Expand Disk Size (VMware)

All storage volumes are configured as LVM devices. They can be resized online by providing the underlying virtualization technology to support online disk expansion. Disks are expanded automatically via cloud-init when the VM boots.

To expand disks after boot:

1. Login into the SD-WAN Orchestrator system console.
2. Identify the physical disks that support the database volume.

   vgs -o +devices store

   Example:

   root@vco:~# vgs -o +devices db_data
      \  VG      #PV #LV #SN Attr   VSize   VFree   Devices
        store   1   1   0 wz--n- 500.00g 125.00g /dev/sdb(0)

3. Identify the physical disk attachment.

   lshw -class volume

   Example:

   /dev/sdb is attached to scsi@2:0.1.0 (Host: scsi2 Channel: 00 Id: 01 Lun: 00)

   root@vco:~# lshw -class volume
     *-volume
          description: EXT4 volume
          vendor: Linux
          physical id: 1
          bus info: scsi@2:0.0.0,1
          logical name: /dev/sda1
          logical name: /
          version: 1.0
          serial: 9d212247-77c4-4f98-a5c2-7f8470fa2da8
          size: 10239MiB
          capacity: 10239MiB
          capabilities: primary bootable journaled extended_attributes large_files huge_files dir_nlink recover extents ext4 ext2 initialized 
          configuration: created=2016-02-22 20:49:38 filesystem=ext4 label=cloudimg-rootfs lastmountpoint=/ modified=2016-02-22 21:18:58 mount.fstype=ext4 mount.options=rw,relatime,data=ordered mounted=2016-10-06 23:22:04 state=mounted 
     *-disk:1
          description: SCSI Disk
          physical id: 0.1.0
          bus info: scsi@2:0.1.0
          logical name: /dev/sdb
          serial: v5V2zm-Lvbh-Mfx3-W8ki-COI9-DAtP-RXndhu
          size: 500GiB
          capacity: 500GiB
          capabilities: lvm2
          configuration: sectorsize=512
     *-disk:2
          description: SCSI Disk
          physical id: 0.2.0
          bus info: scsi@2:0.2.0
          logical name: /dev/sdc
          serial: fTQFJ2-giAV-WsXL-1Wha-V305-oQkV-qqS3SA
          size: 100GiB
          capacity: 100GiB
          capabilities: lvm2
          configuration: sectorsize=512

4. On the hypervisor host, locate the disk attached to the VM using bus information. Example: SCSI(0:1)
5. Extend the virtual disk. For instructions, see https://knowledge.broadcom.com/external/article/344854.
6. Re-login into the SD-WAN Orchestrator system console.
7. Re-scan the block device for the resized physical volume. Example:

   echo 1 > /sys/block/$DEVICE/device/rescan

   Example:

   echo 1 > /sys/block/sdb/device/rescan

8. Resize the LVM physical disk.

   pvresize /dev/sdb

9. Determine the amount of free space in the database volume group.

   vgdisplay store |grep Free

   Example:

   root@vco:~# vgdisplay store |grep Free
   Free  PE / Size       34560 / 135.00 GiB

10. Extend the database logical volume.

    lvextend -r -L+#G /dev/store/data

    Example:

    root@vco1:~# lvextend -r -L+1G /dev/store/data
      Size of logical volume store/data changed from 400.00 GiB (102400 extents) to 401.00 GiB (102656 extents).
      Logical volume store/data successfully resized.
    resize2fs 1.44.1 (24-Mar-2018)
    Filesystem at /dev/mapper/store-data is mounted on /store; on-line resizing required
    old_desc_blocks = 50, new_desc_blocks = 51
    The filesystem on /dev/mapper/store-data is now 105119744 (4k) blocks long.

11. View the new size of the volume.

    df -h /dev/store/data

    Example:

    root@vco:~# df -h /dev/store/data
    Filesystem               Size  Used Avail Use% Mounted on
    /dev/mapper/store-data  379G  1.2G  359G   1% /store