analysis of the two logs shows the following events missing from udev in the failed case.
UDEV [4.229209] add /devices/pci0000:00/0000:00:01.1/host2/target2:0:1/2:0:1:0/block/sdc (block) UDEV_LOG=3 ACTION=add DEVPATH=/devices/pci0000:00/0000:00:01.1/host2/target2:0:1/2:0:1:0/block/sdc SUBSYSTEM=block DEVNAME=/dev/sdc DEVTYPE=disk SEQNUM=770 ID_ATA=1 ID_TYPE=disk ID_BUS=ata ID_MODEL=QEMU_HARDDISK ID_MODEL_ENC=QEMU\x20HARDDISK\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20 ID_REVISION=0.14.0 ID_SERIAL=QEMU_HARDDISK_QM00004 ID_SERIAL_SHORT=QM00004 ID_ATA_WRITE_CACHE=1 ID_ATA_WRITE_CACHE_ENABLED=0 ID_ATA_FEATURE_SET_SMART=1 ID_ATA_FEATURE_SET_SMART_ENABLED=1 ID_SCSI_COMPAT=SATA_QEMU_HARDDISK_QM00004 ID_PATH=pci-0000:00:01.1-scsi-1:0:1:0 ID_PATH_TAG=pci-0000_00_01_1-scsi-1_0_1_0 ID_FS_UUID=4qMaMd-jD2v-vzpj-ScTe-Rsz7-CDw0-3DCuLn ID_FS_UUID_ENC=4qMaMd-jD2v-vzpj-ScTe-Rsz7-CDw0-3DCuLn ID_FS_VERSION=LVM2\x20001 ID_FS_TYPE=LVM2_member ID_FS_USAGE=raid MAJOR=8 MINOR=32 DEVLINKS=/dev/disk/by-id/ata-QEMU_HARDDISK_QM00004 /dev/disk/by-id/scsi-SATA_QEMU_HARDDISK_QM00004 /dev/disk/by-path/pci-0000:00:01.1-scsi-1:0:1:0 UDEV [4.229522] add /devices/pci0000:00/0000:00:01.1 (pci) UDEV_LOG=3 ACTION=add DEVPATH=/devices/pci0000:00/0000:00:01.1 SUBSYSTEM=pci DRIVER=ata_piix PCI_CLASS=10180 PCI_ID=8086:7010 PCI_SUBSYS_ID=1AF4:1100 PCI_SLOT_NAME=0000:00:01.1 MODALIAS=pci:v00008086d00007010sv00001AF4sd00001100bc01sc01i80 SEQNUM=851 UDEV [4.230831] add /devices/pci0000:00/0000:00:01.1/ata1/ata_port/ata1 (ata_port) UDEV_LOG=3 ACTION=add DEVPATH=/devices/pci0000:00/0000:00:01.1/ata1/ata_port/ata1 SUBSYSTEM=ata_port SEQNUM=852 UDEV [4.230937] add /devices/pci0000:00/0000:00:01.1/ata1/link1/ata_link/link1 (ata_link) UDEV_LOG=3 ACTION=add DEVPATH=/devices/pci0000:00/0000:00:01.1/ata1/link1/ata_link/link1 SUBSYSTEM=ata_link SEQNUM=853 UDEV [4.229854] add /devices/pci0000:00/0000:00:01.1/ata1/link1/dev1.0/ata_device/dev1.0 (ata_device) UDEV_LOG=3 ACTION=add DEVPATH=/devices/pci0000:00/0000:00:01.1/ata1/link1/dev1.0/ata_device/dev1.0 SUBSYSTEM=ata_device SEQNUM=854 UDEV [4.229959] add /devices/pci0000:00/0000:00:01.1/ata1/link1/dev1.1/ata_device/dev1.1 (ata_device) UDEV_LOG=3 ACTION=add DEVPATH=/devices/pci0000:00/0000:00:01.1/ata1/link1/dev1.1/ata_device/dev1.1 SUBSYSTEM=ata_device SEQNUM=855 UDEV [4.230742] add /devices/pci0000:00/0000:00:01.1/ata2/ata_port/ata2 (ata_port) UDEV_LOG=3 ACTION=add DEVPATH=/devices/pci0000:00/0000:00:01.1/ata2/ata_port/ata2 SUBSYSTEM=ata_port SEQNUM=856 UDEV [4.230209] add /devices/pci0000:00/0000:00:01.1/ata2/link2/ata_link/l ink2 (ata_link) UDEV_LOG=3 ACTION=add DEVPATH=/devices/pci0000:00/0000:00:01.1/ata2/link2/ata_link/link2 SUBSYSTEM=ata_link SEQNUM=857 UDEV [4.230318] add /devices/pci0000:00/0000:00:01.1/ata2/link2/dev2.0/ata _device/dev2.0 (ata_device) UDEV_LOG=3 ACTION=add DEVPATH=/devices/pci0000:00/0000:00:01.1/ata2/link2/dev2.0/ata_device/dev2.0 SUBSYSTEM=ata_device SEQNUM=858 UDEV [4.230428] add /devices/pci0000:00/0000:00:01.1/ata2/link2/dev2.1/ata_device/dev2.1 (ata_device) UDEV_LOG=3 ACTION=add DEVPATH=/devices/pci0000:00/0000:00:01.1/ata2/link2/dev2.1/ata_device/dev2.1 SUBSYSTEM=ata_device SEQNUM=859 UDEV [4.230531] add /devices/pci0000:00/0000:00:01.1/host1 (scsi) UDEV_LOG=3 ACTION=add DEVPATH=/devices/pci0000:00/0000:00:01.1/host1 SUBSYSTEM=scsi DEVTYPE=scsi_host SEQNUM=860 UDEV [4.230638] add /devices/pci0000:00/0000:00:01.1/host2 (scsi) UDEV_LOG=3 ACTION=add DEVPATH=/devices/pci0000:00/0000:00:01.1/host2 SUBSYSTEM=scsi DEVTYPE=scsi_host SEQNUM=868 UDEV [4.231230] add /devices/pci0000:00/0000:00:01.1/host2/scsi_host/host2 (scsi_host) UDEV_LOG=3 ACTION=add DEVPATH=/devices/pci0000:00/0000:00:01.1/host2/scsi_host/host2 SUBSYSTEM=scsi_host SEQNUM=869 UDEV [4.231140] add /devices/pci0000:00/0000:00:01.1/host2/target2:0:1 (scsi) UDEV_LOG=3 ACTION=add DEVPATH=/devices/pci0000:00/0000:00:01.1/host2/target2:0:1 SUBSYSTEM=scsi DEVTYPE=scsi_target SEQNUM=870 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/818177 Title: boot failures caused by udev race To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/818177/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
