I'm experiencing something somewhat similar on a home server of ours. The four partitions (/, /boot. /home, /var) are all MD RAID1 arrays.
On a reboot yesterday morning, the MD array /boot was on failed to start. This morning, it was the /home array. When I logged in this morning, /home was not mounted. The reason was that the MD array was down: ga...@robin:/$ sudo mdadm --detail /dev/md3 /dev/md3: Version : 00.90 Creation Time : Mon Sep 18 23:27:46 2006 Raid Level : raid1 Used Dev Size : 292439104 (278.89 GiB 299.46 GB) Raid Devices : 2 Total Devices : 2 Preferred Minor : 3 Persistence : Superblock is persistent Update Time : Thu May 6 23:43:34 2010 State : active, Not Started Active Devices : 2 Working Devices : 2 Failed Devices : 0 Spare Devices : 0 UUID : 0019b5ec:1ad12c80:0df67ddf:f4706d12 Events : 0.4177842 Number Major Minor RaidDevice State 0 8 7 0 active sync /dev/sda7 1 8 23 1 active sync /dev/sdb7 I then ran: ga...@robin:/$ sudo mdadm --stop /dev/md3 mdadm: stopped /dev/md3 ga...@robin:/$ sudo mdadm --assemble /dev/md3 mdadm: /dev/md3 has been started with 2 drives. mounted the drive and all was well. However, there definitely seems to be some problem with the MD raid arrays. Any suggestions for what to look at. I found this bug via this thread which seems to have some more people seeing similar issues: http://ubuntuforums.org/showthread.php?p=9240332 Gavin -- Mdadm array fails to assemble on boot. https://bugs.launchpad.net/bugs/573477 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs