Remove Software RAID 1, Without Format.

5 Feb 2010

Hello,

I am trying to remove my RAID 1 Software in Linux CentOs 5.4 and got some issue hope somebody can help me.

When i try to stop the array i got the error:

Code:

# mdadm --stop /dev/md*

mdadm: fail to stop array /dev/md0: Device or resource busy

Perhaps a running process, mounted filesystem or active volume group?

mdadm: stopped /dev/md1

mdadm: fail to stop array /dev/md2: Device or resource busy

Perhaps a running process, mounted filesystem or active volume group?

So i tried to umount it first, but i could not.

Code:

# umount /dev/md0

umount: /dev/md0: not mounted

What should i do?

Thanks

Some more info:

Code:

# fdisk -l
Disk /dev/sda: 750.1 GB, 750156374016 bytes

255 heads, 63 sectors/track, 91201 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes
   Device Boot      Start         End      Blocks   Id  System

/dev/sda1               1         523     4200997   fd  Linux raid autodetect

/dev/sda2             524         785     2104515   fd  Linux raid autodetect

/dev/sda3             786       91201   726266520   fd  Linux raid autodetect
Disk /dev/sdb: 750.1 GB, 750156374016 bytes

255 heads, 63 sectors/track, 91201 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes
   Device Boot      Start         End      Blocks   Id  System

/dev/sdb1               1         523     4200997   fd  Linux raid autodetect

/dev/sdb2             524         785     2104515   fd  Linux raid autodetect

/dev/sdb3             786       91201   726266520   fd  Linux raid autodetect
Disk /dev/md2: 743.6 GB, 743696826368 bytes

2 heads, 4 sectors/track, 181566608 cylinders

Units = cylinders of 8 * 512 = 4096 bytes
Disk /dev/md2 doesn't contain a valid partition table
Disk /dev/md0: 4301 MB, 4301717504 bytes

2 heads, 4 sectors/track, 1050224 cylinders

Units = cylinders of 8 * 512 = 4096 bytes

Disk /dev/md0 doesn't contain a valid partition table

Code:

# cat /proc/mdstat

Personalities : [raid1] [raid10] [raid0] [raid6] [raid5] [raid4]

md0 : active raid1 sdb1[1] sda1[0]

      4200896 blocks [2/2] [UU]
md2 : active raid1 sdb3[1] sda3[0]

      726266432 blocks [2/2] [UU]

unused devices: <none>

For more information click here.

Tags: array, autodetect, code, dev, device, device boot, Disk, fd, fdisk, linux, md1, mdadm, nbsp, nbsp nbsp nbsp nbsp nbsp, raid, raid 1 software, resource, sda, sdb, sectors, track, umount, volume group

HostGator Coupon Code

Remove Software RAID 1, Without Format.

Comment Form

About this blog

Categories

Archives