Blocks count used by super and GDT is dumped so that users
can know how many blocks are taken up by super and GDT.
Signed-off-by: Yongqiang Yang <xiaoqiangnk@xxxxxxxxx>
---
misc/dumpe2fs.c | 32 ++++++++++++++++++++++++++++++++
1 files changed, 32 insertions(+), 0 deletions(-)
diff --git a/misc/dumpe2fs.c b/misc/dumpe2fs.c
index 5b114e9..2f9e87b 100644
--- a/misc/dumpe2fs.c
+++ b/misc/dumpe2fs.c
@@ -489,6 +489,32 @@ static void parse_extended_opts(const char *opts, blk64_t *superblock,
free(buf);
}
+void print_super_gdt_blocks_count (ext2_filsys fs) {
+ blk64_t gdt_blks = 0, super_blks = 0;
+ blk64_t super_blk, old_desc_blk, new_desc_blk;
+ blk64_t old_desc_blocks;
+ unsigned int grp;
+
+ if (fs->super->s_feature_incompat & EXT2_FEATURE_INCOMPAT_META_BG)
+ old_desc_blocks = fs->super->s_first_meta_bg;
+ else
+ old_desc_blocks = fs->desc_blocks;
+
+ for (grp = 0; grp < fs->group_desc_count; grp++) {
+ ext2fs_super_and_bgd_loc2(fs, grp, &super_blk,
+ &old_desc_blk, &new_desc_blk, 0);
+ if (old_desc_blk)
+ gdt_blks += old_desc_blocks +
+ fs->super->s_reserved_gdt_blocks;
+ else if (new_desc_blk)
+ gdt_blks++;
+ super_blks += ((grp == 0) || super_blk);
+ }
+ printf("\nSuper blocks: %llu\n", super_blks);
+ printf("GDT blocks: %llu\n", gdt_blks);
+}
+
+
int main (int argc, char ** argv)
{
errcode_t retval;
@@ -588,6 +614,12 @@ int main (int argc, char ** argv)
EXT3_FEATURE_COMPAT_HAS_JOURNAL) &&
(fs->super->s_journal_inum != 0))
print_inline_journal_information(fs);
+
+ /*
+ * Print block used by super and group descriptors.
+ */
+ print_super_gdt_blocks_count(fs);
+
list_bad_blocks(fs, 0);
if (header_only) {
ext2fs_close (fs);
--
1.7.5.1
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