Switch Backup Target on Kolla-ansible

Unmount old mount point

The first step is to remove the datamover container and to unmount the old mounts. This is necessary to make sure, that the new datamover container with the new backend target is not getting any interference from the old backup target.

#check current mount point
[root@compute ~]# df -h
Filesystem                      Size  Used Avail Use% Mounted on
devtmpfs                        7.8G     0  7.8G   0% /dev
tmpfs                           7.8G     0  7.8G   0% /dev/shm
tmpfs                           7.8G   26M  7.8G   1% /run
tmpfs                           7.8G     0  7.8G   0% /sys/fs/cgroup
/dev/mapper/cl-root             280G   12G  269G   5% /
/dev/sda1                       976M  197M  713M  22% /boot
192.168.1.34:/mnt/tvault/42436  2.5T 1005G  1.5T  41% /var/trilio/triliovault-mounts/MTkyLjE2OC4xLjM0Oi9tbnQvdHZhdWx0LzQyNDM2

#Stop triliovault_datamover
[root@compute ~]# docker stop triliovault_datamover
triliovault_datamover
[root@compute ~]#

#Delete triliovault_datamover
[root@compute ~]# docker rm triliovault_datamover
triliovault_datamover
[root@compute ~]#

#unmount mount point
[root@compute ~]# umount /var/trilio/triliovault-mounts/MTkyLjE2OC4xLjM0Oi9tbnQvdHZhdWx0LzQyNDM2

#check mount point is unmounted successfully 
[root@compute ~]# df -h
Filesystem           Size  Used Avail Use% Mounted on
devtmpfs             7.8G     0  7.8G   0% /dev
tmpfs                7.8G     0  7.8G   0% /dev/shm
tmpfs                7.8G   26M  7.8G   1% /run
tmpfs                7.8G     0  7.8G   0% /sys/fs/cgroup
/dev/mapper/cl-root  280G   12G  269G   5% /
/dev/sda1            976M  197M  713M  22% /boot
[root@compute ~]#

#Delete mounted dir from compute node
[root@compute trilio]# rm -rf /var/trilio/triliovault-mounts/MTkyLjE2OC4xLjM0Oi9tbnQvdHZhdWx0LzQyNDM2

Update globals.yml

Edit the globals.yml file to contain the new backup target.

Follow the installation documentation to learn about the globals.yml Trilio variables.

Deploy Trilio components with new backup target

root@controller:~# kolla-ansible -i multinode deploy

Verify the successful change in backup target

##Check that all Containers are up and running
#Controller node
root@controller:~# docker ps -a | grep trilio
583b8d42ab42        trilio/ubuntu-binary-trilio-datamover-api:4.1.36-ussuri    "dumb-init --single-…"   3 days ago          Up 3 days                               openstack-nova-api-triliodata-plugin
3be25d3819ac        trilio/ubuntu-binary-trilio-horizon-plugin:4.1.36-ussuri   "dumb-init --single-…"   4 days ago          Up 4 days                               horizon

#Compute node
root@compute:~# docker ps -a | grep trilio
bf52face23fb        trilio/ubuntu-binary-trilio-datamover:4.1.36-ussuri    "dumb-init --single-…"   3 days ago          Up 3 days                               trilio-datamover

## Verify the backup target has been changed successfully
# In case of switch to NFS
[root@compute ~]# df -h
Filesystem                      Size  Used Avail Use% Mounted on
devtmpfs                        7.8G     0  7.8G   0% /dev
tmpfs                           7.8G     0  7.8G   0% /dev/shm
tmpfs                           7.8G   26M  7.8G   1% /run
tmpfs                           7.8G     0  7.8G   0% /sys/fs/cgroup
/dev/mapper/cl-root             280G   12G  269G   5% /
/dev/sda1                       976M  197M  713M  22% /boot
192.168.1.34:/mnt/tvault/42436  2.5T 1005G  1.5T  41% /var/trilio/triliovault-mounts/MTkyLjE2OC4xLjM0Oi9tbnQvdHZhdWx0LzQyNDM2

#In case of switch to S3
[root@compute ~]# df -h
Filesystem           Size  Used Avail Use% Mounted on
devtmpfs             7.8G     0  7.8G   0% /dev
tmpfs                7.8G     0  7.8G   0% /dev/shm
tmpfs                7.8G   34M  7.8G   1% /run
tmpfs                7.8G     0  7.8G   0% /sys/fs/cgroup
/dev/mapper/cl-root  280G   12G  269G   5% /
/dev/sda1            976M  197M  713M  22% /boot
Trilio             -     -  0.0K    - /var/trilio/triliovault-mounts

##Reverify in the triliovault_datamover containers
[root@compute ~]# docker exec -it triliovault_datamover bash
(triliovault-datamover)[nova@compute /]$ df -h
Filesystem           Size  Used Avail Use% Mounted on
overlay              280G   12G  269G   5% /
tmpfs                7.8G     0  7.8G   0% /sys/fs/cgroup
devtmpfs             7.8G     0  7.8G   0% /dev
tmpfs                7.8G     0  7.8G   0% /dev/shm
/dev/mapper/cl-root  280G   12G  269G   5% /etc/iscsi
tmpfs                6.3G     0  6.3G   0% /var/triliovault/tmpfs
Trilio             -     -  0.0K    - /var/trilio/triliovault-mounts

Reconfigure the Trilio Appliance

Follow the documentation to reconfigure the Trilio appliance with the new backup target.