请问各位大侠关于superblock损坏恢复的问题

racerlw008

昨天一群白痴将M80非法断电后，今天小弟将dataVG varyon后发现VG中的LV全部不能mount，作fsck -y /dev/lv时报：
log redo processing for /dev/xxlv
counldn't read log superblock
rogredo:I/O error
Failure replaying log:0
logredo failed fsck contiuning
然后作6步作完
再mount LV报
unable to read superblock (terminated)
can't mount /dev/lv /mount点：there is an inport or output error

有高人说用 fsck -p参数，小弟哈没来的及试，不知行否。
其中数据很重要，请各位大虾指点帮忙！！多谢，多谢，多多谢！

lxlab

superblock 是可以修复的。

lxlab

Recovering from super block errors
If you receive one of the following errors from the fsck or mount commands,
problem may be a corrupted (or dirty) superblock.
fsck: Not an AIX3 file system
fsck: Not an AIXV3 file system
fsck: Not an AIX4 file system
fsck: Not an AIXV4 file system
fsck: Not a recognized file system type
mount: invalid argument
The problem can be resolved by restoring the backup of the superblock
primary superblock using one of the following commands:
dd count=1 bs=4k skip=31 seek=1 if=/dev/lv00 of=/dev/lv00
The following command works only for AIX Version 4:
fsck -p /dev/lv00
Once the restoration process is completed, check the integrity of the
by issuing the fsck command.
fsck /dev/lv00
In many cases, restoration of the backup of the superblock to the primary
superblock will recover the file system. If this does not resolve the
recreate the file system and restore the data from a backup.

lh403

最好再做个logform

racerlw008

[quote]原帖由 "lh403"]最好再做个logform[/quote 发表：

可否说的详细点?

aixnewer

191的redbook中有详细步骤

wozxz

重建JFS日志;
# /usr/sbin/logform  /dev/hd8