Avra,
I understand its not planned for Everglades :)
Also we are planning to provide mounting of meta volume on the nodes of
the cluster from Console as part of volume syncing and addition of new
nodes to the cluster. Looks like if this option is set, the explicit
mounting of the meta volume from console is not required and it would be
taken care by gluster.
Currently we show explicit warning during stop/remove-brick of the meta
volume in console and allow the operations. I dont feel there would be
any impact due to new feature.
Kindly let us know if any other impact on console or we need to take
care of anything else as result of this feature.
Thanks and Regards,
Shubhendu
On 05/15/2015 07:30 PM, Avra Sengupta wrote:
Hi,
A shared storage meta-volume is currently being used by
snapshot-scheduler, geo-replication, and nfs-ganesha. In order to
simplify the creation and set-up of the same, we are introducing a
global volume set option(cluster.enable-shared-storage).
On enabling this option, the system analyzes the number of peers in
the cluster, which are currently connected, and chooses three such
peers(including the node the command is issued from). From these peers
a volume(gluster_shared_storage) is created. Depending on the number
of peers available the volume is either a replica 3 volume(if there
are 3 connected peers), a replica 2 volume(if there are 2 connected
peers), or a single brick volume(if there is only one node in the
cluster). "/var/run/gluster/ss_brick" serves as the brick path on each
node for the shared storage volume. We also mount the shared storage
at "/var/run/gluster/shared_storage" on all the nodes in the cluster
as part of enabling this option.
Once the volume is created, and mounted the maintainance of the volume
like adding-bricks, removing bricks etc., is expected to be the onus
of the user.
On disabling the option, we provide the user a warning, and on
affirmation from the user we stop the shared storage volume, and
unmount it from all the nodes in the cluster.
These are achieved with hook-scripts as part of the volume set option.
If anyone is interested in having a look at the patch, it's available
for review at http://review.gluster.org/#/c/10793/ . If there is any
feedback and suggestion regarding the same, please feel free to share it.
Regards,
Avra
_______________________________________________
Gluster-devel mailing list
Gluster-devel@xxxxxxxxxxx
http://www.gluster.org/mailman/listinfo/gluster-devel
_______________________________________________
Gluster-devel mailing list
Gluster-devel@xxxxxxxxxxx
http://www.gluster.org/mailman/listinfo/gluster-devel
