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i have a LUN connect to my server in this situation:

fdisk /dev/mapper/mpathg WARNING: fdisk GPT support is currently new, and therefore in an experimental phase. Use at your own discretion. Welcome to fdisk (util-linux 2.23.2).

Changes will remain in memory only, until you decide to write them. Be careful before using the write command.

Comando (m per richiamare la guida): p

Disk /dev/mapper/mpathg: 68.7 GB, 68719476736 bytes, 134217728 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 32768 bytes / 32768 bytes Disk label type: gpt Disk identifier: 0CD9B4F8-3707-4E10-A1A6-D7CEBB9E99C6

     Start          End    Size  Type            Name

1 2048 411647 200M EFI System EFI System Partition

2 411648 2508799 1G Microsoft basic

3 2508800 133380095 62,4G Linux LVM

ok,so i've a LVM partition. But if i Mount it this is a result:

[root@xxx dev]# mount /dev/mapper/mpathg3 /mnt mount: unknown filesystem type 'LVM2_member'

how can i Mount this partition? i've already installet lvm on my server with a volume Group and a logical volumer already running

thanx Sergio

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4
  • You've only created an underlying chunk of storage suitable to be used with LVM. You now need to create a physical volume, assign it to a volume group and create a logical volume in that volume group. You then create a filesystem of whatever type you want on that logical volume. Or you could just recreate partition 3 with a type suitable for you want. But in most cases, using LVM is highly recommended. IF YOU HAVE VALUABLE DATA ON PARTITION 3 (OR ARE UNCERTAIN) BACK IT UP IF NECESSARY BEFORE DOING ANYTHING.
    – Brandon Xavier
    Mar 23, 2018 at 12:28
  • hi Brandon, on LVM partition i've data on it. so i need to mount this partition, copy some files from this, and then umount LVM partition.
    – sergio orlando
    Mar 23, 2018 at 13:28
  • Try an 'lvs' or 'lvscan' to see if the system recognizes any existing logical volumes - if so, that's what you should be working with rather than mpathg3. If not, you may need to backtrack thru the process with a vgscan/vgs and pvscan/pvs to understand the state your lvm is in.
    – Brandon Xavier
    Mar 23, 2018 at 22:47
  • partition over lun is not a good idea
    – c4f4t0r
    Jan 22, 2019 at 2:48

1 Answer 1

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  1. Scan for volume groups

    lvm vgscan -v

  2. Activate all Volume Groups

    lvm vgchange -y

  3. List Logical Volumes

    lvm lvs -all

  4. You have now activated the volumes and have all the information you need to mount them

    mkdir /mnt/your-mount-point

    mount /dev/volumegroup/logical-volume /mnt/your-mount-point

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