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qemu: Allways assume QEMU_CAPS_CHANGE_BACKING_FILE

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The 'change-backing-file' command was added in qemu-2.1 and doesn't have
any dependencies. We use it as witness for using blockjobs with relative
backing paths. Always assume it's supported.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This commit is contained in:
Peter Krempa 2022-07-15 16:04:23 +02:00
parent d1e0eaabb1
commit e6f50bab56
1 changed files with 0 additions and 13 deletions
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13
src/qemu/qemu_driver.c
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@ -14501,13 +14501,6 @@ qemuDomainBlockPullCommon(virDomainObj *vm,
if (baseSource) {
if (flags & VIR_DOMAIN_BLOCK_REBASE_RELATIVE) {
if (!virQEMUCapsGet(priv->qemuCaps, QEMU_CAPS_CHANGE_BACKING_FILE)) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("this QEMU binary doesn't support relative "
"block pull/rebase"));
goto endjob;
}
if (blockdev &&
qemuBlockUpdateRelativeBacking(vm, disk->src, disk->src) < 0)
goto endjob;
@ -15638,12 +15631,6 @@ qemuDomainBlockCommit(virDomainPtr dom,
if (flags & VIR_DOMAIN_BLOCK_COMMIT_RELATIVE &&
topSource != disk->src) {
if (!virQEMUCapsGet(priv->qemuCaps, QEMU_CAPS_CHANGE_BACKING_FILE)) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("this qemu doesn't support relative block commit"));
goto endjob;
}
if (blockdev && top_parent &&
qemuBlockUpdateRelativeBacking(vm, top_parent, disk->src) < 0)
goto endjob;