1debugfs: stat /a 2Inode: 12 Type: regular Mode: 0644 Flags: 0x0 3Generation: 1573716129 Version: 0x00000000:00000001 4User: 0 Group: 0 Size: 524288 5File ACL: 0 Directory ACL: 0 6Links: 1 Blockcount: 1030 7Fragment: Address: 0 Number: 0 Size: 0 8 ctime: 0x5457f87a:62ae2980 -- Mon Nov 3 21:49:46 2014 9 atime: 0x5457f87a:61ba0598 -- Mon Nov 3 21:49:46 2014 10 mtime: 0x5457f87a:62ae2980 -- Mon Nov 3 21:49:46 2014 11crtime: 0x5457f87a:61ba0598 -- Mon Nov 3 21:49:46 2014 12Size of extra inode fields: 28 13BLOCKS: 14(0-11):1025-1036, (IND):24, (12-267):1037-1292, (DIND):25, (IND):41, (268-511):1293-1536 15TOTAL: 515 16 17debugfs: ex /zero 18Level Entries Logical Physical Length Flags 19 0/ 1 1/ 1 0 - 8 28 9 20 1/ 1 1/ 4 0 - 0 27 - 27 1 21 1/ 1 2/ 4 2 - 2 29 - 29 1 22 1/ 1 3/ 4 4 - 4 31 - 31 1 23 1/ 1 4/ 4 6 - 6 33 - 33 1 24Pass 1: Checking inodes, blocks, and sizes 25Pass 1E: Optimizing extent trees 26Pass 2: Checking directory structure 27Pass 3: Checking directory connectivity 28Pass 4: Checking reference counts 29Pass 5: Checking group summary information 30 31test_filesys: ***** FILE SYSTEM WAS MODIFIED ***** 32test_filesys: 13/128 files (15.4% non-contiguous), 574/2048 blocks 33Exit status is 0 34