Bulk Checkpointing

Bulk checkpointing causes the primary and backup run-time states to be synchronized. Since ExtremeXOS runs a series of applications, an application starts checkpointing only after all of the applications it depends on have transferred their run-time states to the backup MSM/MM node.

After one application completes bulk checkpointing, the next application proceeds with its bulk checkpointing.

To monitor the checkpointing status, use the show checkpoint-data {process} command.
To see if bulk checkpointing is complete (that is, to see if the backup node is fully synchronized [in sync] with the primary node), use the show switch {detail} command.

If a failover occurs before bulk checkpointing is complete, the switch or SummitStack reboots. However, once bulk checkpointing is complete, failover is possible without a switch or SummitStack reboot.

Published March 2020prev | next

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