How to break Raid 1 on centos

Novisoft

Active Member
Jun 6, 2003
42
0
156
Algiers, Algeria.
cPanel Access Level
Root Administrator
Hello,

I would like to break RAID-1 on Centos. I prefere using 2 separate disks and cpanel backup instead of raid 1 but I am looking for the exact steps to do that.

I am able to boot the server in rescue mode if necessary.

Below some outputs :

Code:
[email protected] [~]# df -h
Filesystem            Size  Used Avail Use% Mounted on
rootfs                 97G  4.5G   88G   5% /
/dev/root              97G  4.5G   88G   5% /
devtmpfs               16G  252K   16G   1% /dev
/dev/md3              1.7T  235M  1.6T   1% /home
tmpfs                  16G     0   16G   0% /dev/shm
/dev/loop0            886M   18M  824M   3% /tmp
/dev/loop0            886M   18M  824M   3% /var/tmp

===

[email protected] [~]# fdisk -l

WARNING: GPT (GUID Partition Table) detected on '/dev/sda'! The util fdisk doesn't support GPT. Use GNU Parted.


Disk /dev/sda: 2000.4 GB, 2000398934016 bytes
255 heads, 63 sectors/track, 243201 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1               1      243202  1953514583+  ee  GPT

WARNING: GPT (GUID Partition Table) detected on '/dev/sdb'! The util fdisk doesn't support GPT. Use GNU Parted.


Disk /dev/sdb: 2000.4 GB, 2000398934016 bytes
255 heads, 63 sectors/track, 243201 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000

   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1               1      243202  1953514583+  ee  GPT

Disk /dev/md3: 1864.1 GB, 1864079704064 bytes
2 heads, 4 sectors/track, 455097584 cylinders
Units = cylinders of 8 * 512 = 4096 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000


Disk /dev/md2: 104.9 GB, 104856485888 bytes
2 heads, 4 sectors/track, 25599728 cylinders
Units = cylinders of 8 * 512 = 4096 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000

===

[email protected] [~]# more /etc/fstab
# <file system> <mount point>   <type>  <options>       <dump>  <pass>
/dev/md2        /       ext3    errors=remount-ro,usrjquota=quota.user,jqfmt=vfsv0      0       1
/dev/md3        /home   ext3    defaults        1       2
/dev/sda4       swap    swap    defaults        0       0
/dev/sdb4       swap    swap    defaults        0       0
proc            /proc   proc    defaults                0       0
sysfs           /sys    sysfs   defaults                0       0
tmpfs           /dev/shm        tmpfs   defaults        0       0
devpts          /dev/pts        devpts  defaults        0       0


Thanks in advance for your precious help,
Lyes
 

cPanelMichael

Administrator
Staff member
Apr 11, 2011
47,913
2,201
363
Hello :)

This is more of a filesystem issue and not necessarily related to the cPanel software. You will likely receive better input by searching for guides on this on a search engine or checking on a forum dedicated to discussions of RAID. For instance, searching "how to break raid1" on Google yields several results that you might find useful.

Thank you.