Topic: Create RAID 1+0

[smnirosh]

Hi everyone, I have HP server which is to be installed smeserver 9.2 and it is without RAID support but has 4 hard disks of 146GB on each.
I want to know how to configure software RAID 1+0 with sme server when installing Smeserver 9.1 as Advanced Installation options using Graphical installer options selected?

I will install this Server from the begining formatting all the hard disks.

[smnirosh]

?

[Stefano]

I think no one here has such a setup and then the only answer I can give you is to... try

if you've the possibility, use a VM with 4 disks and follow centos' setup guide (plenty of them out there)

when you'll done, repeat the procedure on the physical machine

[Stefano]

searching a bit with google I'd say you can do it using the GUI, just remember that the /boot partition can't be in a RAID10 array, so you need a RAID1 array for it

[Stefano]

if you manage to setup SME using the GUI with native RAID10, please share your steps, thank you

[smnirosh]

Ok thanks for the reply. I will setup my VM for the test and let you know

[jameswilson]

I did it like this

[root@sme-virtualbox ~]# cat /proc/mdstat
Personalities : [raid10] [raid1]
md0 : active raid1 sdc1[2] sde1[4] sdd1[3] sdb1[1] sda1[6] sdf1[5]
      255936 blocks super 1.0 [6/6] [UUUUUU]

md2 : active raid10 sdc3[2] sdd3[3] sde3[4] sdb3[1] sdf3[5]
      5853235200 blocks super 1.1 512K chunks 2 near-copies [6/5] [_UUUUU]
      bitmap: 22/44 pages [88KB], 65536KB chunk

md1 : active raid10 sdc2[2] sdd2[3] sde2[4] sdb2[1] sdf2[5] sda2[6]
      6140928 blocks super 1.1 512K chunks 2 near-copies [6/6] [UUUUUU]

unused devices: <none>

But just noticed I have an issue lol

[jameswilson]

just incase this is searched for in the future

mdadm /dev/md2 --add /dev/sda3

now

[root@sme-virtualbox ~]# cat /proc/mdstat
Personalities : [raid10] [raid1]
md0 : active raid1 sdc1[2] sde1[4] sdd1[3] sdb1[1] sda1[6] sdf1[5]
      255936 blocks super 1.0 [6/6] [UUUUUU]

md2 : active raid10 sda3[6] sdc3[2] sdd3[3] sde3[4] sdb3[1] sdf3[5]
      5853235200 blocks super 1.1 512K chunks 2 near-copies [6/5] [_UUUUU]
      [>....................]  recovery =  2.0% (39603712/1951078400) finish=155.3min speed=205008K/sec
      bitmap: 22/44 pages [88KB], 65536KB chunk

md1 : active raid10 sdc2[2] sdd2[3] sde2[4] sdb2[1] sdf2[5] sda2[6]
      6140928 blocks super 1.1 512K chunks 2 near-copies [6/6] [UUUUUU]

unused devices: <none>