Block storage volumes are network-based block devices that provide additional data storage for Droplets. You can move them between Droplets and resize them at any time.
If you need more storage space than your current volume provides, you can attach additional volumes to the same Droplet or expand the size of a current volume.
Increasing the size of a volume has two steps:
You cannot decrease the size of a volume. In other words, volume resizes are irreversible.
Data is not always sequentially written in memory, so reducing the available space would risk data loss and filesystem corruption. To decrease the size of a volume, create a smaller volume and transfer the contents of an existing volume to it using a tool like rsync.
We strongly recommend taking a snapshot of the volume before resizing.
Any changes to a filesystem can lead to data loss if something goes wrong. We strongly recommend backing up the volume's data before resizing. If you use snapshots, you can delete the snapshot after confirming that the resize was successful.
After you create a backup of the volume, you can increase the volume's size in the control panel. From the volume's More menu, choose Increase size.
In the window that opens, select a new size for the volume. You can choose any size at least 1 GB larger than the volume's current size.
Click Resize volume to change the volume to the selected size.
In order to use the additional space, you need to expand the volume's filesystem.
For unpartitioned volumes using the ext4 filesystem, pass the
/dev/disk/by-id volume identifier to
sudo resize2fs /dev/disk/by-id/scsi-0DO_example
resize2fs 1.42.13 (17-May-2015) Filesystem at /dev/disk/by-id/scsi-0DO_example is mounted on /mnt/volume-example; on-line resizing required old_desc_blocks = 25, new_desc_blocks = 32 The filesystem on /dev/disk/by-id/scsi-0DO_example is now 131072000 (4k) blocks long.
For unpartitioned volumes using the XFS filesystem, pass the mount point to the
sudo xfs_growfs /mnt/your_mount_point
meta-data=/dev/sda isize=512 agcount=4, agsize=32768000 blks = sectsz=512 attr=2, projid32bit=1 = crc=1 finobt=1 spinodes=0 data = bsize=4096 blocks=131072000, imaxpct=25 = sunit=0 swidth=0 blks naming =version 2 bsize=4096 ascii-ci=0 ftype=1 log =internal bsize=4096 blocks=64000, version=2 = sectsz=512 sunit=0 blks, lazy-count=1 realtime =none extsz=4096 blocks=0, rtextents=0 data blocks changed from 131072000 to 157286400
Verify that the larger filesystem is available with
df -h -x tmpfs -x devtmpfs
Filesystem Size Used Avail Use% Mounted on /dev/vda1 20G 1.1G 18G 6% / /dev/sda 197G 60M 187G 1% /mnt/volume-nyc1-01
Depending on the Droplet's operating system, you may also need to reboot to see the volume's new size.