How do I shrink my LVM volume?

How do I shrink my LVM volume?

How to Shrink an LVM Volume Safely on Linux

1. Step 1: First take a full backup of your filesystem.
2. Step 2:Start and force a filesystem check.
3. Step 3:Resize your filesystem before resize your Logical Volume.
4. Step 4: Reduce LVM size.
5. Step 5: Re-run resize2fs.

What command would you use to resize an LVM volume group to include an additional physical volume?

Extend the Volume Group The vgextend command allows you to add one or more initialized Physical Volumes to an existing VG to extend its size.

How do you do Lvreduce?

Let’s wee what are the 5 steps below.

1. unmount the file system for reducing.
2. Check the file system after unmount.
3. Reduce the file system.
4. Reduce the Logical Volume size than Current size.
5. Recheck the file system for error.
6. Remount the file-system back to stage.

What is LE and PE LVM?

physical extent (PE) 3.5. logical extent (LE) 3.6. Tying it all together 3.7. mapping modes (linear/striped) 3.8.

How do you remove a physical volume from a logical volume?

If there are enough free extents on the other physical volumes in the volume group, you can execute the pvmove command on the device you want to remove with no other options and the extents will be distributed to the other devices. Use the vgreduce command to remove the physical volume /dev/sdb1 from the volume group.

How do you use Pvremove?

Removing used PV from VG

1. Extend the VG.
2. Confirm the disk spaces using the pvs command.
3. Run the pvmove command for the original PV that in this example is /dev/sdb.
4. Reduce the VG in order to release the /dev/sdb PV.
5. Check the /dev/sdb (origin) is completely free now.

What is the difference between Lvresize and Lvextend?

The difference is that lvextend can only increase the size of a volume, whereas lvresize can increase or reduce it. This makes lvresize more powerful but more dangerous.

How can I recreate removed LVM logical volumes?

Verify the archive file under the directory/etc/lvm/archive when the logical volume was removed.

Before running the actual restore you can do a dry run using the -test switch as shown below.

If the above dry run is successful,do the actual restore.

Verify if the deleted volume has been successfully restored or not using ‘lvscan’.

How to delete a volume group in LVM?

Check mounted Logical Volume using df command. First you need to check the mounted volume and the mount point name using df -h command.

Unmount the Volume using umount command. Once you identified the mount point,you need to remove it by using umount/u01 command as shown below.

Disable Logical Volume using lvchange command.

What is logical volume management (LVM)?

Logical Volume Management (LVM) is a method used by Linux to manage storage volumes across different physical hard disks. This is not to be confused with RAID. However, it can be thought of in a similar concept as RAID 0 or J-Bod.

What is LVM mirroring?

LVM mirrors are for replication of a logical volume to a different physical volume. It’s essentially meant to “move the data to a different disk”. The mirror is then broken and the old location of the data freed for use; the existing data is utilized at the new location instead.