[linux-lvm] Can't mount or run fdisk on an existing logical volume, help!

[Ray Van Dolson]

On Tue, Jul 21, 2009 at 12:55:50PM -0700, Adam Olsen wrote:
> This pretty much sums it up:
> 
> imgserv:/storage/# lvscan
>   ACTIVE            '/dev/storage/storage' [3.62 TB] inherit
> imgserv:/storage/# fdisk /dev/storage/storage
> 
> Unable to read /dev/storage/storage
> 
> I can't mount it, access it with fdisk.  Here's the lvdisplay output:
> 
> imgserv:/storage/# lvdisplay
>   --- Logical volume ---
>   LV Name                /dev/storage/storage
>   VG Name                storage
>   LV UUID                Cw8aAr-YHsR-oVfH-7AAx-2ppa-Zm3M-U9z1eA
>   LV Write Access        read/write
>   LV Status              available
>   # open                 0
>   LV Size                3.62 TB
>   Current LE             948962
>   Segments               3
>   Allocation             inherit
>   Read ahead sectors     auto
>   - currently set to     256
>   Block device           254:0
> 
> This is on debian etch.   This is what I see at the end of dmesg:
> 
> cdrom: open failed.
> hdc: packet command error: status=0x51 { DriveReady SeekComplete Error }
> hdc: packet command error: error=0x54
> 
> Which I don't think has anything to do with this problem, as hdc is
> NOT one of the physical volumes... it's a cdrom drive.
> 
> Is there anything I can do to debug this?
> 

You've already done a vgchange -ay on the volgroup?  What's the output
of pvs/pvdisplay?

Ray