[BlueOnyx:02865] Re: raid 10

[Jeff Folk]

On Nov 12, 2009, at 1:45 PM, Gerald Waugh wrote:
>
> On Thu, 2009-11-12 at 12:44 -0600, Jeff Folk wrote:
>> I've got 4 SATA HD and I'm pretty sure the installer asked about RAID
>> 1+0 (which I would have chosen)... How might I verify?
>
> cat /etc/proc/mdstat
> and you might look at
> /etc/raidtab if it exist
>
> Gerald

I guess I don't... Don't see a RAID 10 personality.

[root at box1 ~]# cat /proc/mdstat
Personalities : [raid1]
md0 : active raid1 sdd1[3] sdc1[2] sdb1[1] sda1[0]
       256896 blocks [4/4] [UUUU]

md2 : active raid1 sdd2[1] sdb2[0]
       312311552 blocks [2/2] [UU]

md1 : active raid1 sdc2[1] sda2[0]
       312311552 blocks [2/2] [UU]

unused devices: <none>

[root at box1 ~]# cat /etc/raidtab
raiddev /dev/md0
	raid-level		1
	nr-raid-disks		4
	persistent-superblock	1
	chunk-size		0
	device		/dev/sdd1
	raid-disk		3
	device		/dev/sdc1
	raid-disk		2
	device		/dev/sdb1
	raid-disk		1
	device		/dev/sda1
	raid-disk		0
raiddev /dev/md1
	raid-level		1
	nr-raid-disks		2
	persistent-superblock	1
	chunk-size		0
	device		/dev/sdc2
	raid-disk		1
	device		/dev/sda2
	raid-disk		0
raiddev /dev/md2
	raid-level		1
	nr-raid-disks		2
	persistent-superblock	1
	chunk-size		0
	device		/dev/sdd2
	raid-disk		1
	device		/dev/sdb2
	raid-disk		0