[CentOS] RAID-10 vs Nested (RAID-0 on 2x RAID-1s)
tnelson at rockbochs.com
Fri Mar 30 10:36:36 EDT 2012
----- Original Message -----
> On Thu, 2012-03-29 at 16:49 -0500, Tim Nelson wrote:
> > [root at c6r10tester ~]# mdadm --detail /dev/md1
> > /dev/md1:
> > Version : 1.1
> > Creation Time : Thu Mar 29 16:14:17 2012
> > Raid Level : raid10
> > Layout : near=2
> > Chunk Size : 512K
> > Am I overthinking this? Does the kernel handle the mirror/stripe
> > configuration under the hood, simply presenting me with a magical
> > RAID10 array? Or, is this something different and I really should be
> > performing the RAID creation manually as noted in option #1?
> Two resources to look at are:
> 1) Wikipedia "Linux MD RAID 10"
> 2) mdadm manpage section for --layout= (the raid10 part)
> "Finally, the layout options for RAID10 are one of ’n’, ’o’ or ’f’..."
> The key to understanding your setup is mdadm --detail "Layout:
> The cited Wikipedia reference for a "standard near layout" describes
> your situation.
This is exactly the info I needed. Thank you for pointing me to it!
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