From: Robin Dong <sanbai@xxxxxxxxxx>
After:
1. mke2fs -O ^has_journal,^resize_inode,^uninit_bg,extent,meta_bg,flex_bg,bigalloc /dev/sda
2. mount -t ext4 /dev/sda /test/
3. create file (8192K size, extent' e_len is 2) /test/1 ~ /test/10
4. use tool to change the /test/5 extent's e_len to 100, corrupt file
5. e2fsck -f /dev/sda
And it will report like:
Clone multiply-claimed blocks<y>? yes
clone_file_block: internal error: can't find dup_blk for 525345
clone_file_block: internal error: can't find dup_blk for 525346
clone_file_block: internal error: can't find dup_blk for 525347
clone_file_block: internal error: can't find dup_blk for 525348
In bigalloc filesystem, "blockcnt > 0" should change to "blockcnt >= cluster_ratio"
Signed-off-by: Robin Dong <sanbai@xxxxxxxxxx>
---
e2fsck/pass1b.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/e2fsck/pass1b.c b/e2fsck/pass1b.c
index d5585dd..a9cdd9e 100644
--- a/e2fsck/pass1b.c
+++ b/e2fsck/pass1b.c
@@ -703,7 +703,7 @@ static int clone_file_block(ext2_filsys fs,
if (check_if_fs_cluster(ctx, EXT2FS_B2C(fs, *block_nr)))
is_meta = 1;
- if (((blockcnt > 0) && c == cs->dup_cluster) ||
+ if (((blockcnt >= EXT2FS_CLUSTER_RATIO(fs)) && c == cs->dup_cluster) ||
ext2fs_test_block_bitmap2(ctx->block_dup_map, *block_nr)) {
n = dict_lookup(&clstr_dict,
INT_TO_VOIDPTR(EXT2FS_B2C(fs, *block_nr)));
--
1.7.3.2
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