Hi, I am facing an issue with mdadm on Ubuntu Jaunty 9.04 Server 64-bit edition. Host: - Dual quad-core Xeon 5450 3.0 GHz CPUs - 16 GB RAM - Ubuntu 9.04 server (2.6.28-11) - mdadm 2.6.7.1 - LSI 3801E controller with 12 x Seagate Cheetah 15K.5 300GB drives I am trying to create a RAID 0 md device from two of the 15K.5 drives. When I boot my Host, it seems like there is some legacy md data in /proc/mdstat. However, /etc/mdadm.conf is empty. root@JAUNTY:~# cat /proc/mdstat Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10] md_d1 : inactive sdx[1](S) 292968640 blocks md_d0 : inactive sdj[3](S) sdm[0](S) sdf[7](S) sdg[6](S) 1171874560 blocks unused devices: <none> I proceed to stop and remove these md devices and use /proc/mdstat to verify that they were removed. root@JAUNTY:~# mdadm -S /dev/md_d1 mdadm: stopped /dev/md_d1 root@JAUNTY:~# mdadm -S /dev/md_d0 mdadm: stopped /dev/md_d0 root@JAUNTY:~# mdadm -r /dev/md_d1 root@JAUNTY:~# mdadm -r /dev/md_d0 root@JAUNTY:~# cat /proc/mdstat Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10] unused devices: <none> Now it appears that the md devices are removed. I then try to create an md device: root@JAUNTY:~# mdadm -C -f -e 1.0 -R /dev/md0 -l 0 -n 2 -c 64 /dev/sdd /dev/sdg mdadm: /dev/sdg appears to be part of a raid array: level=raid0 devices=8 ctime=Sun Mar 22 23:22:03 2009 mdadm: array /dev/md0 started. root@JAUNTY:~# cat /proc/mdstat Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10] md0 : active raid0 sdg[1] sdd[0] 585937408 blocks super 1.0 64k chunks unused devices: <none> Why does mdadm report /dev/sdg as part of a raid array? I removed all the md devices as shown above. Thank you for your help! Thanks! -Thomas -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
