Created attachment 356794 [details] Output of emerge --info There is a rarely occuring bug in util-linux-2.21.2 (and probably earlier) with filesystems that are on lvm partitions. It is fixed in 2.22 upstream by the commit commit 3b66f48e23dd0e2a1d7cf318c7698fb192163728 Author: Michal Luscon <mluscon@redhat.com> Date: Wed Feb 29 17:24:40 2012 +0100 sysfs: move blkid_devno_to_wholedisk to sysfs_devno_to_wholedisk Signed-off-by: Michal Luscon <mluscon@redhat.com> Reproduction is a bit challenging, but I wanted to document this in case others found it. Basically, the detection for some of the other raid types, specifically silicon_medley_raid_member use the function blkid_probe_is_wholedisk(). This call in 2.21.2 returns true for lvm partitions. If the filesystem happens to contain this raid member's magic (at offset 0x60 in the last 512-byte block of the partition) of 2F 00 00 00, then it will be detected as a raid member. The result is generally that the system is unbootable, and most people resolve this by reinstalling.
2.24 is stable now
