In this article, we will delve into the process of mounting a Logical Volume Management (LVM) partition that shares the same Volume Group (VG) name as the current partition in Ubuntu. This situation can arise when you have cloned a disk or restored from a backup.
To mount a LVM partition with the same VG name as the current partition in Ubuntu, you need to first identify the UUID of the LVM partition using the vgs command. Then, rename the volume group using the vgrename command. Activate the renamed volume group using the vgchange command. Finally, mount the LVM partition using the mount command.
What is LVM?
LVM is a tool for logical volume management which includes allocating disks, striping, mirroring and resizing logical volumes. It provides a method of allocating space on mass-storage devices that is more flexible than conventional partitioning schemes.
Identifying the UUID of the LVM Partition
The first step involves identifying the UUID (Universally Unique Identifier) of the LVM partition that you wish to mount. This can be done using the vgs command, which lists all the volume groups and their UUIDs.
sudo vgs -vThis command will display all the volume groups available on your system, along with their details. The UUID is a unique identifier for the volume group, which we will need for renaming the volume group.
Renaming the Volume Group
Once you have identified the correct volume group, you can proceed with renaming it. This is done using the vgrename command.
sudo vgrename <UUID> new_volgroup_nameIn the command above, replace <UUID> with the UUID of the volume group you want to rename, and new_volgroup_name with the desired name for the volume group.
The vgrename command is used to rename a volume group. It takes two arguments: the UUID of the volume group to be renamed, and the new name for the volume group.
Activating the Renamed Volume Group
After renaming the volume group, the next step is to activate it. This can be done using the vgchange command.
sudo vgchange -a yThe vgchange command is used to change the attributes of a volume group. The -a y option activates all known volume groups.
Mounting the LVM Partition
Now that the volume group has been renamed and activated, you can proceed with mounting the LVM partition. This is done using the mount command.
sudo mount /dev/mapper/new_volgroup_name-root /mnt/externalIn the command above, replace new_volgroup_name with the new name you assigned to the volume group, and /mnt/external with the desired mount point.
The mount command is used to attach a filesystem located on some device to the larger filesystem.
Conclusion
In this article, we have covered the process of mounting an LVM partition with the same VG name as the current partition in Ubuntu. This involves identifying the UUID of the LVM partition, renaming the volume group, activating the renamed volume group, and finally, mounting the LVM partition.
Remember, it’s important to ensure that the volume groups have unique names to avoid any conflicts. If you have multiple volume groups with the same name, you should consider changing the name of one of them to prevent problems.
If you encounter any issues with booting after renaming the volume group, you may need to update the necessary configuration files. For more information on this and other related topics, you can refer to the official Ubuntu documentation.
We hope this guide has been helpful. If you have any further questions or need additional assistance, don’t hesitate to reach out.
LVM provides a flexible method of allocating space on mass-storage devices by allowing you to allocate disks, stripe data, mirror volumes, and resize logical volumes.
You can use the vgs command with the -v option to list all the volume groups and their UUIDs. The UUID is a unique identifier for the volume group.
To rename a volume group, you can use the vgrename command followed by the UUID of the volume group you want to rename and the desired new name for the volume group.
To activate a renamed volume group, you can use the vgchange command with the -a y option to activate all known volume groups.
Once the volume group has been renamed and activated, you can use the mount command to mount the LVM partition. Replace the volume group name with the new name you assigned and specify the desired mount point.
It is important to ensure that volume groups have unique names to avoid conflicts. If you have multiple volume groups with the same name, consider changing the name of one of them to prevent problems.
If you experience booting issues after renaming the volume group, you may need to update the necessary configuration files. Refer to the official Ubuntu documentation for more information on resolving such issues.
For more information on LVM and related topics, you can refer to the official Ubuntu documentation available at Ubuntu documentation.
