On Tue, 22 Apr 2008 08:46:18 -0400
"Theodore Ts'o" <tytso@xxxxxxx> wrote:
> Add superblock definition, and dumpe2fs and debugfs support.
Looks good.
> Signed-off-by: Jose R. Santos <jrs@xxxxxxxxxx>
> Signed-off-by: Valerie Clement <valerie.clement@xxxxxxxx>
> Signed-off-by: Theodore Ts'o <tytso@xxxxxxx>
> ---
> debugfs/set_fields.c | 1 +
> lib/e2p/ls.c | 3 +++
> lib/ext2fs/ext2_fs.h | 5 ++++-
> 3 files changed, 8 insertions(+), 1 deletions(-)
>
> diff --git a/debugfs/set_fields.c b/debugfs/set_fields.c
> index ee51c45..25343f0 100644
> --- a/debugfs/set_fields.c
> +++ b/debugfs/set_fields.c
> @@ -132,6 +132,7 @@ static struct field_set_info super_fields[] = {
> { "mmp_interval", &set_sb.s_mmp_interval, 2, parse_uint },
> { "mmp_block", &set_sb.s_mmp_block, 8, parse_uint },
> { "raid_stripe_width", &set_sb.s_raid_stripe_width, 4, parse_uint },
> + { "log_groups_per_flex", &set_sb.s_log_groups_per_flex, 1, parse_uint },
> { 0, 0, 0, 0 }
> };
>
> diff --git a/lib/e2p/ls.c b/lib/e2p/ls.c
> index b119606..c211dce 100644
> --- a/lib/e2p/ls.c
> +++ b/lib/e2p/ls.c
> @@ -242,6 +242,9 @@ void list_super2(struct ext2_super_block * sb, FILE *f)
> if (sb->s_first_meta_bg)
> fprintf(f, "First meta block group: %u\n",
> sb->s_first_meta_bg);
> + if (sb->s_log_groups_per_flex)
> + fprintf(f, "Flex block group size: %u\n",
> + 1 << sb->s_log_groups_per_flex);
> if (sb->s_mkfs_time) {
> tm = sb->s_mkfs_time;
> fprintf(f, "Filesystem created: %s", ctime(&tm));
> diff --git a/lib/ext2fs/ext2_fs.h b/lib/ext2fs/ext2_fs.h
> index ad42cf8..f23c8fd 100644
> --- a/lib/ext2fs/ext2_fs.h
> +++ b/lib/ext2fs/ext2_fs.h
> @@ -564,7 +564,10 @@ struct ext2_super_block {
> __u16 s_mmp_interval; /* # seconds to wait in MMP checking */
> __u64 s_mmp_block; /* Block for multi-mount protection */
> __u32 s_raid_stripe_width; /* blocks on all data disks (N*stride)*/
> - __u32 s_reserved[163]; /* Padding to the end of the block */
> + __u8 s_log_groups_per_flex; /* FLEX_BG group size */
> + __u8 s_reserved_char_pad;
> + __u16 s_reserved_pad; /* Padding to next 32bits */
> + __u32 s_reserved[162]; /* Padding to the end of the block */
> };
>
> /*
-JRS
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