On 11/21/2016 05:20 PM, Theodore Ts'o wrote: > Can you try getting the inode number and then trying to get a pathname > to the inode? And then get the on-disk stat information? You can do > this using debugfs, for example: > > debugfs /dev/sda3 > debugfs: ncheck 2621442 > Inode Pathname > 2621442 /u1/Doctor-Who-medley.flac > debugfs: stat /u1/Doctor-Who-medley.flac > Inode: 2621442 Type: regular Mode: 0644 Flags: 0x80000 > Generation: 3942406670 Version: 0x00000000:00000001 > User: 18209 Group: 18209 Project: 0 Size: 500591580 > File ACL: 0 Directory ACL: 0 > Links: 1 Blockcount: 977608 > Fragment: Address: 0 Number: 0 Size: 0 > ctime: 0x57e99a99:57d3bfbc -- Mon Sep 26 18:00:57 2016 > atime: 0x57eef0af:64fe6c84 -- Fri Sep 30 19:09:35 2016 > mtime: 0x56b18898:00000000 -- Tue Feb 2 23:56:56 2016 > crtime: 0x57e99a95:91002508 -- Mon Sep 26 18:00:53 2016 > Size of extra inode fields: 32 > Inode checksum: 0xfe12a620 > EXTENTS: > (ETB0):10543077, (0-2):649216-649218, (18-6143):649234-655359, (6144-16383):7106 > 56-720895, (16384-24575):696320-704511, (24576-36863):806912-819199, (36864-4505 > 5):794624-802815, (45056-47103):882688-884735, (47104-71679):892928-917503, (716 > 80-75775):937984-942079, (75776-77823):1003520-1005567, (77824-83967):1009664-10 > 15807, (83968-88063):991232-995327, (88064-92159):999424-1003519, (92160-94207): > 1021952-1023999, (94208-96255):1028096-1030143, (96256-98303):1040384-1042431, ( > 98304-106495):1032192-1040383, (106496-120831):1095680-1110015, (120832-122214): > 1085440-1086822 > > And then can you see if there's any commonality in terms of the > workload associated with that inode, or whether or not that inode was > likely to be in the process of being modified? > Unfortunately the files involved in those workloads have since been migrated to BTRFS. However, I have full crashdumps and can extract any information from the in-memory data structures. I'd really like to get this resolved and hope the in-memory information will suffice. > Thanks, > > - Ted > -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
