[LU-3176] linux md raid-6 read-error correction in degraded state Created: 15/Apr/13  Updated: 15/Oct/14  Resolved: 15/Oct/14

Status: Resolved
Project: Lustre
Component/s: None
Affects Version/s: Lustre 1.8.9
Fix Version/s: None

Type: Bug Priority: Critical
Reporter: Shuichi Ihara (Inactive) Assignee: Yang Sheng
Resolution: Fixed Votes: 0
Labels: patch
Environment:

CentOS5.x/RHEL5.x, Linux MD Raid


Severity: 3
Rank (Obsolete): 7743

 Description   

md raid6 is not doing correct read-error when single disk failed and going to be degraded mode for one more drive. I think original code only considered raid5, but did't work for raid6.
This is fixed in mainstream linux kernel.
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=87aa63000c484b



 Comments   
Comment by Peter Jones [ 16/Apr/13 ]

YangSheng

Could you please help with this issue?

Thanks

Peter

Comment by Shuichi Ihara (Inactive) [ 16/Apr/13 ]

pushed patch for b1_8.
http://review.whamcloud.com/6060

Comment by Yang Sheng [ 15/Oct/14 ]

Close as RedHat kernel already included this change.

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