Problem in mounting a Linux LVM

[RSydeco]

Hi all,

Here is our scenario, we installed OEL 5.5 on a new HP Proliat server after which, we ADDED a hard disk which was previously used as a primary hard disk with installed linux. After boot, we wanted to mount an fs from this hard disk so we tried: fsdisk -l

the result was:

fdisk.jpg

the fs we want to mount is /dev/sdc3 which is a Linux LVM, we followed a guide on how to properly mount a LVM and these were the results:

pvs.jpg
lvdisplay.jpg

but after mounting the desired fs '/dev/lvsystem/lvorcl' we get this error:

mount.jpg

Could you help me with this? I am a beginner in linux administration so I am completely oblivious on what to do.

Thanks very much!

[cnamejj]

I've never used Oracle Linux so I can't help much here. But if you get stuck and need some option to recover the data, even if it's not the best choice, here's a suggestion. You could boot off the old Linux disk, which should mount the LVM, then copy the data you need to an external USB connected drive. Then once you have saved everything you need that old disk can be repartitioned as appropriate, which will wipe out the old LVM.

[nijinashok00]

Before mounting logical volume you have to format the logical volume with appropriate file system. Since your error message is wrong file system type, the logical volume is not formatted with appropriate file system. To check the file system type use

parted /dev/sdc print

. If it's not the supported file format use this to format your logical volume

mkfs.ext4 /dev/lvsystem/lvorcl

I don't know ext4 will support OEL 5.5. So replace ext4 with your OS file system.

[cnamejj]

Before mounting logical volume you have to format the logical volume with appropriate file system. Since your error message is wrong file system type, the logical volume is not formatted with appropriate file system. To check the file system type use

parted /dev/sdc print

. If it's not the supported file format use this to format your logical volume

mkfs.ext4 /dev/lvsystem/lvorcl

I don't know ext4 will support OEL 5.5. So replace ext4 with your OS file system.

My assumption from reading the original post was that the goal was to recover data from the LVM. If so, you don't want to "mkfs" since it will create an empty filesystem making recovery much, much harder.