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libvirt/qemu - support persistent update of disks

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Support update of disks by MODIFY_CONFIG

This patch includes changes for qemu's disk to support
virDomainUpdateDeviceFlags() with VIR_DOMAIN_DEVICE_MODIFY_CONFIG.

This patch adds support for CDROM/foppy disk types.

Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>

* src/qemu/qemu_driver.c
(qemuDomainUpdateDeviceConfig): support cdrom/floppy.
This commit is contained in:
KAMEZAWA Hiroyuki 2011-04-22 12:10:28 +09:00 committed by Eric Blake
parent 578391e1bc
commit f37c29c8aa
1 changed files with 39 additions and 1 deletions
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40
src/qemu/qemu_driver.c
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@ -4136,10 +4136,48 @@ qemuDomainDetachDeviceConfig(virDomainDefPtr vmdef,
} }
static int static int
qemuDomainUpdateDeviceConfig(virDomainDefPtr vmdef ATTRIBUTE_UNUSED, qemuDomainUpdateDeviceConfig(virDomainDefPtr vmdef,
virDomainDeviceDefPtr dev) virDomainDeviceDefPtr dev)
{ {
virDomainDiskDefPtr orig, disk;
int pos;
switch (dev->type) { switch (dev->type) {
case VIR_DOMAIN_DEVICE_DISK:
disk = dev->data.disk;
pos = virDomainDiskIndexByName(vmdef, disk->dst);
if (pos < 0) {
qemuReportError(VIR_ERR_INVALID_ARG,
_("target %s doesn't exists."), disk->dst);
return -1;
}
orig = vmdef->disks[pos];
if (!(orig->device == VIR_DOMAIN_DISK_DEVICE_CDROM) &&
!(orig->device == VIR_DOMAIN_DISK_DEVICE_FLOPPY)) {
qemuReportError(VIR_ERR_INVALID_ARG,
_("this disk doesn't support update"));
return -1;
}
/*
* Update 'orig'
* We allow updating src/type//driverType/cachemode/
*/
VIR_FREE(orig->src);
orig->src = disk->src;
orig->type = disk->type;
orig->cachemode = disk->cachemode;
if (disk->driverName) {
VIR_FREE(orig->driverName);
orig->driverName = disk->driverName;
disk->driverName = NULL;
}
if (disk->driverType) {
VIR_FREE(orig->driverType);
orig->driverType = disk->driverType;
disk->driverType = NULL;
}
disk->src = NULL;
break;
default: default:
qemuReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s", qemuReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("persistent update of device is not supported")); _("persistent update of device is not supported"));