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Description of problem: Add '--partial' to LVM activation code in dracut initramfs to support booting from incomplete VGs (e.g. a mirror volume with a failed/missing leg). Additional info: For more details see bug #498670.
This request was evaluated by Red Hat Product Management for inclusion in a Red Hat Enterprise Linux maintenance release. Product Management has requested further review of this request by Red Hat Engineering, for potential inclusion in a Red Hat Enterprise Linux Update release for currently deployed products. This request is not yet committed for inclusion in an Update release.
Technical note added. If any revisions are required, please edit the "Technical Notes" field accordingly. All revisions will be proofread by the Engineering Content Services team. New Contents: LVM mirrors were not supported as a root device by the dracut initramfs. This enhancement adds support for LVM mirror devices to serve as the root device. Additionally degraded mirrors are used after a certain timeout, when the other half could not be found at booting time.
Tested and fixed in dracut-004-234.el6.noarch: dracut: Scanning devices vda3 vdb1 for LVM logical volumes vg_root/lv_root dracut: Couldn't find device with uuid 1OxUpW-StWs-arT8-uysD-gej0-Do7c-Dcjjs0. dracut: inactive '/dev/vg_root/lv_root' [6.00 GiB] inherit dracut: Couldn't find device with uuid 1OxUpW-StWs-arT8-uysD-gej0-Do7c-Dcjjs0. dracut: Refusing activation of partial LV lv_root. Use --partial to override. dracut: Scanning devices vda3 vdb1 for LVM logical volumes vg_root/lv_root dracut: Couldn't find device with uuid 1OxUpW-StWs-arT8-uysD-gej0-Do7c-Dcjjs0. dracut: inactive '/dev/vg_root/lv_root' [6.00 GiB] inherit dracut: Partial mode. Incomplete logical volumes will be processed. dracut: Couldn't find device with uuid 1OxUpW-StWs-arT8-uysD-gej0-Do7c-Dcjjs0. EXT4-fs (dm-4): mounted filesystem with ordered data mode. Opts: dracut: Mounted root filesystem /dev/mapper/vg_root-lv_root dracut: Loading SELinux policy type=1404 audit(1316610779.536:2): enforcing=1 old_enforcing=0 auid=4294967295 ses=4294967295 type=1403 audit(1316610779.951:3): policy loaded auid=4294967295 ses=4294967295 dracut: dracut: Switching root readahead: starting Welcome to Red Hat Enterprise Linux Server Starting udev: udev: starting version 147
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. http://rhn.redhat.com/errata/RHBA-2011-1521.html