Re: [libvirt] [PATCH 15/34] Auto-add disk controllers based on defined disks

Existing applications using libvirt are not aware of the disk controller concept. Thus, after parsing the <disk> definitions in the XML, it is neccessary to create <controller> elements to satisfy all requested disks, as per their defined drive addresses * src/conf/domain_conf.c, src/conf/domain_conf.h, src/libvirt_private.syms: Add virDomainDefAddDiskControllers() method for populating disk controllers, and call it after parsing disk definitions. * src/qemu/qemu_conf.c: Call virDomainDefAddDiskControllers() when doing ARGV -> XML conversion * tests/qemuxml2argvdata/qemuxml2argv*.xml: Add disk controller data to all data files which don't have it already

+/* + * Based on the declared <address type=drive> info for any disks, + * add neccessary drive controllers which are not already present + * in the XML. This is for compat with existing apps which will + * not know/care about <controller> info in the XML + */ +int virDomainDefAddDiskControllers(virDomainDefPtr def) +{ + if (virDomainDefAddDiskControllersForType(def, + VIR_DOMAIN_CONTROLLER_TYPE_SCSI, + VIR_DOMAIN_DISK_BUS_SCSI) < 0) + return -1; + + if (virDomainDefAddDiskControllersForType(def, + VIR_DOMAIN_CONTROLLER_TYPE_FDC, + VIR_DOMAIN_DISK_BUS_FDC) < 0) + return -1; + + if (virDomainDefAddDiskControllersForType(def, + VIR_DOMAIN_CONTROLLER_TYPE_IDE, + VIR_DOMAIN_DISK_BUS_IDE) < 0) + return -1; + + return 0; +}

--- a/tests/qemuxml2argvdata/qemuxml2argv-floppy-drive-fat.xml +++ b/tests/qemuxml2argvdata/qemuxml2argv-floppy-drive-fat.xml @@ -21,5 +21,7 @@ <readonly/> <address type='drive' controller='0' bus='0' unit='0'/> </disk> + <controller type='ide' index='0'/> + <controller type='fdc' index='0'/> </devices> </domain>