vitalif/e2fsprogs - e2fsprogs - Gitea

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e2fsck: fix e2fsck -fD directory truncation When an extent-mapped directory is compacted by "e2fsck -fD" and frees enough leaf blocks that it loses an extent tree index block, the old e2fsck_rehash_dir->ext2fs_block_iterate3->write_dir_block() code would not free the extent block, which would result in the extent tree becoming corrupted when it is written out. Pass 1: Checking inodes, blocks, and sizes Inode 17825800, end of extent exceeds allowed value (logical block 710, physical block 570459684, len 1019) This results in loss of a whole index block of directory leaf blocks and maybe thousands or millions of files in lost+found. Fix e2fsck_rehash_dir() to call ext2fs_punch() to free the blocks at the end of the directory instead of trying to handle this itself while writing out the directory. That properly handles all of the cases of updating the extent tree as well as accounting for blocks that are released (both leaf blocks and index blocks). Add a test case for compacting the directory to be smaller than the index block that originally caused the corruption. Signed-off-by: Andreas Dilger <andreas.dilger@intel.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu>

2015-11-30 23:26:35 +03:00

htree extent compression