Adding disks for use in ASM (FlashGrid Server on GCP)

When adding new disks make sure that each disk group has disks of the same size.

1. Create new disk to the VM on CLI and then attach them using --device-name=shared-NN according to your environment, these disks will be shared automatically by FlashGrid Storage Fabric. Example:

    gcloud compute disks create mydbserver-5c9d98fc-shared-7 --size 40 --type hyperdisk-balanced
    gcloud compute instances attach-disk mydbserver-5c9d98fc --disk=mydbserver-5c9d98fc-shared-7 --device-name=shared-7

2. Confirm FlashGrid names of the new drives, e.g. mydbserver.shared-7

   [fg@mydbserver ~] $ flashgrid-node

   If the new drives not listed then check that the corresponding devices (e.g. /dev/shared-7) are visible in the OS.
   
   If they are visible in the OS then, as the root user, run flashgrid-node reload-config and check the output of flashgrid-node again.
   
   If they are not visible in the OS or they appear with a different name then double-check that you have attached them with correct device name. If you need to detach the disks you can use:

3. Add the new disks to an existing disk group (or create a new disk group). Example:

   [fg@mydbserver ~] $ flashgrid-dg add-disks -G MYDG -d /dev/flashgrid/mydbserver.shared-[3-5]