Red Hat Bugzilla – Bug 247946
Kernel panic at boot when LVM root shapshot is full
Last modified: 2013-02-28 23:05:49 EST
From Bugzilla Helper: User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.8.1.4) Gecko/20070603 Fedora/2.0.0.4-2.fc7 Firefox/2.0.0.4 Description of problem: When an lvm snapshot is created of the root filesystem and this snapshot gets full, then the machine hangs with a kernel panic at boot time. Version-Release number of selected component (if applicable): lvm-2.02.24-1.fc7 kernel-2.6.21-1.3228.fc7 How reproducible: Always Steps to Reproduce: 1. lvcreate -s -n fglrx_test -L 100M /dev/VolGroup00/LogVol00 2. <use the machine until the shapshot is full> 3. reboot Actual Results: Kernel panic: Reading all physical volumes. This may take a while... device-mapper: table: 253:3: snapshot: Failed to read shapshot metadata device-mapper: reload ioctl failed: Invalid argument mount: could not find filesystem '/dev/root' setuproot: moving /dev failed: No such file or directory setuproot: error mounting /proc: No such file or directory setuproot: mount failed: No such file or directory Kernel panic - not syncing: Attempted to kill init! Expected Results: A normal boot Additional info: -
Patch in the way to stable kernel. For reference here: http://www.kernel.org/pub/linux/kernel/people/agk/patches/2.6/editing/dm-snapshot-permit-invalid-activation.patch
Fixed since kernel 2.6.22.2 (in f7 updates and rawhide).