Home OpenStack-Ansible Swift
This section offers a set of prerequisite instructions for setting up Object Storage (swift) storage devices. The storage devices must be set up before installing swift.
Procedure 5.1. Configuring and mounting storage devices
Object Storage recommends a minimum of three swift hosts
with five storage disks. The example commands in this procedure
use the storage devices sdc
through to sdg
.
Determine the storage devices on the node to be used for swift.
Format each device on the node used for storage with XFS. While formatting the devices, add a unique label for each device.
Without labels, a failed drive causes mount points to shift and data to become inaccessible.
For example, create the file systems on the devices 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
Add the mount locations to the fstab
file so that the storage
devices are remounted on boot. The following example mount options
are recommended when using XFS:
LABEL=sdc /srv/node/sdc xfs noatime,nodiratime,nobarrier,logbufs=8,auto 0 0
LABEL=sdd /srv/node/sdd xfs noatime,nodiratime,nobarrier,logbufs=8,auto 0 0
LABEL=sde /srv/node/sde xfs noatime,nodiratime,nobarrier,logbufs=8,auto 0 0
LABEL=sdf /srv/node/sdf xfs noatime,nodiratime,nobarrier,logbufs=8,auto 0 0
LABEL=sdg /srv/node/sdg xfs noatime,nodiratime,nobarrier,logbufs=8,auto 0 0
Create the mount points for the devices 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/rpc_deploy/conf.d/swift.yml
):
# 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
this link.
For the following mounted devices:
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 |
Table: Table 5.1. Mounted devices
The entry in the swift.yml
:
# drives:
# - name: sdc
# - name: sdd
# - name: sde
# - name: sdf
# - name: sdg
# mount_point: /srv/node
Except where otherwise noted, this document is licensed under Creative Commons Attribution 3.0 License. See all OpenStack Legal Documents.