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[Bug 178321] LVM snapshot creation fails
  • From: bugzilla_noreply@xxxxxxxxxx
  • Date: Wed, 1 Nov 2006 13:51:59 -0700 (MST)
  • Message-id: <20061101205159.C9E82F39@xxxxxxxxxxxxxxxxxxxxxx>
https://bugzilla.novell.com/show_bug.cgi?id=178321





------- Comment #40 from kernel01@xxxxxxxxxxxxxx 2006-11-01 13:51 MST -------
Sorry about that.

The modified udev rules do not create /dev/disk/by-{id,label,uuid} symlinks
anymore because "dm-*" devices are ignored. Mount-by-{label,id,uuid} depends on
these symlinks.
If your root filesystem is on LVM and is mounted by label, the root filesystem
will not be found during boot.

The reason I didn't notice this earlier was that I had only updated udev and
not the kernel, so the new udev rules did not end up in the initrd until I
updated the kernel two days ago which triggered an initrd rebuild with the new
udev rules.

If you want to reproduce, have the following line in your /etc/fstab:
LABEL=LVM_Root / reiserfs noatime,acl,user_xattr 1 1

linux # ls -l /dev/disk/by-label/LVM_Root
lrwxrwxrwx 1 root root 10 2006-11-01 22:42 /dev/disk/by-label/LVM_Root ->
./../dm-0


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