linux-ext4 - [PATCH] e2fsck: ignore differing NEEDS

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Date:	Sat, 22 Nov 2008 09:02:48 -0600
From:	Eric Sandeen <sandeen@...hat.com>
To:	ext4 development <linux-ext4@...r.kernel.org>
Subject: [PATCH] e2fsck: ignore differing NEEDS_RECOVERY flag on backup sbs

This is for RH bugzilla 471925 -  Complete scan of filesystems expanded online

When we resize online, the primary superblock gets copied to all
the backups, and of course since we're mounted the NEEDS_RECOVERY
flag is set.  A subsequent fsck will find the backups have the
NEEDS_RECOVERY flag set while the primary does not, and this
forces a full fsck pass.

I think this flag can be safely ignored in the flag comparisons.

Signed-off-by: Eric Sandeen <sandeen@...hat.com>
---

Index: e2fsprogs/e2fsck/super.c
===================================================================
--- e2fsprogs.orig/e2fsck/super.c	2008-11-22 07:54:47.000000000 -0600
+++ e2fsprogs/e2fsck/super.c	2008-11-22 08:59:45.953060973 -0600
@@ -860,7 +860,8 @@ void check_super_block(e2fsck_t ctx)
  * try to discourage it in the future.  In particular, for the newer
  * ext4 files, especially EXT4_FEATURE_RO_COMPAT_DIR_NLINK and
  * EXT3_FEATURE_INCOMPAT_EXTENTS.  So some of these may go away in the
- * future.
+ * future.  EXT3_FEATURE_INCOMPAT_RECOVER may also get set when
+ * copying the primary superblock during online resize.
  *
  * The kernel will set EXT2_FEATURE_COMPAT_EXT_ATTR, but
  * unfortunately, we shouldn't ignore it since if it's not set in the
@@ -869,7 +870,8 @@ void check_super_block(e2fsck_t ctx)
  */
 #define FEATURE_RO_COMPAT_IGNORE	(EXT2_FEATURE_RO_COMPAT_LARGE_FILE| \
 					 EXT4_FEATURE_RO_COMPAT_DIR_NLINK)
-#define FEATURE_INCOMPAT_IGNORE		(EXT3_FEATURE_INCOMPAT_EXTENTS)
+#define FEATURE_INCOMPAT_IGNORE		(EXT3_FEATURE_INCOMPAT_EXTENTS| \
+					 EXT3_FEATURE_INCOMPAT_RECOVER)
 
 int check_backup_super_block(e2fsck_t ctx)
 {

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