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Old 12-26-2010, 01:30 AM   #1
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Registered: Dec 2010
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Debian 5 mdadm "device or resource busy" raid

Trying to create my first RAID0 in a server.

I installed mdadm fine and all and proceeded to run:
mdadm --create --verbose /dev/md0 --level=stripe --raid-devices=2 /dev/sda /dev/sdb

With sda being my primary hard drive, and sdb being the secondary.

I get this error message upon running the command

"mdadm: chunk size defaults to 64K
mdadm: Cannot open /dev/sda: Device or resource busy
mdadm: create aborted"

I don't know what's wrong!

mdstat says:
"Personalities : [linear] [raid0] [raid1] [raid10] [raid6] [raid5] [raid4] [multipath] [faulty]
unused devices: <none>"

Any ideas?
Old 12-27-2010, 04:52 AM   #2
Registered: Jan 2005
Location: Nice, France
Distribution: Ubuntu,RHES, Mandriva, RHAS, AIX 4.3.3, 5.2 & 5.3, Debian,Solaris8/10
Posts: 119

Rep: Reputation: 20
hmmm, are you booted on one of theses partitions ??


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