Instructions for Mounting Permanent Storage

By Riccardo Murri

It is possible to attach permanent disk space to Elasticluster, but at the moment it’s still a manual process. It usually goes like this:

  1. Create cluster
  2. Create volume
  3. Attach volume to cluster frontend (OpenStack has an “attach” command, other clouds might use a different term)
  4. (First time only) Find out what device name the volume has gotten in Linux (e.g. /dev/vdb – it can usually be seen by running sudo dmesg | tail)
  5. (First time only) Format the volume::
mkfs.ext4 -L /myvolume /dev/vdb
  1. (First time only) Define volume mount in /etc/fstab:: 
     # add this line to /etc/fstab
 LABEL=/myvolume /myvolume ext4  defaults 0 0
  2. Mount the volume:: 
     sudo mkdir -pv /myvolume
 sudo mount /myvolume

    If you do not want the volume to be automatically mounted after a reboot, replace defaults with defaults,noauto in the /etc/fstab line at step 6.

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