My server was in 8.04 LTS, having a raid 1 setup with 2 mirrored harddisk. I have tested, if I unplug one of the disk, the raid 1 was working fine.
Sadly, after upgraded my system to 10.04.1 LTS, if I unplug one of the disk and boot, the raid 1 become inactive. #mdadm --detail /dev/md0 mdadm: md device /dev/md0 does not appear to be active. # cat /proc/mdstat md0 : inactive sdb1[0](S) I have removed some of the messages to save space here. In the above case, I have unplug the sdc, the raid 1 is not working anymore. It treated the sdb as spare disk. If I plug back the sdc, the raid 1 will be back to normal. It doesn't make any sense. Honestly, I am not a real expert in system admin. I implemented the software raid is simply to protect my data in case of a harddisk failure. Now I need to pray for both disk working in order for this raid 1 keeping a live..... really frustrating. MAY I KNOW, what I need to do to fix this problem? Thank you very much! -- You received this bug notification because you are a member of Ubuntu Server Team, which is a subscriber of a duplicate bug (125471). https://bugs.launchpad.net/bugs/120375 Title: cannot boot raid1 with only one disk -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
