If the file system's inode table blocks in the last block group are
located in the middle or the end of the block group, it's possible for
resize2fs -M to use a size which will require relocating the inode
table blocks in the last block group. This can lead to all sorts of
problems, so solve it by simply guaranteeing that we will never do
that.
Reported-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
blks_needed = (groups-1) * EXT2_BLOCKS_PER_GROUP(fs->super);
blks_needed += overhead;
+ /*
+ * Make sure blks_needed covers the end of the inode table in
+ * the last block group.
+ */
+ overhead = ext2fs_inode_table_loc(fs, groups-1) +
+ fs->inode_blocks_per_group;
+ if (blks_needed < overhead)
+ blks_needed = overhead;
+
#ifdef RESIZE2FS_DEBUG
if (flags & RESIZE_DEBUG_MIN_CALC)
printf("Estimated blocks needed: %llu\n", blks_needed);