Fedora Block Device Full How - Extend Partition

DustinB3403

Ok asking the experts here, I have a VM that an long-gone intern setup with a tiny partition, only 49GB, and I need to extend it.

Here is what I have.

How can I extend /dev/fedora/root to take all of /dev/xvda ?

Francesco Provino

I see you are using LVM (that's good!), so…

First, create a new block device in the free space;
PVadd the new block device to your VG (fedora, I think);
lvextend your root LV;
xfs_growfs your root FS, and you'll be done ;).

Francesco Provino

Of course, you can incrementally add multiple virtual disks to the VM, adding it as PV to your VG etc…

DustinB3403

@Francesco-Provino OK give me a moment, working to create the block device.

travisdh1

@DustinB3403

pvcreate /dev/newpartition
vgextend fedora /dev/newpartition
lvextend -l 100%FREE /dev/fedora/root /dev/newpartition

I don't know the command to expand an ext4 file system off the top of my head

DustinB3403

@travisdh1

stacksofplates

Is /dev/xvda2 mounted somewhere?

travisdh1

@DustinB3403 If you're sure that /dev/xvda2 is not being used by something else, try the pvcreate with -ff. It should force the command to complete.

Francesco Provino

@travisdh1 said in Fedora Block Device Full How - Extend Partition:

@DustinB3403
pvcreate /dev/newpartition
vgextend fedora /dev/newpartition
lvextend -l 100%FREE /dev/fedora/root /dev/newpartition
I don't know the command to expand an ext4 file system off the top of my head

His root is XFS, so xfs_grows should do the trick.

DustinB3403

The system is saying that xvda2 is mounted.

Yet I have no idea how it's mounted.

stacksofplates

@DustinB3403 said in Fedora Block Device Full How - Extend Partition:

The system is saying that xvda2 is mounted.

Yet I have no idea how it's mounted.

df -h

Francesco Provino

@DustinB3403 said in Fedora Block Device Full How - Extend Partition:

The system is saying that xvda2 is mounted.

Yet I have no idea how it's mounted.

So, just grep /etc/mtab for xvda2.

DustinB3403

@stacksofplates

Francesco Provino

@DustinB3403 said in Fedora Block Device Full How - Extend Partition:

@stacksofplates

So, I think you can safely force the pvcreate.

DustinB3403

@Francesco-Provino when I try for force pvcreate using

pvcreate /dev/xdva2 -ff it results in

stacksofplates

Oh, xvda2 is your root filesystem. What's the output of fdisk -l? It looks like it should be xvda3

xvda1 is the boot partition.

DustinB3403

@stacksofplates

stacksofplates

Did you create a partition for the free space? You need to use fdisk to make a third primary partition.

DustinB3403

@stacksofplates ok, following this here.

DustinB3403

Dumb question, would it be easier for me to simply add a separate drive, and then extend the root drive into the new drive?