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

John Pham jhnphm at gmail.com
Sat Nov 16 17:58:44 UTC 2013


Public bug reported:

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.

** Affects: dmraid (Ubuntu)
     Importance: Undecided
         Status: New

** Patch added: "Remove assumption that Intel RAID0 has a minimum of 2 drives."
   https://bugs.launchpad.net/bugs/1251881/+attachment/3910647/+files/dmraid-activate.patch

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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:
  New

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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