/.config \
-usb \ -usb \
-blockdev '{"driver":"file","filename":"/var/lib/libvirt/images/QEMUGuest1","node-name":"libvirt-1-storage","cache":{"direct":true,"no-flush":false},"auto-read-only":true,"discard":"unmap"}' \ -blockdev '{"driver":"file","filename":"/var/lib/libvirt/images/QEMUGuest1","node-name":"libvirt-1-storage","cache":{"direct":true,"no-flush":false},"auto-read-only":true,"discard":"unmap"}' \
-blockdev '{"node-name":"libvirt-1-format","read-only":false,"cache":{"direct":true,"no-flush":false},"driver":"qcow2","file":"libvirt-1-storage"}' \ -blockdev '{"node-name":"libvirt-1-format","read-only":false,"cache":{"direct":true,"no-flush":false},"driver":"qcow2","file":"libvirt-1-storage"}' \
-device ide-hd,bus=ide.0,unit=0,drive=libvirt-1-format,id=ide0-0-0,bootindex=1 \ -device ide-hd,bus=ide.0,unit=0,drive=libvirt-1-format,id=ide0-0-0,bootindex=1,write-cache=on \
-audiodev '{"id":"audio1","driver":"none"}' \ -audiodev '{"id":"audio1","driver":"none"}' \
-device qxl-vga,id=video0,max_outputs=1,ram_size=67108864,vram_size=67108864,bus=pci.0,addr=0x2 \ -device qxl-vga,id=video0,max_outputs=1,ram_size=67108864,vram_size=67108864,bus=pci.0,addr=0x2 \
-device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3 \ -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3 \

View File

@ -28,7 +28,7 @@ XDG_CONFIG_HOME=/tmp/lib/domain--1-QEMUGuest1/.config \
-usb \ -usb \
-blockdev '{"driver":"file","filename":"/var/lib/libvirt/images/QEMUGuest1","node-name":"libvirt-1-storage","cache":{"direct":true,"no-flush":false},"auto-read-only":true,"discard":"unmap"}' \ -blockdev '{"driver":"file","filename":"/var/lib/libvirt/images/QEMUGuest1","node-name":"libvirt-1-storage","cache":{"direct":true,"no-flush":false},"auto-read-only":true,"discard":"unmap"}' \
-blockdev '{"node-name":"libvirt-1-format","read-only":false,"cache":{"direct":true,"no-flush":false},"driver":"qcow2","file":"libvirt-1-storage"}' \ -blockdev '{"node-name":"libvirt-1-format","read-only":false,"cache":{"direct":true,"no-flush":false},"driver":"qcow2","file":"libvirt-1-storage"}' \
-device ide-hd,bus=ide.0,unit=0,drive=libvirt-1-format,id=ide0-0-0,bootindex=1 \ -device ide-hd,bus=ide.0,unit=0,drive=libvirt-1-format,id=ide0-0-0,bootindex=1,write-cache=on \
-audiodev '{"id":"audio1","driver":"none"}' \ -audiodev '{"id":"audio1","driver":"none"}' \
-device qxl-vga,id=video0,max_outputs=1,ram_size=67108864,vram_size=67108864,vgamem_mb=16,bus=pci.0,addr=0x2 \ -device qxl-vga,id=video0,max_outputs=1,ram_size=67108864,vram_size=67108864,vgamem_mb=16,bus=pci.0,addr=0x2 \
-device qxl,id=video1,max_outputs=1,ram_size=67108864,vram_size=67108864,vgamem_mb=16,bus=pci.0,addr=0x4 \ -device qxl,id=video1,max_outputs=1,ram_size=67108864,vram_size=67108864,vgamem_mb=16,bus=pci.0,addr=0x4 \

View File

@ -28,7 +28,7 @@ XDG_CONFIG_HOME=/tmp/lib/domain--1-QEMUGuest1/.config \
-usb \ -usb \
-blockdev '{"driver":"file","filename":"/var/lib/libvirt/images/QEMUGuest1","node-name":"libvirt-1-storage","cache":{"direct":true,"no-flush":false},"auto-read-only":true,"discard":"unmap"}' \ -blockdev '{"driver":"file","filename":"/var/lib/libvirt/images/QEMUGuest1","node-name":"libvirt-1-storage","cache":{"direct":true,"no-flush":false},"auto-read-only":true,"discard":"unmap"}' \
-blockdev '{"node-name":"libvirt-1-format","read-only":false,"cache":{"direct":true,"no-flush":false},"driver":"qcow2","file":"libvirt-1-storage"}' \ -blockdev '{"node-name":"libvirt-1-format","read-only":false,"cache":{"direct":true,"no-flush":false},"driver":"qcow2","file":"libvirt-1-storage"}' \
-device ide-hd,bus=ide.0,unit=0,drive=libvirt-1-format,id=ide0-0-0,bootindex=1 \ -device ide-hd,bus=ide.0,unit=0,drive=libvirt-1-format,id=ide0-0-0,bootindex=1,write-cache=on \
-audiodev '{"id":"audio1","driver":"none"}' \ -audiodev '{"id":"audio1","driver":"none"}' \
-device qxl-vga,id=video0,max_outputs=1,ram_size=67108864,vram_size=67108864,bus=pci.0,addr=0x2 \ -device qxl-vga,id=video0,max_outputs=1,ram_size=67108864,vram_size=67108864,bus=pci.0,addr=0x2 \
-device qxl,id=video1,max_outputs=1,ram_size=67108864,vram_size=67108864,bus=pci.0,addr=0x4 \ -device qxl,id=video1,max_outputs=1,ram_size=67108864,vram_size=67108864,bus=pci.0,addr=0x4 \

View File

@ -28,7 +28,7 @@ XDG_CONFIG_HOME=/tmp/lib/domain--1-QEMUGuest1/.config \
-usb \ -usb \
-blockdev '{"driver":"file","filename":"/var/lib/libvirt/images/QEMUGuest1","node-name":"libvirt-1-storage","cache":{"direct":true,"no-flush":false},"auto-read-only":true,"discard":"unmap"}' \ -blockdev '{"driver":"file","filename":"/var/lib/libvirt/images/QEMUGuest1","node-name":"libvirt-1-storage","cache":{"direct":true,"no-flush":false},"auto-read-only":true,"discard":"unmap"}' \
-blockdev '{"node-name":"libvirt-1-format","read-only":false,"cache":{"direct":true,"no-flush":false},"driver":"qcow2","file":"libvirt-1-storage"}' \ -blockdev '{"node-name":"libvirt-1-format","read-only":false,"cache":{"direct":true,"no-flush":false},"driver":"qcow2","file":"libvirt-1-storage"}' \
-device ide-hd,bus=ide.0,unit=0,drive=libvirt-1-format,id=ide0-0-0,bootindex=1 \ -device ide-hd,bus=ide.0,unit=0,drive=libvirt-1-format,id=ide0-0-0,bootindex=1,write-cache=on \
-audiodev '{"id":"audio1","driver":"none"}' \ -audiodev '{"id":"audio1","driver":"none"}' \
-device VGA,id=video0,vgamem_mb=16,bus=pci.0,addr=0x2 \ -device VGA,id=video0,vgamem_mb=16,bus=pci.0,addr=0x2 \
-device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3 \ -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3 \

View File

@ -28,7 +28,7 @@ XDG_CONFIG_HOME=/tmp/lib/domain--1-QEMUGuest1/.config \
-usb \ -usb \
-blockdev '{"driver":"file","filename":"/var/lib/libvirt/images/QEMUGuest1","node-name":"libvirt-1-storage","cache":{"direct":true,"no-flush":false},"auto-read-only":true,"discard":"unmap"}' \ -blockdev '{"driver":"file","filename":"/var/lib/libvirt/images/QEMUGuest1","node-name":"libvirt-1-storage","cache":{"direct":true,"no-flush":false},"auto-read-only":true,"discard":"unmap"}' \
-blockdev '{"node-name":"libvirt-1-format","read-only":false,"cache":{"direct":true,"no-flush":false},"driver":"qcow2","file":"libvirt-1-storage"}' \ -blockdev '{"node-name":"libvirt-1-format","read-only":false,"cache":{"direct":true,"no-flush":false},"driver":"qcow2","file":"libvirt-1-storage"}' \
-device ide-hd,bus=ide.0,unit=0,drive=libvirt-1-format,id=ide0-0-0,bootindex=1 \ -device ide-hd,bus=ide.0,unit=0,drive=libvirt-1-format,id=ide0-0-0,bootindex=1,write-cache=on \
-audiodev '{"id":"audio1","driver":"none"}' \ -audiodev '{"id":"audio1","driver":"none"}' \
-device VGA,id=video0,bus=pci.0,addr=0x2 \ -device VGA,id=video0,bus=pci.0,addr=0x2 \
-device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3 \ -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3 \

View File

@ -28,7 +28,7 @@ XDG_CONFIG_HOME=/tmp/lib/domain--1-QEMUGuest1/.config \
-usb \ -usb \
-blockdev '{"driver":"file","filename":"/var/lib/libvirt/images/QEMUGuest1","node-name":"libvirt-1-storage","cache":{"direct":true,"no-flush":false},"auto-read-only":true,"discard":"unmap"}' \ -blockdev '{"driver":"file","filename":"/var/lib/libvirt/images/QEMUGuest1","node-name":"libvirt-1-storage","cache":{"direct":true,"no-flush":false},"auto-read-only":true,"discard":"unmap"}' \
-blockdev '{"node-name":"libvirt-1-format","read-only":false,"cache":{"direct":true,"no-flush":false},"driver":"qcow2","file":"libvirt-1-storage"}' \ -blockdev '{"node-name":"libvirt-1-format","read-only":false,"cache":{"direct":true,"no-flush":false},"driver":"qcow2","file":"libvirt-1-storage"}' \
-device ide-hd,bus=ide.0,unit=0,drive=libvirt-1-format,id=ide0-0-0,bootindex=1 \ -device ide-hd,bus=ide.0,unit=0,drive=libvirt-1-format,id=ide0-0-0,bootindex=1,write-cache=on \
-audiodev '{"id":"audio1","driver":"none"}' \ -audiodev '{"id":"audio1","driver":"none"}' \
-device virtio-gpu-pci,id=video0,max_outputs=1,bus=pci.0,addr=0x2 \ -device virtio-gpu-pci,id=video0,max_outputs=1,bus=pci.0,addr=0x2 \
-device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3 \ -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3 \

View File

@ -27,7 +27,7 @@ XDG_CONFIG_HOME=/tmp/lib/domain--1-QEMUGuest1/.config \
-usb \ -usb \
-blockdev '{"driver":"file","filename":"/var/lib/libvirt/images/QEMUGuest1","node-name":"libvirt-1-storage","cache":{"direct":true,"no-flush":false},"auto-read-only":true,"discard":"unmap"}' \ -blockdev '{"driver":"file","filename":"/var/lib/libvirt/images/QEMUGuest1","node-name":"libvirt-1-storage","cache":{"direct":true,"no-flush":false},"auto-read-only":true,"discard":"unmap"}' \
-blockdev '{"node-name":"libvirt-1-format","read-only":false,"cache":{"direct":true,"no-flush":false},"driver":"qcow2","file":"libvirt-1-storage"}' \ -blockdev '{"node-name":"libvirt-1-format","read-only":false,"cache":{"direct":true,"no-flush":false},"driver":"qcow2","file":"libvirt-1-storage"}' \
-device ide-hd,bus=ide.0,unit=0,drive=libvirt-1-format,id=ide0-0-0,bootindex=1 \ -device ide-hd,bus=ide.0,unit=0,drive=libvirt-1-format,id=ide0-0-0,bootindex=1,write-cache=on \
-display sdl,gl=on \ -display sdl,gl=on \
-device virtio-gpu-pci,id=video0,virgl=on,max_outputs=1,bus=pci.0,addr=0x2 \ -device virtio-gpu-pci,id=video0,virgl=on,max_outputs=1,bus=pci.0,addr=0x2 \
-device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3 \ -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3 \

View File

@ -27,7 +27,7 @@ XDG_CONFIG_HOME=/tmp/lib/domain--1-QEMUGuest1/.config \
-usb \ -usb \
-blockdev '{"driver":"file","filename":"/var/lib/libvirt/images/QEMUGuest1","node-name":"libvirt-1-storage","cache":{"direct":true,"no-flush":false},"auto-read-only":true,"discard":"unmap"}' \ -blockdev '{"driver":"file","filename":"/var/lib/libvirt/images/QEMUGuest1","node-name":"libvirt-1-storage","cache":{"direct":true,"no-flush":false},"auto-read-only":true,"discard":"unmap"}' \
-blockdev '{"node-name":"libvirt-1-format","read-only":false,"cache":{"direct":true,"no-flush":false},"driver":"qcow2","file":"libvirt-1-storage"}' \ -blockdev '{"node-name":"libvirt-1-format","read-only":false,"cache":{"direct":true,"no-flush":false},"driver":"qcow2","file":"libvirt-1-storage"}' \
-device ide-hd,bus=ide.0,unit=0,drive=libvirt-1-format,id=ide0-0-0,bootindex=1 \ -device ide-hd,bus=ide.0,unit=0,drive=libvirt-1-format,id=ide0-0-0,bootindex=1,write-cache=on \
-audiodev '{"id":"audio1","driver":"spice"}' \ -audiodev '{"id":"audio1","driver":"spice"}' \
-spice port=0,gl=on,rendernode=/dev/dri/foo,seamless-migration=on \ -spice port=0,gl=on,rendernode=/dev/dri/foo,seamless-migration=on \
-device virtio-gpu-pci,id=video0,virgl=on,max_outputs=1,bus=pci.0,addr=0x2 \ -device virtio-gpu-pci,id=video0,virgl=on,max_outputs=1,bus=pci.0,addr=0x2 \

View File

@ -28,7 +28,7 @@ XDG_CONFIG_HOME=/tmp/lib/domain--1-QEMUGuest1/.config \
-usb \ -usb \
-blockdev '{"driver":"file","filename":"/var/lib/libvirt/images/QEMUGuest1","node-name":"libvirt-1-storage","cache":{"direct":true,"no-flush":false},"auto-read-only":true,"discard":"unmap"}' \ -blockdev '{"driver":"file","filename":"/var/lib/libvirt/images/QEMUGuest1","node-name":"libvirt-1-storage","cache":{"direct":true,"no-flush":false},"auto-read-only":true,"discard":"unmap"}' \
-blockdev '{"node-name":"libvirt-1-format","read-only":false,"cache":{"direct":true,"no-flush":false},"driver":"qcow2","file":"libvirt-1-storage"}' \ -blockdev '{"node-name":"libvirt-1-format","read-only":false,"cache":{"direct":true,"no-flush":false},"driver":"qcow2","file":"libvirt-1-storage"}' \
-device ide-hd,bus=ide.0,unit=0,drive=libvirt-1-format,id=ide0-0-0,bootindex=1 \ -device ide-hd,bus=ide.0,unit=0,drive=libvirt-1-format,id=ide0-0-0,bootindex=1,write-cache=on \
-audiodev '{"id":"audio1","driver":"none"}' \ -audiodev '{"id":"audio1","driver":"none"}' \
-device virtio-gpu-pci,id=video0,virgl=on,max_outputs=1,bus=pci.0,addr=0x2 \ -device virtio-gpu-pci,id=video0,virgl=on,max_outputs=1,bus=pci.0,addr=0x2 \
-device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3 \ -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3 \

View File

@ -28,7 +28,7 @@ XDG_CONFIG_HOME=/tmp/lib/domain--1-QEMUGuest1/.config \
-usb \ -usb \
-blockdev '{"driver":"file","filename":"/var/lib/libvirt/images/QEMUGuest1","node-name":"libvirt-1-storage","cache":{"direct":true,"no-flush":false},"auto-read-only":true,"discard":"unmap"}' \ -blockdev '{"driver":"file","filename":"/var/lib/libvirt/images/QEMUGuest1","node-name":"libvirt-1-storage","cache":{"direct":true,"no-flush":false},"auto-read-only":true,"discard":"unmap"}' \
-blockdev '{"node-name":"libvirt-1-format","read-only":false,"cache":{"direct":true,"no-flush":false},"driver":"qcow2","file":"libvirt-1-storage"}' \ -blockdev '{"node-name":"libvirt-1-format","read-only":false,"cache":{"direct":true,"no-flush":false},"driver":"qcow2","file":"libvirt-1-storage"}' \
-device ide-hd,bus=ide.0,unit=0,drive=libvirt-1-format,id=ide0-0-0,bootindex=1 \ -device ide-hd,bus=ide.0,unit=0,drive=libvirt-1-format,id=ide0-0-0,bootindex=1,write-cache=on \
-audiodev '{"id":"audio1","driver":"none"}' \ -audiodev '{"id":"audio1","driver":"none"}' \
-device virtio-vga,id=video0,max_outputs=1,bus=pci.0,addr=0x2 \ -device virtio-vga,id=video0,max_outputs=1,bus=pci.0,addr=0x2 \
-device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3 \ -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3 \