deb-cinder/kaminario-failback-support-072295f8d13589d3.yaml at 50114a28207efa63a7c603f297a71e2591c95e22 - deb-cinder - OpenDev: Free Software Needs Free Tools

openstack/deb-cinder

VenkataKrishna Reddy 4e92c272eb Add replication failback in Kaminario K2 drivers

Replication failback support is added based on active_backend_id
in Kaminario K2 iSCSI and FC Cinder drivers.
Use "cinder failover-host" command to switch between failover and
failback based on active_backend_id.
If active_backend_id is secondary array, "cinder failover-host"
will trigger failback code.
Below are the steps as part of failback:
1)Search "failed-over" sessions on secondary array.
2)Change state of "failed-over" sessions to "in-sync".
  This will reverse the replication direction from secondary
  to primary.
3)Create external snapshots and synced to primary array volumes
4)Change state of "in-sync" sessions on primary to "failed-over".
5)Change state of "failed-over" sessions to "in-sync".
  This will reverse the replication direction from primary to
  secondary.

Also, updated releasenotes of bug #1608913
DocImpact
Closes-Bug: #1615178
Co-Authored-By: Nikesh Mahalka<Nikesh.Mahalka.ctr@kaminario.com>
Co-Authored-By: Sreedhar Varma<Sreedhar.Varma.ctr@kaminario.com>
Co-Authored-By: Lakshman<Lakshmi.Narayana.ctr@kaminario.com>
Co-Authored-By: Ido Benda<Ido.Benda@kaminario.com>
Change-Id: I664516ab31f9d33e4d14cd8615a1e0da4dba15b6

2016-08-23 00:50:25 -04:00

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Raw Blame History

 ---
 fixes:
   - Added missing replication failback support in Kaminario iSCSI and
     FC Cinder drivers.