ビデオファイルの救出（２）

ふと思いついて LS-HGL 標準ファームで救出作戦を進めてみる。

マウント

root@LS-HGL487:~# mount /dev/sdb4 /tmp/mnt/
mount: wrong fs type, bad option, bad superblock on /dev/sdb4,
       or too many mounted file systems
root@LS-HGL487:~# mount -t xfs /dev/sdb4 /tmp/mnt/
mount: wrong fs type, bad option, bad superblock on /dev/sdb4,
       or too many mounted file systems
root@LS-HGL487:~#

fsck

root@LS-HGL487:~# fsck.xfs /dev/sdb4
root@LS-HGL487:~#

xfs_check

root@LS-HGL487:~# xfs_check /dev/sdb4
. and .. same for non-root directory 128
root inode -1 is missing
disconnected inode 129, nlink 1
disconnected inode 130, nlink 1
sb_icount 0, counted 31296
sb_ifree 0, counted 19198
sb_fdblocks 77492609, counted 8424924
root@LS-HGL487:~#

root@LS-HGL487:~# !mount
mount -t xfs /dev/sdb4 /tmp/mnt/
mount: wrong fs type, bad option, bad superblock on /dev/sdb4,
       or too many mounted file systems
root@LS-HGL487:~# 

xfs_repair

root@LS-HGL487:~# xfs_repair /dev/sdb4
Phase 1 - find and verify superblock...
sb root inode value 18446744073709551615 (NULLFSINO) inconsistent with calculated value 128
resetting superblock root inode pointer to 128
sb realtime bitmap inode 18446744073709551615 (NULLFSINO) inconsistent with calculated value 129
resetting superblock realtime bitmap ino pointer to 129
sb realtime summary inode 18446744073709551615 (NULLFSINO) inconsistent with calculated value 130
resetting superblock realtime summary ino pointer to 130
Phase 2 - using internal log
        - zero log...
        - 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 = 72
        - agno = 73
        - process newly discovered inodes...
Phase 4 - check for duplicate blocks...
        - setting up duplicate extent list...
        - clear lost+found (if it exists) ...
        - check for inodes claiming duplicate blocks...
        - agno = 0
        - agno = 1
	:
	:
        - agno = 72
        - agno = 73
Phase 5 - rebuild AG headers and trees...
        - reset superblock...
Phase 6 - check inode connectivity...
        - resetting contents of realtime bitmap and summary inodes
        - ensuring existence of lost+found directory
        - traversing filesystem starting at / ...
        - traversal finished ...
        - traversing all unattached subtrees ...
        - traversals finished ...
        - moving disconnected inodes to lost+found ...
Phase 7 - verify and correct link counts...
done
root@LS-HGL487:~#

root@LS-HGL487:~# mount /dev/sdb4 /tmp/mnt
root@LS-HGL487:~# ls /tmp/mnt
Backup      Music       buffalo     dap         lost+found  tmp         videos      wk
root@LS-HGL487:~#

ヒョッとすると、これが ABI 問題？

救出

root@LS-HGL487:~# cat /etc/rsyncd.conf
uid = root
gid = root
use chroot = yes

[disk1_share]
  path = /mnt/disk1/share/.
  read only = no
root@LS-HGL487:~#

root@LS-HGL487:~# umount /tmp/mnt
root@LS-HGL487:~# mkdir /mnt/disk1/share/usb
root@LS-HGL487:~# mount /dev/sdb4 /mnt/disk1/share/usb
root@LS-HGL487:~# df
Filesystem           1k-blocks      Used Available Use% Mounted on
/dev/root.old            15351     14796       555  96% /initrd
/dev/sda2              4994004    255592   4738412   5% /
/dev/ram1                15360       104     15256   1% /mnt/ram
/dev/sda1               988212     24436    963776   2% /boot
/dev/sda6            237067816   9138732 227929084   4% /mnt/disk1
/dev/sdb4            309971620 269415516  40556104  87% /mnt/disk1/share/usb
root@LS-HGL487:~#

HS-DHGL から rsync を実行

yasunari@sil:/mnt/videos$ mkdir bak
yasunari@sil:/mnt/videos$ cd bak
yasunari@sil:/mnt/videos/bak$ rsync -rtuvpogtlH rsync://busu/disk1_share/usb/buffalo/mnt/disk1/share/videos .
	:

一見落着！

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