HP 4400 Release Note page 8

Improved on-demand allocation, rebuild, reconstruct, revert, and controller failover routines to
resolve a problem where the controllers can experience a Unit Stalled Too Long condition
and workload timeouts.
Fixed an issue where the controller erroneously logs Metadata Check 1 (0x07140715)
events spontaneously.
HP P6000 Business Copy
This section describes issues affecting HP P6000 Business Copy implementations of local replication,
including snapshots, snapclones, and mirrorclones.
Fixed incorrect event date reporting in the snapclone event data.
Fixed an issue where controller software may not realize unpresented snapshots, snapclones, or
mirrorclones when source virtual disks are in DR groups, leading to a controller termination.
Fixed a work load hang that occurred when creating a large number of snapclones under heavy
load.
HP P6000 Continuous Access
This section describes issues affecting HP P6000 Continuous Access implementations of remote
replication, including data replication (DR) groups.
Fixed issues where a controller could terminate (termination codes 0x020c0100, 0x42350104)
for an invalid group cache operation state because the determination of DR group membership
was based on a snapshot rather than the successor of the snapshot.
Fixed an issue in HP P6000 Continuous Access configurations where the controller software
intermittently fails to correctly identify the active protocol type for EVA3000/5000 peers.
Fixed an issue where controllers can experience a processor exception (0x0402011f) due to
non-zero link fields during HP P6000 Continuous Access site failover.
Fixed an issue which causes a controller to experience a stalled state and execute a CSM Reset
termination (termination code 0x4238011f) to clear the stalled state due to the tunnel state
transitions not calling back the log for failed merge writes.
Fixed an issue where a controller experiences a processor exception termination due to a stack
overflow on remote replication write retries when the SCSI-FCP tunnel is open, but the remote
replication array discovery data is marked invalid.
Added information to events related to invalid group cache operations.
Fixed an issue where resolving a multiple disk failure condition can leave a DR group unusable.
Fixed out of sequence replication requests in HP P6000 Continuous Access configurations.
Added instrumentation to HP P6000 Continuous Access to track instances when a controller
termination (termination code 0x0442011f) occurs due to inter-controller cache inconsistency.
Fixed an issue where HP P6000 Continuous Access recognizes a host as a possible replication
target, resulting in the host port WWN being deleted.
Fixed an unexpected resynchronization that could occur during HP P6000 Continuous Access
log removal or invalidation.
Improved array response to host I/O during HP P6000 Continuous Access copies.
Fixed an issue where DR tunnel closures caused by SCSI exchange timeouts can lead to Unit
Stalled Too Long or CSM Reset termination in an effort to clear the stalled state.
Fixed an issue where the SCSI-FCP data replication protocol aborts exchanges if they do not
complete within a specified timeout period, resulting in a Unit Stalled Too Long controller
termination.
8 Fixes