mdadm error setting up RAID 5
Thomas B. Walter
tbw at geo.hunter.cuny.edu
Tue Jan 2 17:51:22 UTC 2007
After installing RHEL4u4 I need to move a RAID 0 array (12 disks) from
another RHEL4 machine to this new one and configure the array as RAID 5.
All data was backed up and I did an fdisk /dev/sdc1, /dev/sdd1......
/dev/sdn1 on all 12 disks and rebooted the machine.
I then issued the following command:
mdadm --create /dev/md0 --level=5 --raid-devices=12 /dev/sdc1 /dev/sdd1
/dev/sde1 /dev/sdf1 /dev/sdg1 /dev/sdh1 /dev/sdi1 /dev/sdj1 /dev/sdk1 /dev/sdl1 /dev/sdm1 /dev/sdn1
mdadm: /dev/sdc1 appears to contain an ext2fs file system
size=426796032K mtime=Sun Oct 1 22:05:49 2006
mdadm: /dev/sdc1 appears to be part of a raid array:
level=0 devices=12 ctime=Fri Apr 28 13:04:18 2006
mdadm: /dev/sdd1 appears to be part of a raid array:
level=0 devices=12 ctime=Fri Apr 28 13:04:18 2006
mdadm: /dev/sde1 appears to be part of a raid array:
level=0 devices=12 ctime=Fri Apr 28 13:04:18 2006
mdadm: /dev/sdf1 appears to be part of a raid array:
level=0 devices=12 ctime=Fri Apr 28 13:04:18 2006
mdadm: /dev/sdg1 appears to be part of a raid array:
level=0 devices=12 ctime=Fri Apr 28 13:04:18 2006
mdadm: /dev/sdh1 appears to be part of a raid array:
level=0 devices=12 ctime=Fri Apr 28 13:04:18 2006
mdadm: /dev/sdi1 appears to be part of a raid array:
level=0 devices=12 ctime=Fri Apr 28 13:04:18 2006
mdadm: /dev/sdj1 appears to be part of a raid array:
level=0 devices=12 ctime=Fri Apr 28 13:04:18 2006
mdadm: /dev/sdk1 appears to be part of a raid array:
level=0 devices=12 ctime=Fri Apr 28 13:04:18 2006
mdadm: /dev/sdl1 appears to be part of a raid array:
level=0 devices=12 ctime=Fri Apr 28 13:04:18 2006
mdadm: /dev/sdm1 appears to be part of a raid array:
level=0 devices=12 ctime=Fri Apr 28 13:04:18 2006
mdadm: /dev/sdn1 appears to be part of a raid array:
level=0 devices=12 ctime=Fri Apr 28 13:04:18 2006
Continue creating array? y
mdadm: ADD_NEW_DISK for /dev/sdc1 failed: Device or resource busy
[root at hypatia raid]#
Googling the ADD_NEW_DISK error didn't get me much. Any suggestions on
where to go from here?
Thanks.
Thomas Walter
Geography & Computer Science Departments
Hunter College of the City University of New York
695 Park Avenue
New York, NY 10021
(212)772-5457 Office
(212)772-5268 Fax
twalter at hunter.cuny.edu
http://geography.hunter.cuny.edu/~tbw
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