problem while mounting an LVM

[Serge E. Hallyn]

Well, it's possible that you have it mounted in another namespace.
Can you provide output of:

1. ls -l /mnt/backup
	(make sure that directory exists :)
2. ls -l /dev/mapper
3. cat /proc/self/mountinfo
4. cat /proc/self/mounts
5. cat /proc/1/mountinfo
6. cat /proc/1/mounts

thanks,
-serge

Quoting Tapas Mishra (mightydreams at gmail.com):
> mount output is
> /dev/sda1 on / type ext4 (rw,errors=remount-ro)
> proc on /proc type proc (rw,noexec,nosuid,nodev)
> none on /sys type sysfs (rw,noexec,nosuid,nodev)
> none on /sys/fs/fuse/connections type fusectl (rw)
> none on /sys/kernel/debug type debugfs (rw)
> none on /sys/kernel/security type securityfs (rw)
> none on /dev type devtmpfs (rw,mode=0755)
> none on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=0620)
> none on /dev/shm type tmpfs (rw,nosuid,nodev)
> none on /var/run type tmpfs (rw,nosuid,mode=0755)
> none on /var/lock type tmpfs (rw,noexec,nosuid,nodev)
> none on /lib/init/rw type tmpfs (rw,nosuid,mode=0755)
> none on /var/lib/ureadahead/debugfs type debugfs (rw,relatime)
> 
> nintendo is a volume group which holds these LVMs
> 
> On Mon, Oct 4, 2010 at 2:20 PM, Jordon Bedwell <jordon at envygeeks.com> wrote:
> 
> > On Mon, 2010-10-04 at 14:13 +0530, Tapas Mishra wrote:
> > > mount /dev/nintendo/backupos /mnt/backup/
> > > mount: /dev/mapper/nintendo-backupos already mounted or /mnt/backup/
> > > umount: /mnt/backup/: not mounted
> >
> > What is '/dev/nintendo'? Did you run the 'mount' command as is to see
> > what it lists so you can see if it's already mounted for real and then,
> > if it is, unmount it so you can remount it at the mount point you
> > choose?  Just typing 'sudo mount' will list everything that's mounted.
> >
> >
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