FAT かNTFS だろうと思っていたハードディスクは、どういうわけかLinux （XFS 6.2+）だった。そしてKNOPPIX からマウントしようと思ったら、スーパーブロックが論理障害らしいので修復した。
mount: /dev/sde1: can't read superblock
スーパーブロック（英: Superblock, Super block）とはファイルシステムの論理パーティションを管理するためのメタデータ（「スーパーブロック (ファイルシステム) – Wikipedia」より引用）
スポンサードリンク
XFS のチェック
knoppix@Microknoppix:~$ xfs_check /dev/sde1 ERROR: The filesystem has valuable metadata changes in a log which needs to be replayed. Mount the filesystem to replay the log, and unmount it before re-running xfs_check. If you are unable to mount the filesystem, then use the xfs_repair -L option to destroy the log and attempt a repair. Note that destroying the log may cause corruption -- please attempt a mount of the filesystem before doing this.
んー。やはり参考文献同様のエラーのようだ。
XFS の修復
knoppix@Microknoppix:~$ xfs_repair -Lv /dev/sde1 xfs_repair: warning - cannot set blocksize 512 on block device /dev/sde1: 許可がありません Phase 1 - find and verify superblock... - block cache size set to 240976 entries Phase 2 - using internal log - zero log... zero_log: head block 109150 tail block 109146 ALERT: The filesystem has valuable metadata changes in a log which is being destroyed because the -L option was used. ： ：
修復コマンドを送ろうとしたところ、sudo を忘れた・・。
knoppix@Microknoppix:~$ sudo xfs_repair -Lv /dev/sde1 Phase 1 - find and verify superblock... - block cache size set to 240976 entries Phase 2 - using internal log - zero log... zero_log: head block 2 tail block 2 - scan filesystem freespace and inode maps... - found root inode chunk Phase 3 - for each AG... - scan and clear agi unlinked lists... - process known inodes and perform inode discovery... - agno = 0 - agno = 1 - agno = 2 - agno = 3 - agno = 4 - agno = 5 - agno = 6 - agno = 7 - agno = 8 - agno = 9 - agno = 10 - agno = 11 - agno = 12 - agno = 13 - agno = 14 - agno = 15 - agno = 16 - agno = 17 - agno = 18 - agno = 19 - agno = 20 - agno = 21 - agno = 22 - agno = 23 - agno = 24 - agno = 25 - agno = 26 - agno = 27 - agno = 28 - agno = 29 - agno = 30 - agno = 31 - process newly discovered inodes... Phase 4 - check for duplicate blocks... - setting up duplicate extent list... - check for inodes claiming duplicate blocks... - agno = 0 - agno = 1 - agno = 2 - agno = 3 - agno = 4 - agno = 5 - agno = 6 - agno = 7 - agno = 8 - agno = 9 - agno = 10 - agno = 11 - agno = 12 - agno = 13 - agno = 14 - agno = 15 - agno = 16 - agno = 17 - agno = 18 - agno = 19 - agno = 20 - agno = 21 - agno = 22 - agno = 23 - agno = 24 - agno = 25 - agno = 26 - agno = 27 - agno = 28 - agno = 29 - agno = 30 - agno = 31 Phase 5 - rebuild AG headers and trees... - agno = 0 - agno = 1 - agno = 2 - agno = 3 - agno = 4 - agno = 5 - agno = 6 - agno = 7 - agno = 8 - agno = 9 - agno = 10 - agno = 11 - agno = 12 - agno = 13 - agno = 14 - agno = 15 - agno = 16 - agno = 17 - agno = 18 - agno = 19 - agno = 20 - agno = 21 - agno = 22 - agno = 23 - agno = 24 - agno = 25 - agno = 26 - agno = 27 - agno = 28 - agno = 29 - agno = 30 - agno = 31 - reset superblock... Phase 6 - check inode connectivity... - resetting contents of realtime bitmap and summary inodes - traversing filesystem ... - agno = 0 - agno = 1 - agno = 2 - agno = 3 - agno = 4 - agno = 5 - agno = 6 - agno = 7 - agno = 8 - agno = 9 - agno = 10 - agno = 11 - agno = 12 - agno = 13 - agno = 14 - agno = 15 - agno = 16 - agno = 17 - agno = 18 - agno = 19 - agno = 20 - agno = 21 - agno = 22 - agno = 23 - agno = 24 - agno = 25 - agno = 26 - agno = 27 - agno = 28 - agno = 29 - agno = 30 - agno = 31 - traversal finished ... - moving disconnected inodes to lost+found ... Phase 7 - verify and correct link counts... XFS_REPAIR Summary Sun Sep 30 12:58:50 2012 Phase Start End Duration Phase 1: 09/30 12:58:41 09/30 12:58:41 Phase 2: 09/30 12:58:41 09/30 12:58:46 5 seconds Phase 3: 09/30 12:58:46 09/30 12:58:50 4 seconds Phase 4: 09/30 12:58:50 09/30 12:58:50 Phase 5: 09/30 12:58:50 09/30 12:58:50 Phase 6: 09/30 12:58:50 09/30 12:58:50 Phase 7: 09/30 12:58:50 09/30 12:58:50 Total run time: 9 seconds done
これでマウント可能になり、ファイルに無事アクセスできた。
ふぅ・・。
コメント