[packages/kernel/LINUX_3_4] - raid6 fix applied upstream

baggins baggins at pld-linux.org
Tue Oct 7 21:54:11 CEST 2014


commit 9bf24434351fee20cd2396161356806054ce5181
Author: Jan Rękorajski <baggins at pld-linux.org>
Date:   Tue Oct 7 21:53:52 2014 +0200

    - raid6 fix applied upstream

 kernel-small_fixes.patch | 43 -------------------------------------------
 1 file changed, 43 deletions(-)
---
diff --git a/kernel-small_fixes.patch b/kernel-small_fixes.patch
index 8926a44..a404a7a 100644
--- a/kernel-small_fixes.patch
+++ b/kernel-small_fixes.patch
@@ -146,46 +146,3 @@ Hi all,
 
 NeilBrown
 
-From f94e37dce722ec7b6666fd04be357f422daa02b5 Mon Sep 17 00:00:00 2001
-From: NeilBrown <neilb at suse.de>
-Date: Wed, 13 Aug 2014 09:57:07 +1000
-Subject: [PATCH] md/raid6: avoid data corruption during recovery of
- double-degraded RAID6
-
-During recovery of a double-degraded RAID6 it is possible for
-some blocks not to be recovered properly, leading to corruption.
-
-If a write happens to one block in a stripe that would be written to a
-missing device, and at the same time that stripe is recovering data
-to the other missing device, then that recovered data may not be written.
-
-This patch skips, in the double-degraded case, an optimisation that is
-only safe for single-degraded arrays.
-
-Bug was introduced in 2.6.32 and fix is suitable for any kernel since
-then.  In an older kernel with separate handle_stripe5() and
-handle_stripe6() functions that patch must change handle_stripe6().
-
-Cc: stable at vger.kernel.org (2.6.32+)
-Fixes: 6c0069c0ae9659e3a91b68eaed06a5c6c37f45c8
-Cc: Yuri Tikhonov <yur at emcraft.com>
-Cc: Dan Williams <dan.j.williams at intel.com>
-Reported-by: "Manibalan P" <pmanibalan at amiindia.co.in>
-Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1090423
-Signed-off-by: NeilBrown <neilb at suse.de>
-
-diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
-index 6b2d615d1094..183588b11fc1 100644
---- a/drivers/md/raid5.c
-+++ b/drivers/md/raid5.c
-@@ -3817,6 +3817,8 @@ static void handle_stripe(struct stripe_head *sh)
- 				set_bit(R5_Wantwrite, &dev->flags);
- 				if (prexor)
- 					continue;
-+				if (s.failed > 1)
-+					continue;
- 				if (!test_bit(R5_Insync, &dev->flags) ||
- 				    ((i == sh->pd_idx || i == sh->qd_idx)  &&
- 				     s.failed == 0))
-
-
================================================================

---- gitweb:

http://git.pld-linux.org/gitweb.cgi/packages/kernel.git/commitdiff/9bf24434351fee20cd2396161356806054ce5181



More information about the pld-cvs-commit mailing list