This is to inform you a scheduled outage (11.00 AM Mon 29/06/2015 - 12.00 PM Mon 29/06/2015) of Volume services in SA availability zone.
This outage is required to upgrade our Cinder volume services to Juno. We need to upgrade the underlying server from Ubuntu Precise to Trusty to install the Juno packages of cinder-volume, and a reboot of the server is required. So your volumes in SA, especially those have already been attached to and mounted in an instance, will be affected during the outage window. During the outage, volumes service in SA will not be available.
To avoid (I/O)errors of your applications reading or writing volumes, it is recommended that you umount your volumes before the outage, and then re-mount your volumes after the outage. For those volumes mounted as vda for root partition, you need to shutoff your instance before the outage and start/reboot your instance after the outage.