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Attach and Mount a Volume

Attach to a VM​

From the volume detail page, click Attach to VM and select a target VM in the same zone.

Or from the VM's create form: select an existing volume under Select or Create Volumes.

Automatic mounting​

Attached volumes are mounted automatically inside the VM; no manual steps are needed in the default flow:

  • The disk appears as a SCSI device, e.g. /dev/sdb.
  • If the disk is blank and Format volume on creation was checked, it is formatted with ext4 on first attach. A disk that already has a filesystem is never reformatted, so re-attaching a volume preserves its data.
  • The volume is mounted at /mnt/rumpty/<volume-id> and an /etc/fstab entry is added so the mount persists across reboots.

The exact device name and mount path are shown on the volume detail page under Attachment.

Mount manually​

If you created the volume with Format volume on creation unchecked, a blank disk is attached raw: it is not formatted or mounted automatically. SSH into the VM and set it up yourself:

# Confirm the device name
lsblk

# Format the blank disk
mkfs.ext4 /dev/sdb

# Create a mount point and mount
mkdir -p /mnt/data
mount /dev/sdb /mnt/data

# Persist across reboots
echo '/dev/sdb /mnt/data ext4 defaults 0 0' >> /etc/fstab

Detach​

Make sure no process is writing to the volume, then unmount it:

umount /mnt/rumpty/<volume-id>

Then click Detach on the volume detail page. The volume returns to available status and can be attached to a different VM.

A volume cannot be deleted while it is attached; detach it first.