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qemu_snapshot: Add the guest name to the transient disk path

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Later patches will implement sharing of the backing file, so we'll need
to be able to discriminate the overlays per VM.

Signed-off-by: Masayoshi Mizuma <m.mizuma@jp.fujitsu.com>
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
This commit is contained in:
Masayoshi Mizuma 2021-03-24 20:54:11 -04:00 committed by Peter Krempa
parent b7583a5ba3
commit b4d87669ba
3 changed files with 7 additions and 4 deletions
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2
src/qemu/qemu_process.c
View File

@ -6960,7 +6960,7 @@ qemuProcessSetupDisksTransientSnapshot(virDomainObj *vm,
/* validation code makes sure that we do this only for local disks
* with a file source */
if (!(snapdisk = qemuSnapshotGetTransientDiskDef(domdisk)))
if (!(snapdisk = qemuSnapshotGetTransientDiskDef(domdisk, vm->def->name)))
return -1;
if (qemuSnapshotDiskPrepareOne(snapctxt, domdisk, snapdisk,

6
src/qemu/qemu_snapshot.c
View File

@ -1169,7 +1169,8 @@ qemuSnapshotDiskPrepareActiveExternal(virDomainObj *vm,
virDomainSnapshotDiskDef *
qemuSnapshotGetTransientDiskDef(virDomainDiskDef *domdisk)
qemuSnapshotGetTransientDiskDef(virDomainDiskDef *domdisk,
const char *suffix)
{
g_autoptr(virDomainSnapshotDiskDef) snapdisk = g_new0(virDomainSnapshotDiskDef, 1);
@ -1178,7 +1179,8 @@ qemuSnapshotGetTransientDiskDef(virDomainDiskDef *domdisk)
snapdisk->src = virStorageSourceNew();
snapdisk->src->type = VIR_STORAGE_TYPE_FILE;
snapdisk->src->format = VIR_STORAGE_FILE_QCOW2;
snapdisk->src->path = g_strdup_printf("%s.TRANSIENT", domdisk->src->path);
snapdisk->src->path = g_strdup_printf("%s.TRANSIENT-%s",
domdisk->src->path, suffix);
if (virFileExists(snapdisk->src->path)) {
virReportError(VIR_ERR_OPERATION_UNSUPPORTED,

3
src/qemu/qemu_snapshot.h
View File

@ -79,4 +79,5 @@ int
qemuSnapshotDiskCreate(qemuSnapshotDiskContext *snapctxt);
virDomainSnapshotDiskDef *
qemuSnapshotGetTransientDiskDef(virDomainDiskDef *domdisk);
qemuSnapshotGetTransientDiskDef(virDomainDiskDef *domdisk,
const char *suffix);