1 tune2fs metadata_csum test 2 Creating filesystem with 524288 1k blocks and 65536 inodes 3 Superblock backups stored on blocks: 4 8193, 24577, 40961, 57345, 73729, 204801, 221185, 401409 5 6 Allocating group tables: done 7 Writing inode tables: done 8 Creating journal (16384 blocks): done 9 Creating 477 huge file(s) with 1024 blocks each: done 10 Writing superblocks and filesystem accounting information: done 11 12 Pass 1: Checking inodes, blocks, and sizes 13 Pass 2: Checking directory structure 14 Pass 3: Checking directory connectivity 15 Pass 4: Checking reference counts 16 Pass 5: Checking group summary information 17 18 Exit status is 0 19 tune2fs -O metadata_csum test.img 20 21 Please run e2fsck -fD on the filesystem. 22 23 Exit status is 0 24 test_filesys was not cleanly unmounted, check forced. 25 Pass 1: Checking inodes, blocks, and sizes 26 Pass 2: Checking directory structure 27 Pass 3: Checking directory connectivity 28 Pass 3A: Optimizing directories 29 Pass 4: Checking reference counts 30 Pass 5: Checking group summary information 31 32 33 34 Change in FS metadata: 35 @@ -2,7 +2,7 @@ 36 Last mounted on: <not available> 37 Filesystem magic number: 0xEF53 38 Filesystem revision #: 1 (dynamic) 39 -Filesystem features: has_journal ext_attr resize_inode dir_index filetype extent 64bit flex_bg sparse_super large_file huge_file dir_nlink extra_isize 40 +Filesystem features: has_journal ext_attr resize_inode dir_index filetype extent 64bit flex_bg sparse_super large_file huge_file dir_nlink extra_isize metadata_csum 41 Default mount options: user_xattr acl 42 Filesystem state: clean 43 Errors behavior: Continue 44 @@ -10,7 +10,7 @@ 45 Inode count: 65536 46 Block count: 524288 47 Reserved block count: 26214 48 -Free blocks: 571 49 +Free blocks: 568 50 Free inodes: 65048 51 First block: 1 52 Block size: 1024 53 @@ -33,6 +33,7 @@ 54 Journal inode: 8 55 Default directory hash: half_md4 56 Journal backup: inode blocks 57 +Checksum type: crc32c 58 Journal features: (none) 59 Journal size: 16M 60 Journal length: 16384 61 @@ -40,24 +41,24 @@ 62 Journal start: 0 63 64 65 -Group 0: (Blocks 1-8192) 66 +Group 0: (Blocks 1-8192) [ITABLE_ZEROED] 67 Primary superblock at 1, Group descriptors at 2-5 68 Reserved GDT blocks at 6-261 69 Block bitmap at 262 (+261) 70 Inode bitmap at 278 (+277) 71 Inode table at 294-549 (+293) 72 - 21 free blocks, 536 free inodes, 2 directories 73 - Free blocks: 4413-4433 74 + 18 free blocks, 536 free inodes, 2 directories, 536 unused inodes 75 + Free blocks: 4413, 4417-4433 76 Free inodes: 489-1024 77 -Group 1: (Blocks 8193-16384) 78 +Group 1: (Blocks 8193-16384) [INODE_UNINIT, ITABLE_ZEROED] 79 Backup superblock at 8193, Group descriptors at 8194-8197 80 Reserved GDT blocks at 8198-8453 81 Block bitmap at 263 (bg #0 + 262) 82 Inode bitmap at 279 (bg #0 + 278) 83 Inode table at 550-805 (bg #0 + 549) 84 - 0 free blocks, 1024 free inodes, 0 directories 85 + 0 free blocks, 1024 free inodes, 0 directories, 1024 unused inodes 86 Free blocks: 87 Free inodes: 1025-2048 88 -Group 2: (Blocks 16385-24576) 89 +Group 2: (Blocks 16385-24576) [INODE_UNINIT, ITABLE_ZEROED] 90 Block bitmap at 264 (bg #0 + 263) 91 Inode bitmap at 280 (bg #0 + 279) 92 Pass 1: Checking inodes, blocks, and sizes 93 Pass 2: Checking directory structure 94 Pass 3: Checking directory connectivity 95 Pass 4: Checking reference counts 96 Pass 5: Checking group summary information 97 98 Exit status is 0 99
