Re: [ovirt-users] two node replicated gluster
On 09/25/2014 07:44 PM, ml ml wrote:
Hello List,
i have a Two Node replicated Gluster.
I am running about 15 vm on each host so that in case one node fails
the other one can take over.
My question is how the GlusterFS self-healing-daemon works.
I disconnected the two nodes on purpose and reconnected them again. So
that the self-heal-daemon jumps it.
It looks like it would transfer all the file. Does the
self-heal-deamon of glusterfs not just copy the missing increments?
self-heal daemon just syncs regions of files that need to be updated and
the process of identification of regions to be updated involves
comparison of a rolling checksum of various regions in the files. You
can find more details about Gluster's replication and the self-healing
algorithm in the "Recovering from failures (Self-heal)" section of this
document [1].
-Vijay
[1] https://github.com/gluster/glusterfs/blob/master/doc/features/afr-v1.md