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conf: Introduce 'effectiveBootIndex' into 'virDomainDeviceInfo'
'effectiveBootIndex' is a copy of 'bootIndex' if '<boot order=' was present and left unassigned if not. This allows hypervisor drivers to reinterpret <os><boot> without being visible in the XML. QEMU driver had a internal implementation for disks, which is now replaced. Additionally this will simplify a refactor of network boot assignment. Signed-off-by: Peter Krempa <pkrempa@redhat.com> Reviewed-by: Ján Tomko <jtomko@redhat.com>
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@ -149,6 +149,10 @@ struct _virDomainDeviceInfo {
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/* bootIndex is only used for disk, network interface, hostdev
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* and redirdev devices */
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unsigned int bootIndex;
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/* 'effectiveBootIndex' is same as 'bootIndex' (if provided in the XML) but
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* not formatted back. This allows HV drivers to update it if <os><boot ..
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* is present. */
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unsigned int effectiveBootIndex;
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/* Valid for any PCI device. Can be used for NIC to get
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* stable numbering in Linux */
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unsigned int acpiIndex;
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@ -6498,6 +6498,8 @@ virDomainDeviceBootParseXML(xmlNodePtr node,
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&info->bootIndex) < 0)
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return -1;
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info->effectiveBootIndex = info->bootIndex;
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loadparm = virXMLPropString(node, "loadparm");
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if (loadparm) {
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if (virStringToUpper(&info->loadparm, loadparm) != 1) {
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@ -1869,7 +1869,6 @@ qemuBuildDiskDeviceStr(const virDomainDef *def,
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virDomainDiskDef *disk,
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virQEMUCaps *qemuCaps)
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{
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qemuDomainDiskPrivate *diskPriv = QEMU_DOMAIN_DISK_PRIVATE(disk);
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g_auto(virBuffer) opt = VIR_BUFFER_INITIALIZER;
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const char *contAlias;
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g_autofree char *backendAlias = NULL;
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@ -2072,8 +2071,8 @@ qemuBuildDiskDeviceStr(const virDomainDef *def,
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virBufferAsprintf(&opt, ",id=%s", disk->info.alias);
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/* bootindex for floppies is configured via the fdc controller */
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if (disk->device != VIR_DOMAIN_DISK_DEVICE_FLOPPY &&
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diskPriv->effectiveBootindex > 0)
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virBufferAsprintf(&opt, ",bootindex=%u", diskPriv->effectiveBootindex);
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disk->info.effectiveBootIndex > 0)
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virBufferAsprintf(&opt, ",bootindex=%u", disk->info.effectiveBootIndex);
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if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_BLOCKIO)) {
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if (disk->blockio.logical_block_size > 0)
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virBufferAsprintf(&opt, ",logical_block_size=%u",
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@ -2187,7 +2186,6 @@ qemuBuildFloppyCommandLineControllerOptions(virCommand *cmd,
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g_autofree char *backendStr = NULL;
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g_autofree char *bootindexStr = NULL;
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virDomainDiskDef *disk = def->disks[i];
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qemuDomainDiskPrivate *diskPriv = QEMU_DOMAIN_DISK_PRIVATE(disk);
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if (disk->bus != VIR_DOMAIN_DISK_BUS_FDC)
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continue;
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@ -2199,9 +2197,9 @@ qemuBuildFloppyCommandLineControllerOptions(virCommand *cmd,
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else
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driveLetter = 'A';
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if (diskPriv->effectiveBootindex > 0)
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if (disk->info.effectiveBootIndex > 0)
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bootindexStr = g_strdup_printf("bootindex%c=%u", driveLetter,
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diskPriv->effectiveBootindex);
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disk->info.effectiveBootIndex);
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/* with -blockdev we setup the floppy device and it's backend with -device */
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if (!virQEMUCapsGet(qemuCaps, QEMU_CAPS_BLOCKDEV)) {
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@ -270,10 +270,6 @@ struct _qemuDomainDiskPrivate {
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char *qomName; /* QOM path of the disk (also refers to the block backend) */
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char *nodeCopyOnRead; /* nodename of the disk-wide copy-on-read blockdev layer */
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unsigned int effectiveBootindex; /* boot index of the disk based on one
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of the two ways we use to select a boot
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device */
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bool transientOverlayCreated; /* the overlay image of a transient disk was
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created and the definition was updated */
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};
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@ -6271,6 +6271,9 @@ qemuProcessPrepareDomainDiskBootorder(virDomainDef *def)
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unsigned int bootFloppy = 0;
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unsigned int bootDisk = 0;
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if (def->os.nBootDevs == 0)
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return;
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for (i = 0; i < def->os.nBootDevs; i++) {
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switch ((virDomainBootOrder) def->os.bootDevs[i]) {
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case VIR_DOMAIN_BOOT_CDROM:
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@ -6295,27 +6298,21 @@ qemuProcessPrepareDomainDiskBootorder(virDomainDef *def)
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for (i = 0; i < def->ndisks; i++) {
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virDomainDiskDef *disk = def->disks[i];
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qemuDomainDiskPrivate *diskPriv = QEMU_DOMAIN_DISK_PRIVATE(disk);
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if (disk->info.bootIndex > 0) {
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diskPriv->effectiveBootindex = disk->info.bootIndex;
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continue;
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}
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switch (disk->device) {
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case VIR_DOMAIN_DISK_DEVICE_CDROM:
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diskPriv->effectiveBootindex = bootCD;
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disk->info.effectiveBootIndex = bootCD;
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bootCD = 0;
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break;
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case VIR_DOMAIN_DISK_DEVICE_DISK:
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case VIR_DOMAIN_DISK_DEVICE_LUN:
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diskPriv->effectiveBootindex = bootDisk;
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disk->info.effectiveBootIndex = bootDisk;
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bootDisk = 0;
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break;
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case VIR_DOMAIN_DISK_DEVICE_FLOPPY:
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diskPriv->effectiveBootindex = bootFloppy;
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disk->info.effectiveBootIndex = bootFloppy;
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bootFloppy = 0;
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break;
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