Google Cloud resize persistent disk

March 3, 2022 . 3 MIN READ

In the Google Cloud Console, go to the VM instances

Go to VM instances

Next to the instance that has the new attached disk, click the SSH The browser opens a terminal connection to the instance.
Use the dfcommand and the lsblk command to list the size of the file system and find the device names for your disks.

4. $ sudo df -Th5. 6. Filesystem Type Size Used Avail Use% Mounted on7. /dev/sda1 ext4 9.7G 1.2G 8.5G 12% /8. /dev/sdb ext4 250G 60M 250G 1% /mnt/disks/disk-19. 10. $ sudo lsblk11. 12. NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT13. sda 8:0 0 20G 0 disk14. └─sda1 8:1 0 10G 0 part /15. sdb 8:16 0 500G 0 disk /mnt/disks/disk-116.

This example includes the following disks:

Boot disk: The /dev/sda1partition is on a boot disk that has been resized to 20 GB. The partition table and the file system provide only 9.7 GB to the operating system.
Non-boot data disk: The /dev/sdbnon-boot data disk has no partition table, but the file system on that disk provides only 250 GB to the operating system. The mount directory for this disk is /mnt/disks/disk-1.

The df command shows that the /dev/sda1 partition is mounted as the root file system, and the /dev/sdb disk is mounted as a non-boot data disk at /mnt/disks/disk-1. Make note of the Type column, which indicates if your disk uses an ext4 or xfs file system.

Resize the root partition and file system on the boot disk. This example assumes the VM image does not support automatic root partition and file system resize.
1. Resize the root partition by using parted. For example, the following partedcommand in interactive mode expands partition 1 of /dev/sda to the maximum possible size:

b. sudo parted /dev/sdac. …d. (parted) resizeparte. Partition number? 1f. Warning: Partition /dev/sda1 is being used. Are you sure you want to continue?g. Yes/No? yh. End? [10.7GB]? 100%i. (parted) quit

Move GPT data structures to the end of the disk to align the GPT table.

k. sudo sgdisk –move-second-header /dev/sda

Read the new partition table using partprobe.

m. sudo partprobe /dev/sda

If you are using ext4, use the resize2fscommand to extend the file system:

o. sudo resize2fs /dev/sda1

If you are using xfs, use the xfs_growfscommand to extend the file system:

q. sudo xfs_growfs -d /

Resize the file system on the non-boot data disk.
- . If you are using ext4, use the resize2fscommand to extend the file system:

a. sudo resize2fs /dev/DEVICE_NAME

Replace DEVICE_NAME with the device name for the disk. In this example, the device name is /dev/sdb.

If you are using xfs, use the xfs_growfscommand to extend the file system:

c. sudo xfs_growfs MOUNT_DIR

Replace MOUNT_DIR with the mount point of the device. You can find the mount point listed in the MOUNTPOINT column in the output of the lsblk command.