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Special Forums Hardware Filesystems, Disks and Memory Bad Super Block: Magic Number Wrong Post 302116440 by Bynds on Friday 4th of May 2007 12:22:44 AM
Old 05-04-2007
Solution to problem

Hello to all that find this thread through Google :-)

I had a similar problem with my HDD and FreeBSD saying there was a bad superblock.
I followed the first step of the procedure and discovered (to my relief) the backup superblocks.

Once past this point the next reccomendation was to use fsck -b 160 /dev/"my partition"
This doesn't work as FreeBSD's fsck command doesn't acknowledge the -b flag as valid.

The trick is to use fsck_ffs which *does* recognise the -b flag and takes the appropriate action. i.e. fsck_ffs -b 160 /dev/"my partition"

Second tip (don't flame me for it's obviousness, not everyone is a super sysop). Make sure you are have root access otherwise no errors will be corrected.

Third Tip. If it looks like your filesystem is in a really bad way, look at the -y flag in the man page. i.e. read man fsck_ffs looking for -y :-)

I hope this is usefull for anyone else that has the problem.

Cheers,
Neil S Davenport
 

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COPYFS-MOUNT(1) 						   User Commands						   COPYFS-MOUNT(1)

NAME
copyfs-mount - mounts a versioned file system SYNOPSIS
copyfs-mount version-directory mount-point DESCRIPTION
This script lets you mount a CopyFS file system. version-directory is the directory where the files and version information will be stored by CopyFS. When using CopyFS for the first time, copyfs-mount will create the required files in the version-directory before running copyfs-daemon. mount-point is the directory where the copyfs file system will be mounted. This is where the users will have access to the files. If you want to mount a CopyFS at '/mnt/fs', whose version directory is at /var/versions, you would use: root@host# copyfs-mount /var/versions /mnt/fs To unmount it, simply do: root@host# umount /mnt/fs As you would do for any other filesystem. You can also allow an ordinary non-root users to mount and unmount CopyFS filesystems provided that the user is added to the 'fuse' group. Ordinary users will be able unmount the filesystem, using the fusermount command: $ fusermount -u mount-point AUTHORS
CopyFS was created by Thomas Joubert and Nicolas Vigier <boklm@mars-attacks.org> LINKS
<http://n0x.org/copyfs/> CopyFS web site. <http://fuse.sourceforge.net/> FUSE - Filesystem in USErspace SEE ALSO
copyfs(1), copyfs-fversion(1), copyfs-daemon(1), fusermount(1) copyfs-mount May 2008 COPYFS-MOUNT(1)
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