3PAR InForm Operating System 2.3.1 Release Notes (320-200178 Rev D, May 2010)

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3PAR InForm Operating System Release Notes InForm OS Version 2.3.1
2.8.10 RCFC Port Shutdown Failure (Bug 44520)
A problem exists during the shutdown of RCFC ports when line errors are present on the Fibre
Channel port. It is possible that the port may not shutdown correctly due to the connection
being restarted from the network multiple times due to delayed or duplicated packets being
received.
 Workaround - None.
2.8.11 Failure of setrcopygroup DR Operations does not cause an Alert (Bug
44555)
With InForm OS 2.3.1 the setrcopygroup disaster recovery operations ('failover', 'recover',
'restore', and 'reverse') now create a task for each affected group. The CLI command will
return immediately and without error if the groups are valid for the indicated operation.
However, these tasks can fail at various stages due to conditions on the remote copy systems
and these failures will not generate alerts. Further these commands perform non-reversible
operations and as such are designed to be reissued when the error condition is cleared, the
status of the affected groups may appear to have changed even if the task could not run to
completion.
 Workaround - When performing a disaster recovery operation, the tasks generated by the
setrcopygroup command should be monitored The -waittasks option can be used to
cause the CLI command to display failure if any of its tasks fail.
2.8.12 Remote Copy Volumes go Stale Due to Lack of Adm Space (Bug 44963)
The default grow value of 64 GB might be insufficient for volumes which are in Remote Copy
groups. The reason is Remote Copy relies on taking snapshots during the initial sync phase and
also during the resync periods. The snapshots end up using administrator space depending on
the IOPS and throughput load on the Remote Copy volumes.
 Workaround - Use setcpg -sdgs <increment_value> <volume_name> to increase the
default grow increment. The recommended value is 96 GB.