On Wed, 11 Jul 2007 18:14:25 -0400
Theodore Tso <tytso@xxxxxxx> wrote:
> On Wed, Jul 11, 2007 at 12:30:04AM -0500, Jose R. Santos wrote:
> > Right now what I've done is allocate the bitmaps and inode tables at the
> > beginning of each group of 64 BG. Still need to work on fsck since just
> > removing the restriction on were the bitmaps and inode table are
> > located still gives me errors of uninitialized inodes with dtime set.
> > Seems like fsck still expect inode information to be located at
> > specific locations within the disk.
>
> Can you send me the patch which you were playing with? I might be
> able to help you with this. It should be pretty straightforward to
> remove the constraint on the inode table location.
Here is the kernel piece.
-JRS
---
fs/ext4/super.c | 3 3 + 0 - 0 !
include/linux/ext4_fs.h | 4 3 + 1 - 0 !
2 files changed, 6 insertions(+), 1 deletion(-)
Index: linux-2.6/fs/ext4/super.c
===================================================================
--- linux-2.6.orig/fs/ext4/super.c 2007-07-11 15:34:58.000000000 -0500
+++ linux-2.6/fs/ext4/super.c 2007-07-11 16:19:08.000000000 -0500
@@ -1271,6 +1271,9 @@ static int ext4_check_descriptors (struc
ext4_debug ("Checking group descriptors");
+ if (EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_FLEX_BG))
+ return 1;
+
for (i = 0; i < sbi->s_groups_count; i++)
{
if (i == sbi->s_groups_count - 1)
Index: linux-2.6/include/linux/ext4_fs.h
===================================================================
--- linux-2.6.orig/include/linux/ext4_fs.h 2007-07-11 15:34:58.000000000 -0500
+++ linux-2.6/include/linux/ext4_fs.h 2007-07-12 09:58:51.000000000 -0500
@@ -698,13 +698,15 @@ static inline int ext4_valid_inum(struct
#define EXT4_FEATURE_INCOMPAT_META_BG 0x0010
#define EXT4_FEATURE_INCOMPAT_EXTENTS 0x0040 /* extents support */
#define EXT4_FEATURE_INCOMPAT_64BIT 0x0080
+#define EXT4_FEATURE_INCOMPAT_FLEX_BG 0x0200
#define EXT4_FEATURE_COMPAT_SUPP EXT2_FEATURE_COMPAT_EXT_ATTR
#define EXT4_FEATURE_INCOMPAT_SUPP (EXT4_FEATURE_INCOMPAT_FILETYPE| \
EXT4_FEATURE_INCOMPAT_RECOVER| \
EXT4_FEATURE_INCOMPAT_META_BG| \
EXT4_FEATURE_INCOMPAT_EXTENTS| \
- EXT4_FEATURE_INCOMPAT_64BIT)
+ EXT4_FEATURE_INCOMPAT_64BIT| \
+ EXT4_FEATURE_INCOMPAT_FLEX_BG)
#define EXT4_FEATURE_RO_COMPAT_SUPP (EXT4_FEATURE_RO_COMPAT_SPARSE_SUPER| \
EXT4_FEATURE_RO_COMPAT_LARGE_FILE| \
EXT4_FEATURE_RO_COMPAT_DIR_NLINK | \
-
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