On 02/27/2018 03:06 AM, Star Guo wrote:
> Hello Everyone,
>
>
>
> My pc run in CentOS 7.4 and install libvirt-4.0.0 + Qemu-kvm 2.9.0 + Ceph
> 10.2.10 ALL-in-One.
>
>
>
> I use python-sdk with libvirt and run [self.domain.updateDeviceFlags(xml,
> libvirt.VIR_DOMAIN_AFFECT_LIVE)] on CDROM (I want to change media path).
> However, I enable libvirt debug log , the log as below:
>
> <snip/>
>
> I see the flow is virDomainUpdateDeviceFlags -> qemuMonitorChangeMedia, but
> the cephx auth is drop, so make update error. Anybody meet this error?
Yes, this is a libvirt bug. I think this fixes the issue:
diff --git i/src/qemu/qemu_driver.c w/src/qemu/qemu_driver.c
index 96454c17c..0e5ad9971 100644
--- i/src/qemu/qemu_driver.c
+++ w/src/qemu/qemu_driver.c
@@ -7842,6 +7842,8 @@ qemuDomainChangeDiskLive(virDomainObjPtr vm,
virQEMUDriverPtr driver,
bool force)
{
+ virQEMUDriverConfigPtr cfg = virQEMUDriverGetConfig(driver);
+ qemuDomainObjPrivatePtr priv = vm->privateData;
virDomainDiskDefPtr disk = dev->data.disk;
virDomainDiskDefPtr orig_disk = NULL;
virDomainDeviceDef oldDev = { .type = dev->type };
@@ -7850,6 +7852,9 @@ qemuDomainChangeDiskLive(virDomainObjPtr vm,
if (virDomainDiskTranslateSourcePool(disk) < 0)
goto cleanup;
+ if (qemuDomainPrepareDiskSource(disk, priv, cfg) < 0)
+ goto cleanup;
+
if (qemuDomainDetermineDiskChain(driver, vm, disk, false, true) < 0)
goto cleanup;
@@ -7898,6 +7903,7 @@ qemuDomainChangeDiskLive(virDomainObjPtr vm,
ret = 0;
cleanup:
+ virObjectUnref(cfg);
return ret;
}
Can you check and confirm?
Michal
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