Hi,
we are using Red Hat Linux 6.2 on Intel based machines.we are having two
18 GB harddrives and we did Raid 1( Mirroring) during Installation.suppose
if I remove
one of the disk,machine is booting well without any problem.My doubt is if
one of the harddisk fails then how to add the new hardisk in the RAID 1 and
reconstruct the array.
what are configuration files i have to edit and execute command in order to
reconstruct array in the new hardisk.
The following is the /etc/raidtab file
raiddev /dev/md0
raid-level 1
nr-raid-disks 2
chunk-size 64k
persistent-superblock 1
#nr-spare-disks 0
device /dev/sda1
raid-disk 0
device /dev/sdb1
raid-disk 1
raiddev /dev/md1
raid-level 1
nr-raid-disks 2
chunk-size 64k
persistent-superblock 1
#nr-spare-disks 0
device /dev/sda6
raid-disk 0
device /dev/sdb6
raid-disk 1
raiddev /dev/md2
raid-level 1
nr-raid-disks 2
chunk-size 64k
persistent-superblock 1
#nr-spare-disks 0
device /dev/sda7
raid-disk 0
device /dev/sdb7
raid-disk 1
raiddev /dev/md3
raid-level 1
nr-raid-disks 2
chunk-size 64k
persistent-superblock 1
#nr-spare-disks 0
device /dev/sda8
raid-disk 0
device /dev/sdb8
raid-disk 1
I created the same partition in new hardisk and i used dd command to copy
the files from root and boot partition.
dd if=/dev/sda6 of=/dev/sdb6 in order to copy data from the hardisk to new
hardisk partition /dev/sdb6
After that i executed the command
mkraid raidtab -f --only-superblock
when i try to run command there is no superblock option in the command.The
system is not booting from the new hardisk.
I used raidtools-0.90-6.
can you give me a solution for this problem?.if you have any query please
contact me
My ph : 510-670-1710 ext:1252
Thanks
Dhinesh
Alladvantage.com
