Bugzilla – Bug 818501
md raid occasionally incomplete at startup
Last modified: 2013-05-12 15:41:54 UTC
Created attachment 537943 [details] /proc/mdstat User-Agent: Mozilla/5.0 (X11; Linux i686; rv:20.0) Gecko/20100101 Firefox/20.0 md raid devices sometimes get assembled incompletely at startup for unknown reason. This applies to both desktop computers of mine since I have installed openSUSE12.3. Even the latest updates from May 3th did not solve this problem. I have been using these devices for years with openSUSE, but before 12.3 this fault has never occured. When the fault occurs, the missing partition can be added afterwards to the degraded array by "mdadm --add /dev/md1 /dev/sda3" without problems. I suspect that systemd tries to acticate the raid devices before all disk partitions have been scanned, but have no idea how to fix it. If you provide instructions, I will be glad to do further testing. /proc/mdstat: Personalities : [raid1] [raid0] [raid10] [raid6] [raid5] [raid4] md3 : active (auto-read-only) raid1 sda6[0] sdb6[1] 103412 blocks super 1.0 [2/2] [UU] bitmap: 0/1 pages [0KB], 65536KB chunk md0 : active raid1 sda7[0] sdb7[1] 89617336 blocks super 1.0 [2/2] [UU] bitmap: 0/1 pages [0KB], 65536KB chunk md1 : active (auto-read-only) raid1 sdb3[1] 20482800 blocks super 1.0 [2/1] [_U] bitmap: 0/157 pages [0KB], 64KB chunk md2 : active raid1 sdb2[1] sda2[0] 20482800 blocks super 1.0 [2/2] [UU] bitmap: 1/1 pages [4KB], 65536KB chunk Output of systemctl command related to md devices: sys-devi...ock-md0.device loaded active plugged /sys/devices/virtual/block/md0 sys-devi...ock-md1.device loaded active plugged /sys/devices/virtual/block/md1 sys-devi...ock-md2.device loaded active plugged /sys/devices/virtual/block/md2 sys-devi...ock-md3.device loaded active plugged /sys/devices/virtual/block/md3 /etc/mdadm.conf: DEVICE /dev/sda* /dev/sdb* ARRAY /dev/md1 UUID=10c839d1:c7c910ca:76be2406:eb0790d3 ARRAY /dev/md2 UUID=228828a6:0f4beb07:d5445588:bb63f35b ARRAY /dev/md0 UUID=7bb819f5:e827b8ae:40a32fe0:e9a6cf62 ARRAY /dev/md3 UUID=de1b1ac0:6ab6ff46:9d569c60:76bc7dcf Reproducible: Sometimes Steps to Reproduce: 1. 2. 3.
Sounds like an issue I know very well... *** This bug has been marked as a duplicate of bug 793954 ***
I haven't noticed the other bug report because I searched only for bugs related to openSUSE 12.3, but indeed, it looks very similar. I just applied the changes from comment 30, but unfortunately, the fault occurred quite seldom (perhaps 1 in 100 times) and many starts are required to be confident that it is gone. Thanks for the tip!