No more space in root filesystem, how could I increase the size?

Question

This is my filesystem :

 $ df -h -x tmpfs -x devtmpfs
Filesystem               Size  Used Avail Use% Mounted on
/dev/mapper/fedora-root  9.8G  7.6G  1.7G  83% /
/dev/mapper/fedora-home   50G   27G   21G  57% /home
/dev/sda9               1022M  8.4M 1014M   1% /boot/efi

And as you can see the root filesystem is full.

I already tried to delete all the useless things but still I don't have enough space.

How could I increase it ? I have 60 giga left in my hard drive, is there any way I can move my root filesystem there ?

Answer 1

Good news! pvscan shows PV /dev/sda10 VG fedora lvm2 [141.56 GiB / 77.56 GiB free] — so you should be able to add up to 77.56GiB to any of your filesystems. I'd suggest adding it in smaller blocks (like 10GiB), so you have a reserve to put into /home if you decide you need growth there later.

This is a relatively well-tested and generally safe operation, but all root-level volume and filesystem operations have some risk — make sure you have a functioning backup first. Then....

You can extend your root logical volume to use the free space with lvextend, like this:

sudo lvextend --size +10G --resizefs /dev/fedora/root

(Or -L and -r instead of --size and --resizefs, if you prefer short options.)

Answer 2

More general answer for LVM:

Firstly - make sure you have additional unpartitioned storage. Then:

1. Use fdisk to create new partition (safer than expanding existing one)

2. Use pvcreate to create physical LVM volume:

   pvcreate /dev/sdxx
   

3. Use vgextend to extend existing LVM group using new physical volume:

   vgextend groupname /dev/sdxx
   

   You can get group names with vgdisplay

4. Use lvextend on lvm mapper to expand lvm volume:

   lvextend -l +100%FREE /dev/mapper/xxx
   

5. Grow the filesystem:

   xfs_growfs /dev/mapper/xxx
   

   Or

   resize2fs /dev/mapper/xxx
   

Answer 3

The / filesystem may be a particular challenge, as that needs to be supported by the boot loader.

This answer doesn't specify how to accomplish the requested task, but does provide a workaround.

Another option: find a sub-directory (e.g., /big/) which has lots of data. Then copy that data onto your 60GB of space, mv the directory with lots of space (e.g., mv /big /bigback), and mount your 60GB (or a portion of it) onto /big. After confirming everything works as expected, rm /bigback to re-gain space on /

Answer 4

Another option, before you attempt anything more drastic, is to use BleachBit to remove temporary and other unneeded files.

From wikipedia:

BleachBit is a free and open-source disk space cleaner, privacy manager, and computer system optimizer.

It should be in the package manager, so this should do it.

sudo yum install bleachbit

Or download from their page.