How do I expand the storage pool or volume capacity#

Environment

RAID Model: SR1000 or SR1010, SR1001

Host Hardware: Intel, AMD

Operating System: Linux 

Issue

User would like to expand the Volume or storage.

Resolution

1. Set up the LVM with SupremeRAID solution wit original size.

   # graidctl c pd /dev/nvme0-7

  # graidctl c dg raid5 0-7

  # graidctl c vd 0 

  # pvcreate /dev/gdg0n1

  # vgcreate vg-graid /dev/gdg0n1

  # lvcreate -n graid vg-graid -l 100%VG

 2. create mount point and mount device (take "ext4" filesystem format as example)

  # mkdir -p /mnt/graid

  # mkfs.ext4 /dev/vg-graid/graid

  # mount -o noatime,nodiratime,nobarrier /dev/vg-graid/graid /mnt/graid

 3. Setup fstab for auto-mount 

  a. add the "ExecStartPost=vgchange -ay" at the next of "Execstart" in the "/lib/systemd/system/graid.service"
     # vim /lib/systemd/system/graid.service
     

  b. query the uuid by "/dev/disk/by-uuid/" to get the lvm's uuid

   # ls -al /dev/disk/by-uuid/

  c. edit "/etc/fstab/ by add the following parameter
   [fs_spec] [fs_file] [fs_vfstype] [fs_mntops] [fs_freq] [fs_passno]
   UUID=[lvm's uuid] [mount point] [filesystem format] x-systemd.wants=graid.service,x-systemd.automount,x-systemd.idle-timeout=600,nofail  0 0

   example:

   UUID=cac5749b-d7d0-4600-bdc1-c5153365313d /mnt/graid ext4 x-systemd.wants=graid.service,x-systemd.automount,x-systemd.idle-timeout=600,nofail,noatime,nodiratime,nobarrier 0 0

4. extend lvm size and mount point

  a. extend lvm size
    # vgdiplay vg-graid

    # lvdisplay --maps /dev/vg-graid/graid 
    create a new pd/dg/vd for extend volume

    #  graidctl c pd /dev/nvme8-15

    # graidctl c dg raid5 8-15

    # graidctl c vd 1 

    # pvcreate /dev/gdg1n1
    extend lvm size

    #  vgextend vg-graid /dev/gdg1n1
    # vgdiplay vg-graid

     # lvextend -l +100%free /dev/vg-graid/graid

     # lvdisplay --maps /dev/vg-graid/graid 
    # resize2fs /dev/vg-graid/graid
    

Now your mount point is already extended with the new volume.

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