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wrong master super block magic --HELP

Hi there - VERY VERY NEW To LINUX

I'm having problems with a RHES 5 server rebooting all the time. Having booted with a live CD isolinux with Kernel 2.6 trying to access logs on it, but can't seem to do the mount of my Logical drive with following error after MOUNT command:

<4>reiser4[mount(5474)]: init_reader_super (fs/reiser4/init_super.c:604)[nikita-20B]:
WARNING: sda: wrong master super block magic
FAT: invalid media value (0x8e)
mount you must specify the filesystem type

Adding this : The scsi hdd has a vfat partition and then all other partions being extfs3.

I need a clue on how to workaround this error

Thnx a lot

Jmont

Hi,

Welcome to LQ!

Post the 'mount' command line that you utilized.

Quote:

Originally Posted by onebuck (Post 3613845)

Hi,

Welcome to LQ!

Post the 'mount' command line that you utilized.

Hi,

the command i used was :

mount -a -l -v /dev/sda3 /mnt/mydir . I think the problem is that that the root (/) filesystem is full (99% - i could see it doing a 'df -h')That was the only thing i could do before (another) restart after login . When i was doing the mount i was using a isolinux liveCD . The server was not on my charge but (by superior orders) now i'm the one in charge . The problem is i'm (I CONFESS) a Win Admin . This machine is our first Linux server . . . :( nice job ...

Hi,

Quote:

excerpt from 'man mount';

-v Verbose mode.

-a Mount all filesystems (of the given types) mentioned in fstab.

-l Add the ext2, ext3 and XFS labels in the mount output. Mount
must have permission to read the disk device (e.g. be suid root)
for this to work. One can set such a label for ext2 or ext3
using the e2label(8) utility, or for XFS using xfs_admin(8), or
for reiserfs using reiserfstune(8).

You can always 'man command' to get full information to allow a better understanding of the usage.

If you look at the '-a' option you will see that the mount should use the static information from the 'fstab'.

The '-v' is just a verbose so as to get information from the actions.

The '-l' is for label use.

If you take the information from the command line and the output that you received. You did not have a '-a' specification for the the device that you were trying to mount via the 'fstab'. Plus no label definition.

If I were mounting a 'ext' filesystem then the 'mount /dev/some_device /mnt/some_mount_point' would default to the 'ext' filesystem since one was not specified. Now if that file was a 'NTFS' then I would use 'mount -t ntfs-3g /dev/some_NTFS_device /mnt/some_mount_point'. The 'ntfs-3g' file type would be used to allow R/W of the filesystem.

You should 'man mount' to understand a little more.

Look at 'Rute Tutorial & Exposition' to get some background.

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