02-16-2008
Can't mount showing 0506-342 The superblock on /dev/fslv00 is dirty
Dear All
Last day in Aix 5.2 server by executing
# df –g
I found following:
Filesystem GB blocks Free %Used Iused %Iused Mounted on
.
.
/dev/fslv00 58.00 136.70 -135% 212103 1% /sprod
After shutting down by following command
# shutdown –h
And when the Aix start there is no /sprod
# df –g
result not showing /sprod
!!! I tried to mount it by
# mount /sprod
and found
Replaying log for /dev/fslv00.
Failure replaying log: -1
mount: 0506-324 Cannot mount /dev/fslv00 on /sprod: The media is not formatted or the format is not correct.
0506-342 The superblock on /dev/fslv00 is dirty. Run a full fsck to fix.
Then tried
# fsck
Results like following …
The current volume is: /dev/hd1
File system is currently mounted.
fsck: Performing read-only processing does not produce dependable results.
**Phase 1 - Check Blocks, Files/Directories, and Directory Entries
**Phase 2 - Count links
**Phase 3 - Duplicate Block Rescan and Directory Connectedness
**Phase 4 - Report Problems
**Phase 7 - Verify File/Directory Allocation Maps
File system inode map is corrupt (NOT FIXED)
**Phase 8 - Verify Disk Allocation Maps
2555904 kilobytes total disk space.
1774 kilobytes in 533 directories.
2484237 kilobytes in 21467 user files.
68288 kilobytes are available for use.
fsck: Performing read-only processing does not produce dependable results.
And also tried with #fsck –p /sprod and fsck -p /dev/fslv00 and also # fsck -y /sprod and fsck -y /dev/fslv00
but still faild.
Then I tried to replace the first super block by second super block using
dd count=1 bs=4k skip=1 seek=31 if=/dev/fslv00 of=/dev/fslv00
But still failed to mount the /sprod and getting same error as before
Failure replaying log: -1
mount: 0506-324 Cannot mount /dev/fslv00 on /sprod: The media is not formatted or the format is not correct.
0506-342 The superblock on /dev/fslv00 is dirty. Run a full fsck to fix.
Please help me. Is there any way I can mount the /sprod directory or at least is there any data recovery software or what ever by using which I can recover those data from that directory?
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LEARN ABOUT NETBSD
mount_fdesc
MOUNT_FDESC(8) BSD System Manager's Manual MOUNT_FDESC(8)
NAME
mount_fdesc -- mount the file-descriptor file system
SYNOPSIS
mount_fdesc [-o options] fdesc mount_point
DESCRIPTION
The mount_fdesc command attaches an instance of the per-process file descriptor namespace to the global filesystem namespace. The conven-
tional mount point is /dev and the filesystem should be union mounted in order to augment, rather than replace, the existing entries in /dev.
The directory specified by mount_point is converted to an absolute path before use.
This command is normally executed by mount(8) at boot time.
The options are as follows:
-o Options are specified with a -o flag followed by a comma separated string of options. See the mount(8) man page for possible options
and their meanings.
The contents of the mount point are fd, stderr, stdin, stdout and tty.
fd is a directory whose contents appear as a list of numbered files which correspond to the open files of the process reading the directory.
The files /dev/fd/0 through /dev/fd/# refer to file descriptors which can be accessed through the file system. If the file descriptor is
open and the mode the file is being opened with is a subset of the mode of the existing descriptor, the call:
fd = open("/dev/fd/0", mode);
and the call:
fd = fcntl(0, F_DUPFD, 0);
are equivalent.
The files /dev/stdin, /dev/stdout and /dev/stderr appear as symlinks to the relevant entry in the /dev/fd sub-directory. Opening them is
equivalent to the following calls:
fd = fcntl(STDIN_FILENO, F_DUPFD, 0);
fd = fcntl(STDOUT_FILENO, F_DUPFD, 0);
fd = fcntl(STDERR_FILENO, F_DUPFD, 0);
Flags to the open(2) call other than O_RDONLY, O_WRONLY and O_RDWR are ignored.
The /dev/tty entry is an indirect reference to the current process's controlling terminal. It appears as a named pipe (FIFO) but behaves in
exactly the same way as the real controlling terminal device.
FILES
/dev/fd/#
/dev/stdin
/dev/stdout
/dev/stderr
/dev/tty
SEE ALSO
mount(2), unmount(2), tty(4), fstab(5), mount(8)
HISTORY
The mount_fdesc utility first appeared in 4.4BSD.
BUGS
This filesystem may not be NFS-exported.
BSD
March 27, 1994 BSD