|Article Number: 480610||Article Version: 3||Article Type: Break Fix|
RecoverPoint,RecoverPoint SE,RecoverPoint Adaptor for VMware Site Recovery Manager,XtremIO
When XtremIO replica copy configured with ‘Number of Desired Snapshots: 2’, customer is unable to create new snapshots while in Test a Copy mode (or Image Access mode) and SRM fail-over operation also fails.
Symptoms found in the logs:
2016/03/10 16:45:41.866 – #1 – 8747/8560 – XioSnapConsolidation::findBestSnapToDelete: didn’t find user snap to delete …
2016/03/10 16:45:41.866 – #2 – 8747/8560 – XioDistributorHandler::checkSnapDelete: going to delete the latest snapshot!
When maximal number of snapshots is 2 the following will happen:
– After the second snapshot is created there are 2 snapshots in snapshot list.
– When the system try to create the 3rd snapshot – it can’t, so snapshot creation is delayed and internal variable indicating number of reserved snapshots is set to 1.
– The system then delete one snapshot and only then will try to create the new one.
– If the pipe is closed before the system handle the delayed request, number of reserved snapshots will remain 1.
From that moment on the system can only hold 1 snapshot at any given moment. So every time a new snapshot is created the previous is deleted.