With RHEL-6.3 kernel, writes to RAID-4/5/6 while the array is reconstructing could hang the system

Solution Unverified - Updated -

Issue

The RHEL6.3 release notes contain this curious entry

http://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/6/html/6.3_Technical_Notes/kernel_issues.html

kernel component

  Due to a race condition, in certain cases, writes to RAID4/5/6 while the array is reconstructing could hang the system

Environment

  • Red Hat Enterprise Linux 6
  • mdraid

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