[ClusterLabs] Question on sharing data with DRDB
Valentin.Vidic at CARNet.hr
Wed Mar 20 13:50:02 EDT 2019
On Wed, Mar 20, 2019 at 01:44:06PM -0400, Digimer wrote:
> GFS2 notified the peers of disk changes, and DRBD handles actually
> copying to changes to the peer.
> Think of DRBD, in this context, as being mdadm RAID, like how writing to
> /dev/md0 is handled behind the scenes to write to both /dev/sda3 +
> /dev/sdb3. DRBD is like the same, any writes to /dev/drbd0 is written to
> both node1:/dev/sda3 + node2:/dev/sda3.
> So DRBD handles replication, and GFS2 handles coordination.
Yes, I was thinking more of the GFS2 in the shared storage setup, how
much overhead is there if the cluster nodes all write to different files
like VM images?
More information about the Users