“Shortcut” For Creating A Software RAID 60?

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CentOS 7 Comments

Hello all,

Testing stuff virtually over here before taking it to the physical servers.

I found a shortcut for creating a software RAID 10 (“–level”), device in CentOS 6.

Looking at the below, I don’t see anything about a shortcut for RAID 60. https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/htm l/Storage_Administration_Guide/s1-raid-levels.html

Is RAID 60 an uncommon RAID-configuration, as compared to RAID 10, and this might be why it’s missing?

Not too cumbersome to first create two RAID 6-arrays, then add them to a RAID 0, but it does take some extra time. Besides, I haven’t found any way to fail a member disk, as is possible to do when using RAID level 10.

Am I missing something here?

7 thoughts on - “Shortcut” For Creating A Software RAID 60?

  • That’s not really a shortcut, per se. RAID10 in Linux is not necessarily similar to RAID1+0. The default, “near” layout is the classic 1+0 layout, but other modes of operation are supported by the RAID10 driver.

    Correct. There’s no such driver.

    If you built a RAID0 array of RAID6 arrays, then you’d fail a disk by marking it failed and removing it from whichever RAID6 array it was a member of, in the same fashion as you’d remove it from any other array type.

  • device in

    Thanks for the clarification. Close enough though, for my intended use!

    You mention modes however. I don’t recall seeing any particular info on that.

    Care to elaborate a bit on that, if it’s not too OT?

    to do

    Aha, thanks!

  • FWIW, what I’ve done in the past is build the raid 6’s with mdraid, then use LVM to stripe them into a volume group.