Configure and mount storage devices

The first step in the process of installing Object Storage for RPCO is configuring and mounting the storage devices. Object Storage for RPCO requires a minimum of three object storage devices with mounted storage drives.

The example commands in this procedure assume that the storage devices are labeled sdc through sdg.

1. Determine the storage devices on the node to use for Object Storage.

2. Format each of these devices with XFS. While formatting the devices, add a unique label for each device.

   Note

   Without labels, a failed drive can cause mount points to shift and data to become inaccessible.

   For example, create the file systems on the devices by using the mkfs command:

   $ apt-get install xfsprogs
   
   $ mkfs.xfs -f -i size=1024 -L sdc /dev/sdc
   $ mkfs.xfs -f -i size=1024 -L sdd /dev/sdd
   $ mkfs.xfs -f -i size=1024 -L sde /dev/sde
   $ mkfs.xfs -f -i size=1024 -L sdf /dev/sdf
   $ mkfs.xfs -f -i size=1024 -L sdg /dev/sdg
   

3. Add the mount locations to the /etc/fstab file so that the storage devices are remounted on boot. The following example mount options are recommended when using XFS.

   Note

   Finish all modifications to the /etc/fstab file before mounting the new file systems created within the storage devices.

   LABEL=sdc /srv/node/sdc xfs noatime,nodiratime,nobarrier,logbufs=8,nobootwait 0 0
   LABEL=sdd /srv/node/sdd xfs noatime,nodiratime,nobarrier,logbufs=8,nobootwait 0 0
   LABEL=sde /srv/node/sde xfs noatime,nodiratime,nobarrier,logbufs=8,nobootwait 0 0
   LABEL=sdf /srv/node/sdf xfs noatime,nodiratime,nobarrier,logbufs=8,nobootwait 0 0
   LABEL=sdg /srv/node/sdg xfs noatime,nodiratime,nobarrier,logbufs=8,nobootwait 0 0
   

4. Create the mount points for the devices by using the mkdir command:

   $ mkdir -p /srv/node/sdc
   $ mkdir -p /srv/node/sdd
   $ mkdir -p /srv/node/sde
   $ mkdir -p /srv/node/sdf
   $ mkdir -p /srv/node/sdg
   

   The mount point is referenced as the mount_point parameter in the swift.yml file (/etc/openstack_deploy/conf.d/swift.yml).

5. Mount the storage devices by using the mount command:

   $ mount /srv/node/sdc
   $ mount /srv/node/sdd
   $ mount /srv/node/sde
   $ mount /srv/node/sdf
   $ mount /srv/node/sdg
   

To view an annotated example of the swift.yml file, see Object Storage configuration files.

For the devices mounted in the preceding steps, the mount locations would be as follows:

Device	Mount location
/dev/sdc	/srv/node/sdc
/dev/sdd	/srv/node/sdd
/dev/sde	/srv/node/sde
/dev/sdf	/srv/node/sdf
/dev/sdg	/srv/node/sdg

The entry in the swift.yml for the mounted devices would be as follows:

#    drives:
#        - name: sdc
#        - name: sdd
#        - name: sde
#        - name: sdf
#        - name: sdg
#    mount_point: /srv/node