Hello.
A couple of years ago I installed two file-servers using kickstart. The server has two 1TB sata disks with two software raid1 partitions as follows:
# cat /proc/mdstat Personalities : [raid1] md1 : active raid1 sdb4[1] sda4[0] 933448704 blocks [2/2] [UU] md0 : active raid1 sdb1[1] sda2[2](F) 40957568 blocks [2/1] [_U]
Now the drives are starting to be failing and next week I'll backup /homes, reinstall OS with kickstart, and finally restore /homes.
There's a problem with how the kickstart process partitions the disks, though. As you may have noticed above, md0 is made up of sdb1 and sda2.
Could anybody help me understand how to make the partitions on the two drives identical still using kickstart?
Here's the relevant part from the kickstart file:
zerombr yes clearpart --all --initlabel bootloader --location=mbr part /boot --fstype ext3 --size 250 --asprimary --ondisk sda part swap --size 2048 --asprimary --ondisk sda part raid.01 --size 40000 --asprimary --ondisk sda part raid.03 --size 1 --grow --asprimary --ondisk sda part /boot2 --fstype ext3 --size 250 --asprimary --ondisk sdb part swap --size 2048 --asprimary --ondisk sdb part raid.02 --size 40000 --asprimary --ondisk sdb part raid.04 --size 1 --grow --asprimary --ondisk sdb raid / --level=1 --device=md0 --fstype ext3 raid.01 raid.02 raid /home --level=1 --device=md1 --fstype ext3 raid.03 raid.04
..but here's the produced partitioning on the two drives:
# parted /dev/sda print Disk geometry for /dev/sda: 0.000-953869.710 megabytes Disk label type: msdos Minor Start End Type Filesystem Flags 1 0.031 251.015 primary ext3 boot 2 251.016 40248.786 primary ext3 raid 3 40248.787 42296.132 primary linux-swap 4 42296.133 953867.219 primary ext3 raid
# parted /dev/sdb print Disk geometry for /dev/sdb: 0.000-953869.710 megabytes Disk label type: msdos Minor Start End Type Filesystem Flags 1 0.031 39997.771 primary ext3 boot, raid 2 39997.771 42045.117 primary linux-swap 3 42045.117 42296.132 primary ext3 4 42296.133 953867.219 primary ext3 raid
I'm not asking because I'm picky, but just because, it would have made my life easier to fix bad blocks on disks by dd from good block on disk1 to bad block on disk2, and as next week I'll reinstall, I'd prefer to do it the right way.
Some more bits about my environment:
# cat /etc/redhat-release CentOS release 4.8 (Final)
# uname -rms Linux 2.6.9-89.0.18.ELsmp i686
Thank you and best regards. Robi