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Increase VM Disk Size

On existing installations where the virtual machine (VM) disk size does not meet the minimum system requirements described in Routing Director System Requirements, you must increase disk size. Perform the following steps to increase disk size.
  1. Power off the VM.
  2. Increase the primary virtual disk and Ceph virtual disk sizes from the hypervisor. Ceph uses the second disk attached to the virtual machine.
    To increase disk size, perform the steps corresponding to your hypervisor:

    • VMware ESXi 8.0.

      Note: If your VM has a snapshot, the disk option to increase size is grayed out and unavailable. To increase the hard disk for a VM with a snapshot, you must first delete the snapshot in the VMware ESXi 8.0 server.

    • KVM

    • Proxmox VE

  3. Power on the VM.
  4. Log in to the Linux root shell of the VM.
  5. Verify that the disk size is increased. For example:

    Here vda for the primary disk has increased to 400-GB and vdb for Ceph has increased to 100-GB.

  6. Restart Ceph OSD to detect the size change. For example:

    1. Verify the existing OSD size.

      1. Launch the Rook tools pod.

      2. Retrieve the current OSD size.

        In this example, you are modifying the OSD on vm4. Here, we still see original size, which is ~50-GB (USED+AVAIL).

    2. Go back to the Linux root shell and determine the OSD pod that runs on the node for which the disk size is to be increased (vm4).

    3. Restart the pod.

    4. Verify the new size.

      1. Launch the Rook tools pod and execute ceph osd status again.

        Here, the OSD on vm4 has increased to ~100-GB.

      2. Verify that the total size has also increased.

        Here, the total size has increased from 200-GB to 250-GB.

    Note:

    In this example, you increased the size of Ceph storage on one node VM. You must increase the size on all the node VMs to make the storage value consistent across all the nodes. Repeat these steps for the remaining three VMs.
  7. After you increase the total size of Ceph storage, you must update the allocation quota between object storage and PVC. Log in to Paragon Shell of the VM to increase the allocation quota.
    Note:

    After the total Ceph storage allocation is increased, if you want to increase the TimescaleDB PVC size, you must increase it manually. To increase the PVC size, see Increase Timescale DB PVC.

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