From: John Ferlan Date: Mon, 22 Jun 2015 19:13:39 +0000 (-0400) Subject: conf: Check for hostdev conflicts when assign default disk address X-Git-Url: http://xenbits.xensource.com/gitweb?a=commitdiff_plain;h=1b08cc170a84077afd4d15f4639a9a2cf398e9a2;p=libvirt.git conf: Check for hostdev conflicts when assign default disk address https://bugzilla.redhat.com/show_bug.cgi?id=1210587 (completed) When generating the default drive address for a SCSI device, check the generated address to ensure it doesn't conflict with a SCSI address. The address generation algorithm uses the "dev" name in order to determine which controller and unit in order to place the device. Since a SCSI device doesn't require a target device name, its placement on the guest SCSI address "could" conflict. For instance, if a SCSI exists at controller=0 unit=0 and an attempt to hotplug 'sda' into the guest made, there would be a conflict if the is already using /dev/sda. --- diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c index 4493142d4f..b743bddd5f 100644 --- a/src/conf/domain_conf.c +++ b/src/conf/domain_conf.c @@ -4127,7 +4127,7 @@ virDomainDeviceDefPostParseInternal(virDomainDeviceDefPtr dev, } if (disk->info.type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_NONE && - virDomainDiskDefAssignAddress(xmlopt, disk) < 0) + virDomainDiskDefAssignAddress(xmlopt, disk, def) < 0) return -1; } @@ -5929,7 +5929,8 @@ virDomainDiskDiffersSourceOnly(virDomainDiskDefPtr disk, int virDomainDiskDefAssignAddress(virDomainXMLOptionPtr xmlopt, - virDomainDiskDefPtr def) + virDomainDiskDefPtr def, + const virDomainDef *vmdef) { int idx = virDiskNameToIndex(def->dst); if (idx < 0) { @@ -5965,6 +5966,17 @@ virDomainDiskDefAssignAddress(virDomainXMLOptionPtr xmlopt, unit = idx % 7; } + if (virDomainDriveAddressIsUsedByHostdev(vmdef, + VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_SCSI, + controller, 0, 0, unit)) { + virReportError(VIR_ERR_CONFIG_UNSUPPORTED, + _("using disk target name '%s' conflicts with " + "SCSI host device address controller='%u' " + "bus='%u' target='%u' unit='%u"), + def->dst, controller, 0, 0, unit); + return -1; + } + def->info.addr.drive.controller = controller; def->info.addr.drive.bus = 0; def->info.addr.drive.target = 0; diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h index 9762c4f276..dfe3ce8b9d 100644 --- a/src/conf/domain_conf.h +++ b/src/conf/domain_conf.h @@ -2755,7 +2755,8 @@ int virDomainDiskInsert(virDomainDefPtr def, void virDomainDiskInsertPreAlloced(virDomainDefPtr def, virDomainDiskDefPtr disk); int virDomainDiskDefAssignAddress(virDomainXMLOptionPtr xmlopt, - virDomainDiskDefPtr def); + virDomainDiskDefPtr def, + const virDomainDef *vmdef); virDomainDiskDefPtr virDomainDiskRemove(virDomainDefPtr def, size_t i); diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c index 0d7b1559a5..5a92ad4b2e 100644 --- a/src/qemu/qemu_command.c +++ b/src/qemu/qemu_command.c @@ -12105,7 +12105,7 @@ qemuParseCommandLineDisk(virDomainXMLOptionPtr xmlopt, else def->dst[2] = 'a' + idx; - if (virDomainDiskDefAssignAddress(xmlopt, def) < 0) { + if (virDomainDiskDefAssignAddress(xmlopt, def, dom) < 0) { virReportError(VIR_ERR_INTERNAL_ERROR, _("invalid device name '%s'"), def->dst); virDomainDiskDefFree(def); @@ -13248,7 +13248,7 @@ qemuParseCommandLine(virCapsPtr qemuCaps, } } - if (virDomainDiskDefAssignAddress(xmlopt, disk) < 0) { + if (virDomainDiskDefAssignAddress(xmlopt, disk, def) < 0) { virReportError(VIR_ERR_INTERNAL_ERROR, _("Cannot assign address for device name '%s'"), disk->dst); diff --git a/src/vmx/vmx.c b/src/vmx/vmx.c index e77de62515..36e2891fd4 100644 --- a/src/vmx/vmx.c +++ b/src/vmx/vmx.c @@ -960,7 +960,9 @@ virVMXFloppyDiskNameToUnit(const char *name, int *unit) static int -virVMXVerifyDiskAddress(virDomainXMLOptionPtr xmlopt, virDomainDiskDefPtr disk) +virVMXVerifyDiskAddress(virDomainXMLOptionPtr xmlopt, + virDomainDiskDefPtr disk, + virDomainDefPtr vmdef) { virDomainDiskDef def; virDomainDeviceDriveAddressPtr drive; @@ -979,7 +981,7 @@ virVMXVerifyDiskAddress(virDomainXMLOptionPtr xmlopt, virDomainDiskDefPtr disk) def.dst = disk->dst; def.bus = disk->bus; - if (virDomainDiskDefAssignAddress(xmlopt, &def) < 0) { + if (virDomainDiskDefAssignAddress(xmlopt, &def, vmdef) < 0) { virReportError(VIR_ERR_INTERNAL_ERROR, "%s", _("Could not verify disk address")); return -1; @@ -1588,7 +1590,7 @@ virVMXParseConfig(virVMXContext *ctx, if (virVMXParseDisk(ctx, xmlopt, conf, VIR_DOMAIN_DISK_DEVICE_DISK, VIR_DOMAIN_DISK_BUS_SCSI, controller, unit, - &def->disks[def->ndisks]) < 0) { + &def->disks[def->ndisks], def) < 0) { goto cleanup; } @@ -1599,7 +1601,7 @@ virVMXParseConfig(virVMXContext *ctx, if (virVMXParseDisk(ctx, xmlopt, conf, VIR_DOMAIN_DISK_DEVICE_CDROM, VIR_DOMAIN_DISK_BUS_SCSI, controller, unit, - &def->disks[def->ndisks]) < 0) { + &def->disks[def->ndisks], def) < 0) { goto cleanup; } @@ -1613,7 +1615,7 @@ virVMXParseConfig(virVMXContext *ctx, for (unit = 0; unit < 2; ++unit) { if (virVMXParseDisk(ctx, xmlopt, conf, VIR_DOMAIN_DISK_DEVICE_DISK, VIR_DOMAIN_DISK_BUS_IDE, bus, unit, - &def->disks[def->ndisks]) < 0) { + &def->disks[def->ndisks], def) < 0) { goto cleanup; } @@ -1624,7 +1626,7 @@ virVMXParseConfig(virVMXContext *ctx, if (virVMXParseDisk(ctx, xmlopt, conf, VIR_DOMAIN_DISK_DEVICE_CDROM, VIR_DOMAIN_DISK_BUS_IDE, bus, unit, - &def->disks[def->ndisks]) < 0) { + &def->disks[def->ndisks], def) < 0) { goto cleanup; } @@ -1637,7 +1639,7 @@ virVMXParseConfig(virVMXContext *ctx, for (unit = 0; unit < 2; ++unit) { if (virVMXParseDisk(ctx, xmlopt, conf, VIR_DOMAIN_DISK_DEVICE_FLOPPY, VIR_DOMAIN_DISK_BUS_FDC, 0, unit, - &def->disks[def->ndisks]) < 0) { + &def->disks[def->ndisks], def) < 0) { goto cleanup; } @@ -1925,7 +1927,7 @@ virVMXParseSCSIController(virConfPtr conf, int controller, bool *present, int virVMXParseDisk(virVMXContext *ctx, virDomainXMLOptionPtr xmlopt, virConfPtr conf, int device, int busType, int controllerOrBus, int unit, - virDomainDiskDefPtr *def) + virDomainDiskDefPtr *def, virDomainDefPtr vmdef) { /* * device = {VIR_DOMAIN_DISK_DEVICE_DISK, @@ -2280,7 +2282,7 @@ virVMXParseDisk(virVMXContext *ctx, virDomainXMLOptionPtr xmlopt, virConfPtr con goto cleanup; } - if (virDomainDiskDefAssignAddress(xmlopt, *def) < 0) { + if (virDomainDiskDefAssignAddress(xmlopt, *def, vmdef) < 0) { virReportError(VIR_ERR_INTERNAL_ERROR, _("Could not assign address to disk '%s'"), virDomainDiskGetSource(*def)); @@ -3189,7 +3191,7 @@ virVMXFormatConfig(virVMXContext *ctx, virDomainXMLOptionPtr xmlopt, virDomainDe /* def:disks */ for (i = 0; i < def->ndisks; ++i) { - if (virVMXVerifyDiskAddress(xmlopt, def->disks[i]) < 0 || + if (virVMXVerifyDiskAddress(xmlopt, def->disks[i], def) < 0 || virVMXHandleLegacySCSIDiskDriverName(def, def->disks[i]) < 0) { goto cleanup; } diff --git a/src/vmx/vmx.h b/src/vmx/vmx.h index 6a68c8b281..e98612498c 100644 --- a/src/vmx/vmx.h +++ b/src/vmx/vmx.h @@ -89,7 +89,8 @@ int virVMXParseSCSIController(virConfPtr conf, int controller, bool *present, int virVMXParseDisk(virVMXContext *ctx, virDomainXMLOptionPtr xmlopt, virConfPtr conf, int device, int busType, - int controllerOrBus, int unit, virDomainDiskDefPtr *def); + int controllerOrBus, int unit, virDomainDiskDefPtr *def, + virDomainDefPtr vmdef); int virVMXParseFileSystem(virConfPtr conf, int number, virDomainFSDefPtr *def);