Filesystem errors are reported in LOG files

Symptoms

You’re likely here because you saw a message saying “Really low disk space left on path on host: very low number%”.

Resolution

Expanding a disk in GCP

As a last resort you may need to expand either a persistent or root volume in GCP. This can be done online for persistent mounted disks and root volumes. In the case of root volumes terraform will try to recreate the resource so it will need to be done in the console manually, and then made in terraform.

• Make the adjustment in terraform or the console to for the disk, this can be done while the instance is running.
• run sudo lsblk to see that the new space is available: Example:

sudo lsblk
NAME   MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
sdb      8:16   0   50G  0 disk /var/log
sda      8:0    0  100G  0 disk
└─sda1   8:1    0   20G  0 part /

• run growpart <device> <partition number> to increase the partition to the space available. Note that there is a space between the device and the partition number..

## Root volume example
sudo growpart /dev/sda 1

• confirm that the space is now taken with sudo lsblk. Example:

$sudo lsblk
NAME   MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
sdb      8:16   0   50G  0 disk /var/log
sda      8:0    0  100G  0 disk
└─sda1   8:1    0  100G  0 part /

• Resize the filesystem to use the new space with sudo resize2fs <partition>. Example:

resize2fs /dev/sda1