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qemu: domain: Regenerate hostdev source private data

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When upgrading from a libvirt which didn't format private data of a
virStorageSource representing an iSCSI hostdev source, we might need to
generate some internal data so that the code still works as if it was
present in the status XML.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This commit is contained in:
Peter Krempa 2020-06-17 09:29:13 +02:00
parent 3aca4865a8
commit dd339e86db
3 changed files with 102 additions and 2 deletions
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54
src/qemu/qemu_domain.c
View File

@ -5089,6 +5089,51 @@ qemuDomainVsockDefPostParse(virDomainVsockDefPtr vsock)
}
/**
* qemuDomainDeviceHostdevDefPostParseRestoreSecAlias:
*
* Re-generate aliases for objects related to the storage source if they
* were not stored in the status XML by an older libvirt.
*
* Note that qemuCaps should be always present for a status XML.
*/
static int
qemuDomainDeviceHostdevDefPostParseRestoreSecAlias(virDomainHostdevDefPtr hostdev,
virQEMUCapsPtr qemuCaps,
unsigned int parseFlags)
{
qemuDomainStorageSourcePrivatePtr priv;
virDomainHostdevSubsysSCSIPtr scsisrc = &hostdev->source.subsys.u.scsi;
virDomainHostdevSubsysSCSIiSCSIPtr iscsisrc = &scsisrc->u.iscsi;
g_autofree char *authalias = NULL;
if (!(parseFlags & VIR_DOMAIN_DEF_PARSE_STATUS) ||
!qemuCaps ||
!virQEMUCapsGet(qemuCaps, QEMU_CAPS_OBJECT_SECRET))
return 0;
if (hostdev->mode != VIR_DOMAIN_HOSTDEV_MODE_SUBSYS ||
hostdev->source.subsys.type != VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_SCSI ||
scsisrc->protocol != VIR_DOMAIN_HOSTDEV_SCSI_PROTOCOL_TYPE_ISCSI ||
!virQEMUCapsGet(qemuCaps, QEMU_CAPS_ISCSI_PASSWORD_SECRET) ||
!qemuDomainStorageSourceHasAuth(iscsisrc->src))
return 0;
if (!(priv = qemuDomainStorageSourcePrivateFetch(iscsisrc->src)))
return -1;
if (priv->secinfo)
return 0;
authalias = g_strdup_printf("%s-secret0", hostdev->info->alias);
if (qemuStorageSourcePrivateDataAssignSecinfo(&priv->secinfo, &authalias) < 0)
return -1;
return 0;
}
static int
qemuDomainHostdevDefMdevPostParse(virDomainHostdevSubsysMediatedDevPtr mdevsrc,
virQEMUCapsPtr qemuCaps)
@ -5106,10 +5151,15 @@ qemuDomainHostdevDefMdevPostParse(virDomainHostdevSubsysMediatedDevPtr mdevsrc,
static int
qemuDomainHostdevDefPostParse(virDomainHostdevDefPtr hostdev,
virQEMUCapsPtr qemuCaps)
virQEMUCapsPtr qemuCaps,
unsigned int parseFlags)
{
virDomainHostdevSubsysPtr subsys = &hostdev->source.subsys;
if (qemuDomainDeviceHostdevDefPostParseRestoreSecAlias(hostdev, qemuCaps,
parseFlags) < 0)
return -1;
if (hostdev->mode == VIR_DOMAIN_HOSTDEV_MODE_SUBSYS &&
hostdev->source.subsys.type == VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_MDEV &&
qemuDomainHostdevDefMdevPostParse(&subsys->u.mdev, qemuCaps) < 0)
@ -5184,7 +5234,7 @@ qemuDomainDeviceDefPostParse(virDomainDeviceDefPtr dev,
break;
case VIR_DOMAIN_DEVICE_HOSTDEV:
ret = qemuDomainHostdevDefPostParse(dev->data.hostdev, qemuCaps);
ret = qemuDomainHostdevDefPostParse(dev->data.hostdev, qemuCaps, parseFlags);
break;
case VIR_DOMAIN_DEVICE_TPM:

20
tests/qemustatusxml2xmldata/disk-secinfo-upgrade-in.xml
View File

@ -491,6 +491,26 @@
<alias name='video0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
</video>
<hostdev mode='subsystem' type='scsi' managed='yes'>
<source protocol='iscsi' name='iqn.1992-01.com.example:storage/1'>
<host name='example.org' port='3260'/>
<auth username='myname'>
<secret type='iscsi' usage='mycluster_myname'/>
</auth>
</source>
<alias name='hostdev0'/>
<address type='drive' controller='0' bus='0' target='2' unit='4'/>
</hostdev>
<hostdev mode='subsystem' type='scsi' managed='yes'>
<source protocol='iscsi' name='iqn.1992-01.com.example:storage/2'>
<host name='example.org' port='3260'/>
<auth username='myname'>
<secret type='iscsi' usage='mycluster_myname'/>
</auth>
</source>
<alias name='hostdev1'/>
<address type='drive' controller='0' bus='0' target='2' unit='5'/>
</hostdev>
<redirdev bus='usb' type='spicevmc'>
<alias name='redir0'/>
<address type='usb' bus='0' port='2'/>

30
tests/qemustatusxml2xmldata/disk-secinfo-upgrade-out.xml
View File

@ -513,6 +513,36 @@
<alias name='video0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
</video>
<hostdev mode='subsystem' type='scsi' managed='yes'>
<source protocol='iscsi' name='iqn.1992-01.com.example:storage/1'>
<host name='example.org' port='3260'/>
<privateData>
<objects>
<secret type='auth' alias='hostdev0-secret0'/>
</objects>
</privateData>
<auth username='myname'>
<secret type='iscsi' usage='mycluster_myname'/>
</auth>
</source>
<alias name='hostdev0'/>
<address type='drive' controller='0' bus='0' target='2' unit='4'/>
</hostdev>
<hostdev mode='subsystem' type='scsi' managed='yes'>
<source protocol='iscsi' name='iqn.1992-01.com.example:storage/2'>
<host name='example.org' port='3260'/>
<privateData>
<objects>
<secret type='auth' alias='hostdev1-secret0'/>
</objects>
</privateData>
<auth username='myname'>
<secret type='iscsi' usage='mycluster_myname'/>
</auth>
</source>
<alias name='hostdev1'/>
<address type='drive' controller='0' bus='0' target='2' unit='5'/>
</hostdev>
<redirdev bus='usb' type='spicevmc'>
<alias name='redir0'/>
<address type='usb' bus='0' port='2'/>