111 lines
4.1 KiB
Diff
111 lines
4.1 KiB
Diff
commit 7906a668fa8d5c21cc729db8a13b08e3dd1d241f
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Author: Jim Fehlig <jfehlig@novell.com>
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Date: Wed Jan 27 16:11:41 2010 -0700
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Do not search xenstore for disk device IDs
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Disk devices can be referenced by name in Xen, e.g. when modifying
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their configuration or remvoving them. As such, don't search
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xenstore for a device ID corresponding to the disk device. Instead,
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search the disks contained in the domain definition and use the
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disk's target name if found.
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This approach allows removing a disk when domain is inactive. We
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obviously can't search xenstore when the domain is inactive.
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Index: libvirt-0.9.4/src/xen/xend_internal.c
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===================================================================
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--- libvirt-0.9.4.orig/src/xen/xend_internal.c
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+++ libvirt-0.9.4/src/xen/xend_internal.c
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@@ -60,6 +60,7 @@
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static int
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virDomainXMLDevID(virDomainPtr domain,
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+ virDomainDefPtr domDef,
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virDomainDeviceDefPtr dev,
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char *class,
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char *ref,
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@@ -2807,7 +2808,7 @@ xenDaemonAttachDeviceFlags(virDomainPtr
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sexpr = virBufferContentAndReset(&buf);
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- if (virDomainXMLDevID(domain, dev, class, ref, sizeof(ref))) {
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+ if (virDomainXMLDevID(domain, def, dev, class, ref, sizeof(ref))) {
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/* device doesn't exist, define it */
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ret = xend_op(domain->conn, domain->name, "op", "device_create",
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"config", sexpr, NULL);
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@@ -2928,7 +2929,7 @@ xenDaemonUpdateDeviceFlags(virDomainPtr
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sexpr = virBufferContentAndReset(&buf);
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- if (virDomainXMLDevID(domain, dev, class, ref, sizeof(ref))) {
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+ if (virDomainXMLDevID(domain, def, dev, class, ref, sizeof(ref))) {
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virXendError(VIR_ERR_OPERATION_INVALID, "%s",
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_("requested device does not exist"));
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goto cleanup;
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@@ -3023,7 +3024,7 @@ xenDaemonDetachDeviceFlags(virDomainPtr
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def, xml, VIR_DOMAIN_XML_INACTIVE)))
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goto cleanup;
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- if (virDomainXMLDevID(domain, dev, class, ref, sizeof(ref)))
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+ if (virDomainXMLDevID(domain, def, dev, class, ref, sizeof(ref)))
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goto cleanup;
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if (dev->type == VIR_DOMAIN_DEVICE_HOSTDEV) {
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@@ -3979,6 +3980,7 @@ struct xenUnifiedDriver xenDaemonDriver
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*/
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static int
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virDomainXMLDevID(virDomainPtr domain,
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+ virDomainDefPtr domDef,
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virDomainDeviceDefPtr dev,
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char *class,
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char *ref,
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@@ -3987,8 +3989,12 @@ virDomainXMLDevID(virDomainPtr domain,
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xenUnifiedPrivatePtr priv = domain->conn->privateData;
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char *xref;
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char *tmp;
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+ unsigned int i;
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+ virDomainDiskDefPtr disk;
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if (dev->type == VIR_DOMAIN_DEVICE_DISK) {
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+ if (dev->data.disk->dst == NULL)
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+ return -1;
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if (dev->data.disk->driverName &&
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STREQ(dev->data.disk->driverName, "tap"))
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strcpy(class, "tap");
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@@ -3998,19 +4004,21 @@ virDomainXMLDevID(virDomainPtr domain,
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else
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strcpy(class, "vbd");
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- if (dev->data.disk->dst == NULL)
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- return -1;
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- xenUnifiedLock(priv);
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- xref = xenStoreDomainGetDiskID(domain->conn, domain->id,
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- dev->data.disk->dst);
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- xenUnifiedUnlock(priv);
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- if (xref == NULL)
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- return -1;
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-
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- tmp = virStrcpy(ref, xref, ref_len);
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- VIR_FREE(xref);
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- if (tmp == NULL)
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- return -1;
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+ /* For disks, the device name can be used directly.
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+ * If disk device exists in domain definintion,
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+ * copy it to ref and return success.
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+ */
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+ for (i = 0; i < domDef->ndisks; i++) {
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+ disk = domDef->disks[i];
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+ if (STREQ(dev->data.disk->dst, disk->dst)) {
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+ tmp = virStrcpy(ref, disk->dst, ref_len);
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+ if (tmp == NULL)
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+ return -1;
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+ else
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+ return 0;
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+ }
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+ }
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+ return -1;
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} else if (dev->type == VIR_DOMAIN_DEVICE_NET) {
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char mac[30];
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virDomainNetDefPtr def = dev->data.net;
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