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Old 11-20-2007, 05:00 AM   #1
Registered: Jul 2007
Location: Penang , Malaysia.
Distribution: red hat linux
Posts: 133

Rep: Reputation: 15
Smile rhel5 raid device cannot remove, no /etc/mdadm.conf file?

Hi, when i am during install rhel5(Red hat linux enterprise 5) i not setup Raid drive. Than after finish installed, i only configure a testing raid, ok when i am create a raid partition,i am using command "mdadm" than i success create a level=0 raid device name is /dev/md0 in physical harddisk partition /dev/sda7 and /dev/sda8. After that i just want to remove this /dev/md0, i dont know what is the correct method to remove it, so i just use fdisk to delete partition /dev/sda7 & /dev/sda8. I reboot system, than i issue command # cat /proc/mdstat so no any raid infomation there.OK, now i want to create a raid level=1 , so i fdisk two partition /dev/sda7 & /dev/sda8 as fd(software raid), when i want to create the raid drive /dev/md0, but before i create why it automatic have the drive already on /dev/md0? i already remove using fdisk. Please teach me a way how to correctly remove software raid device like /dev/md0 ,/dev/md1 we are create.

Thank you.
Old 11-20-2007, 06:08 AM   #2
Tahir Saleh
LQ Newbie
Registered: Apr 2007
Posts: 19

Rep: Reputation: 0
try to use
$mdadm -S /dev/md0
if the device is appearing in
cat /proc/partitions meaning if md0 is listed in device list.

Last edited by Tahir Saleh; 11-20-2007 at 06:47 AM.


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