Superblock marked dirty 疑问

arlenlee

各位大大好...
AIX 5.3系统...

在mount一个data fs不能mount，相关讯息如下:
#lspv
hdisk0          00c92412195e7fe9                    rootvg          active
hdisk1          00cd8edc85aaaad1                    datavg          active
hdisk2          00c924122f14e65d                    data1vg         active

#lsvg -l datavg
datavg:
LV NAME             TYPE       LPs     PPs     PVs  LV STATE      MOUNT POINT
loglv03             jfs2log    1       1       1    closed/syncd  N/A
fslv00              jfs2       1837    1837    1    closed/syncd  /var/fadata

#mount /var/fadata
Replaying log for /dev/fslv00.
mount: 0506-324 Cannot mount /dev/fslv00 on /var/fadata: The media is not format
ted or the format is not correct.
0506-342 The superblock on /dev/fslv00 is dirty.  Run a full fsck to fix.

而run fsck...

#fsck -y /dev/fslv00
The current volume is: /dev/fslv00
Primary superblock is valid.
J2_LOGREDO:log redo processing for /dev/fslv00
exec module "/sbin/helpers/jfs2/logredo64" failed.
logredo failed (rc=255).  fsck continuing.
Primary superblock is valid.
*** Phase 1 - Initial inode scan
*** Phase 2 - Process remaining directories
*** Phase 3 - Process remaining files
*** Phase 4 - Check and repair inode allocation map
File system inode map is corrupt (FIXED)
Superblock marked dirty because repairs are about to be written.
fsck: 0507-287 Internal error (5,0,0,0). Cannot continue.


有翻一下旧文~ 似乎有篇类似的~
http://bbs.chinaunix.net/viewthread.php?tid=600794

里面有提到dd 以及logform的解决方式~~
因fs里的资料不想丢失，故尚不敢下文中command尝试~~
想请教敝人的问题，有大大遇到过的经验吗??

另logform或dd的方式，会对资料造成影响吗?
另dd seek=1 skip=31 count=1 bs=4k if=/dev/fslv00 of=/dev/fslv00

seek、skip、count、bs 值是否需参考我的环境作改变....谢谢