I have the very same problem and it freaks me out because i cannot return to the much older kernel that woud boot. *I kindly request some guidance to a temporary manual fix.* The mapper-ID (isw_****) seems to change from time to time. I don't know if that stems from the Ubuntu (Studio 14.04 LTS) installation or, possibly, from Intels RAID rebuild code that is launched via the Windows OS e.g. after power loss. _____ blausand@Utopon ~> cat /proc/cmdline BOOT_IMAGE=/vmlinuz-3.2.0-67-generic root=UUID=57907805-da9f-4d85-9c49-71807a97c4c0 ro nosplash blausand@Utopon ~> cat /proc/version Linux version 3.2.0-67-generic (buildd@brownie) (gcc version 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5) ) #101-Ubuntu SMP Tue Jul 15 17:46:11 UTC 2014
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1358491 Title: [Trusty] fails to boot with kernels later than v3.11: systemd- udevd[133]: conflicting device node Status in linux package in Ubuntu: In Progress Bug description: I have a lab server named 'caddy' that is used for data recovery and forensics of disk drives. It has hot-swap drive bays for various disk interface types. Amongst others it has a Promise FasTrak TX2000 IDE 'fake' RAID controller. It was upgraded from Saucy to Trusty. After the upgrade the server fails to boot using kernel version 3.13.0-24-generic during early udev whilst still in the initrd. Errors of the form: [ 6.989549] systemd-udevd[137]: inotify_add_watch(7, /dev/sdi2, 10) failed: No such file or directory ... [ 7.092733] systemd-udevd[133]: conflicting device node '/dev/mapper/pdc_ecjaiecgch1' found, link to '/dev/dm-2' will not be created are reported for some devices, usually the Promise 'fake' RAID devices. The system hangs at that point without ever dropping to a busybox shell. Starting with an earlier Saucy kernel version 3.11.0-12-generic allows the server to start successfully. After some research it appears that maybe this is due to an incompatibility between systemd-udevd and device-mapper and/or dmraid- activate. I read in a similar Fedora bug report a comment by Kay Seivers: https://bugzilla.redhat.com/show_bug.cgi?id=867593#c11 "Device-mapper seems to mknod() things in /dev, which just can not work correctly today. There is nothing udev can fix here, it will never touch any device node, which should not exist in the first place, that is in the way." I've tried breaking initrd, but unless it is done at 'top' udevd starts and the system hits this problem. Serial console logs of the failed and successful boot attempts are attached To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1358491/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp