Description of problem: When I use a disk type storage pool that uses a multipath'ed backend, I am getting the following failure as I try to create the vol (or when I try to start the pool with existing partitions on the backend). $ virsh vol-create-as poolname vol1 10G error: Failed to create vol vol1 error: cannot stat file '/dev/mapper/mpathap1': No such file or directory The partition is created successfully and the DSF for it is /dev/mapper/mpatha1 (has no "p"). Here is the pool definition: <pool type="disk"> <name>poolname</name> <source> <device path="/dev/mapper/mpatha"/> <format type="gpt"/> </source> <target> <path>/dev</path> </target> </pool> I also tried passing /dev/mapper as the target path but got the same failure. Interestingly, things work fine when I take multipath/dm out of the picture. This is happening on F19 with the latest set of packages. I enabled debug logging to collect more information. Here are some debug messages that seemed interesting (let me know if you need the full log and I can send it as well). ... 2013-07-18 22:43:44.264+0000: 11672: debug : virStorageBackendDiskPartBoundries:560 : find free area: allocation 12884901888, cyl size 8225280 2013-07-18 22:43:44.264+0000: 11672: debug : virStorageBackendDiskPartBoundries:613 : aligned alloc 12884901888 2013-07-18 22:43:44.264+0000: 11672: debug : virStorageBackendDiskPartBoundries:629 : final aligned start 17408, end 12884919295 2013-07-18 22:43:44.264+0000: 11672: debug : virCommandRunAsync:2243 : About to run /usr/sbin/parted /dev/mapper/mpatha mkpart --script primary 17408B 12884919295B 2013-07-18 22:43:44.264+0000: 11672: debug : virFileClose:72 : Closed fd 23 2013-07-18 22:43:44.264+0000: 11672: debug : virFileClose:72 : Closed fd 25 2013-07-18 22:43:44.264+0000: 11672: debug : virFileClose:72 : Closed fd 27 2013-07-18 22:43:44.265+0000: 11672: debug : virCommandRunAsync:2248 : Command result 0, with PID 11774 ... <<<following set of debug messages repeats a few times>>> 2013-07-18 22:43:44.295+0000: 11669: debug : udevEventHandleCallback:1513 : udev action: 'add' 2013-07-18 22:43:44.295+0000: 11669: debug : udevGetDeviceProperty:121 : udev reports device 'dm-1' does not have property 'DRIVER' 2013-07-18 22:43:44.295+0000: 11669: debug : udevGetDeviceType:1139 : Found device type 'disk' for device 'dm-1' 2013-07-18 22:43:44.295+0000: 11669: debug : udevGetDeviceProperty:121 : udev reports device 'dm-1' does not have property 'ID_BUS' 2013-07-18 22:43:44.295+0000: 11669: debug : udevGetDeviceProperty:121 : udev reports device 'dm-1' does not have property 'ID_SERIAL' 2013-07-18 22:43:44.295+0000: 11669: debug : udevGetDeviceSysfsAttr:210 : udev reports device 'dm-1' does not have sysfs attr 'device/vendor' 2013-07-18 22:43:44.295+0000: 11669: debug : udevGetDeviceSysfsAttr:210 : udev reports device 'dm-1' does not have sysfs attr 'device/model' 2013-07-18 22:43:44.295+0000: 11669: debug : udevGetDeviceProperty:121 : udev reports device 'dm-1' does not have property 'ID_TYPE' 2013-07-18 22:43:44.295+0000: 11669: debug : udevGetDeviceProperty:121 : udev reports device 'dm-1' does not have property 'ID_DRIVE_FLOPPY' 2013-07-18 22:43:44.295+0000: 11669: debug : udevGetDeviceProperty:121 : udev reports device 'dm-1' does not have property 'ID_DRIVE_FLASH_SD' 2013-07-18 22:43:44.295+0000: 11669: debug : udevKludgeStorageType:995 : Could not find definitive storage type for device with sysfs path '/sys/devices/virtual/block/dm-1', trying to guess it 2013-07-18 22:43:44.295+0000: 11669: debug : udevKludgeStorageType:1007 : Could not determine storage type for device with sysfs path '/sys/devices/virtual/block/dm-1' 2013-07-18 22:43:44.295+0000: 11669: debug : udevProcessStorage:1124 : Storage ret=-1 2013-07-18 22:43:44.295+0000: 11669: debug : udevAddOneDevice:1382 : Discarding device -1 0x7f3f187f7f60 /sys/devices/virtual/block/dm-1 ... 2013-07-18 22:43:54.288+0000: 11672: error : virStorageBackendVolOpenCheckMode:1047 : cannot stat file '/dev/mapper/mpathap1': No such file or directory Version-Release number of selected component (if applicable): $ rpm -qa | grep libvirt libvirt-client-1.0.5.2-1.fc19.x86_64 libvirt-daemon-driver-lxc-1.0.5.2-1.fc19.x86_64 libvirt-daemon-driver-nodedev-1.0.5.2-1.fc19.x86_64 libvirt-daemon-driver-interface-1.0.5.2-1.fc19.x86_64 libvirt-python-1.0.5.2-1.fc19.x86_64 libvirt-daemon-1.0.5.2-1.fc19.x86_64 libvirt-daemon-config-nwfilter-1.0.5.2-1.fc19.x86_64 libvirt-daemon-driver-storage-1.0.5.2-1.fc19.x86_64 libvirt-daemon-driver-nwfilter-1.0.5.2-1.fc19.x86_64 libvirt-daemon-driver-network-1.0.5.2-1.fc19.x86_64 libvirt-daemon-driver-xen-1.0.5.2-1.fc19.x86_64 libvirt-daemon-driver-libxl-1.0.5.2-1.fc19.x86_64 libvirt-daemon-config-network-1.0.5.2-1.fc19.x86_64 libvirt-1.0.5.2-1.fc19.x86_64 libvirt-glib-0.1.6-1.fc19.x86_64 libvirt-daemon-driver-qemu-1.0.5.2-1.fc19.x86_64 libvirt-daemon-driver-secret-1.0.5.2-1.fc19.x86_64 libvirt-daemon-driver-uml-1.0.5.2-1.fc19.x86_64 How reproducible: Everytime. Steps to Reproduce: Described in the description section. Actual results: Expected results: Additional info:
The code in question seems to be my commit id: ae3275c0bb538e29eab840153ccc748cd5023cf7
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