If the partition is part of a volume group you'll need to mount the device mapper part (if the VG is active): # scan if the VG is recognized vgs # activate VG if necessary vgchange -ay <VG_NAME> # scan for logical volumes lvs # mount it mount /dev/<VG_NAME>/<LV_NAME> /mnt It can get tricky if your own system's VG has the same name, I would try to avoid that. Zitat von KK CHN <kkchn.in@gmail.com>:
Members,
We are in need of migrating of VMs from another vendor who has hosted all the VMs on their host machine using KVM. hypervisor. No OpenStack they are using.
We want to migrate these VMs to our fresh OpenStack Ussuri environment setup with two host machine which using KVM and Debian as Host Operating System.
( The VMs are in RedHat,CentOS and Windows machines )
The vendor has provided each VM as Three files(qcow2 files). Because they are using additional disks for each partition. They are telling us they can provide this way only. They are unable to provide as single file( I'm also not sure whether there is a way to get it as single file ? )
The existing Vendor provides the files for each VM as follows.
1. First file is Operating Sytem ( CentOS) qcow2 image
2. Second file is Boot file system as qcow2 image.
3. Third file is data volume(LVM data also qcow2 image) : The data volume which contains the application data.
When we are uploding these files to OpenStack glance using Horizon dashboard the first two files Operating Sytem and boot files are detected for the VM. But the Third file unable to attach. Its not detecting.
So I tried manually mount the data volume in command line but it throws error "unknown filesystem type 'LVM2_member'
#mount /dev/vdc2 /mnt/
mount:unknown filesystem type 'LVM2_member' // here vdc2 is the data volume in question.
// /dev/vda1 is the OS partion which when uploaded to glance through horizon no error in mounting. similarly /dev/vdc1 the boot partion also able to attach through horizon dash board.
Only the data volume is not getting attached and when manually tried to mount that volume /dev/vdc2 throws the error
"mount:unknown filesystem type 'LVM2_member' "
How to resolve this issue ? whats the root cause ?
Kindly share your inputs .
Thanks in advance Kris