Public bug reported: I have created a RAID 5 array, md0, using mdadm including three whole disks, sdb, sdc and sdd, like this:
mdadm --create /dev/md0 --level=5 --raid-devices=3 /dev/sdb /dev/sdc /dev/sdd The RAID array works just fine and automounting using /etc/fstab works fine too. There is a bug with how some applications like palimpsest recognise the member drives, which disappears when the array is restarted. Upon booting, and having the array autostarted: - sdb is a 'RAID Component' (this is correct) - sdc and sdd are both: ----- 1.0TB capacity at the top ----- 2.0TB capacity at the bottom ----- with a 1.0TB ext4 partition 'raid' ----- '18446743 TB (-1,000,204,443,648 bytes)' free space at the end - the 'Places' menu has two unmountable volumes 'raid' which are presumably sdc and sdd Weird? When restarting the array (unmount, stop array, start array): - sdb, sdc and sdd are all 'RAID Component' disks (this is correct) - the 'Places' menu does not have any single disks' entries (this is correct) Pictures: http://i.imgur.com/Szh54.png -- palimpsest md0 http://i.imgur.com/mdxAz.png -- before restarting array, palimpsest on sdb (correct) http://i.imgur.com/xQwb9.png -- before restarting array, palimpsest on sdc (bad behaviour) http://i.imgur.com/cYALj.png -- before restarting array, palimpsest on sdd (bad behaviour) http://i.imgur.com/oI8nA.png -- after restarting array, palimpsest on sdb (correct) http://i.imgur.com/J35HF.png -- after restarting array, palimpsest on sdc (correct) http://i.imgur.com/U0cAy.png -- after restarting array, palimpsest on sdd (correct) ** Affects: ubuntu Importance: Undecided Status: New ** Description changed: I have created a RAID 5 array, md0, using mdadm including three whole disks, sdb, sdc and sdd, like this: mdadm --create /dev/md0 --level=5 --raid-devices=3 /dev/sdb /dev/sdc /dev/sdd The RAID array works just fine and automounting using /etc/fstab works fine too. There is a bug with how some applications like palimpsest recognise the member drives, which disappears when the array is restarted. Upon booting, and having the array autostarted: - sdb is a 'RAID Component' (this is correct) - sdc and sdd are both: ----- 1.0TB capacity at the top ----- 2.0TB capacity at the bottom ----- with a 1.0TB ext4 partition 'raid' ----- '18446743 TB (-1,000,204,443,648 bytes)' free space at the end - the 'Places' menu has two unmountable volumes 'raid' which are presumably sdc and sdd Weird? When restarting the array (unmount, stop array, start array): - sdb, sdc and sdd are all 'RAID Component' disks (this is correct) - the 'Places' menu does not have any single disks' entries (this is correct) Pictures: - http://i.imgur.com/U0cAy.png -- palimpsest md0 - http://i.imgur.com/Szh54.png -- before restarting array, palimpsest on sdb (correct) - http://i.imgur.com/mdxAz.png -- before restarting array, palimpsest on sdc (bad behaviour) - http://i.imgur.com/xQwb9.png -- before restarting array, palimpsest on sdd (bad behaviour) - http://i.imgur.com/cYALj.png -- after restarting array, palimpsest on sdb (correct) - http://i.imgur.com/oI8nA.png -- after restarting array, palimpsest on sdc (correct) - http://i.imgur.com/J35HF.png -- after restarting array, palimpsest on sdd (correct) + http://i.imgur.com/Szh54.png -- palimpsest md0 + http://i.imgur.com/mdxAz.png -- before restarting array, palimpsest on sdb (correct) + http://i.imgur.com/xQwb9.png -- before restarting array, palimpsest on sdc (bad behaviour) + http://i.imgur.com/cYALj.png -- before restarting array, palimpsest on sdd (bad behaviour) + http://i.imgur.com/oI8nA.png -- after restarting array, palimpsest on sdb (correct) + http://i.imgur.com/J35HF.png -- after restarting array, palimpsest on sdc (correct) + http://i.imgur.com/U0cAy.png -- after restarting array, palimpsest on sdd (correct) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/689600 Title: RAID 5 array bug without an interesting name -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
