[Bug 1251881] Re: dmraid-activate does not work on SRT cache drives

[Phillip Susi]

I don't see how this change will make it work.  The problem is not
simply with dmraid-activate and the number of drives in the set, but the
fact that dmraid and device-mapper do not know anything about the format
of the intel cache system, so they can not use such a drive.


** Changed in: dmraid (Ubuntu)
       Status: New => Incomplete

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https://bugs.launchpad.net/bugs/1251881

Title:
  dmraid-activate does not work on SRT cache drives

Status in “dmraid” package in Ubuntu:
  Incomplete

Bug description:
  Intel Smart Response creates a 1 drive "RAID0" on the cache drive, and
  puts the SSD data partitions on top. It also converts the accelerated
  drive to a 1-drive RAID0.

  The dmraid-activate script assumes all RAID0 instances  must have at
  least 2 drives, and fails to activate without printing any error
  messages, assuming drives are still coming online. This is
  particularly problematic in a dual-boot situation where Windows
  configures the SSD as cache with Intel SRT.

  Attached is a patch to fix this.

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