Virtualization software limitations

• Paths cannot be enabled inside a KVM guest if the devices have been previously removed and re-attached from the host

• Application component fails to come online [3489464]

Storage Foundation software limitations

• Dynamic Multi-Pathing software limitations

  • DMP settings for NetApp storage attached environment

  • LVM volume group in unusable state if last path is excluded from DMP (1976620) ZFS pool in unusable state if last path is excluded from DMP (1976620)

• InfoScale Volume Manager software limitations

  • Snapshot configuration with volumes in shared disk groups and private disk groups is not supported (2801037)

  • SmartSync is not supported for Oracle databases running on raw VxVM volumes

  • Arctera InfoScale does not support thin reclamation of space on a linked mirror volume (2729563)

  • Cloned disks operations not supported for FSS disk groups

  • Thin reclamation requests are not redirected even when the ioship policy is enabled (2755982)

• File System (VxFS) software limitations

  • Limitations while managing Docker containers

  • Linux I/O Scheduler for Database Workloads

  • Recommended limit of number of files in a directory

  • The vxlist command cannot correctly display numbers greater than or equal to 1 EB

  • Limitations with delayed allocation for extending writes feature

  • Compressed files that are backed up using NetBackup 7.1 or prior become uncompressed when you restore the files

  • On SUSE, creation of a SmartIO cache of VxFS type hangs on Fusion-io device (3200586)

  • A NetBackup restore operation on VxFS file systems does not work with SmartIO writeback caching

  • VxFS file system writeback operation is not supported with volume level replication or array level replication

• SmartIO software limitations

  • Cache is not online after a reboot

  • Writeback caching limitations

  • The sfcache operations may display error messages in the caching log when the operation completed successfully (3611158)

Replication software limitations

• Bunker replication configuration limitations

• VVR support for replicating across InfoScale Storage versions

• Softlink access and modification times are not replicated on RHEL5 for VFR jobs

• VVR Replication in a shared environment

• VVR IPv6 software limitations

Cluster Server software limitations

• Limitations related to bundled agents

  • GoogleIP service group comes online even though OverlayIP resource is already online outside the cluster

  • Programs using networked services may stop responding if the host is disconnected

  • Volume agent clean may forcibly stop volume resources

  • False concurrency violation when using PidFiles to monitor application resources

  • Share agent limitations

  • Volumes in a disk group start automatically irrespective of the value of the StartVolumes attribute in VCS [2162929]

  • Application agent limitations

  • Campus cluster fire drill does not work when DSM sites are used to mark site boundaries [3073907]

  • Mount agent reports resource state as OFFLINE if the configured mount point does not exist [3435266]

  • Limitation of VMwareDisks agent to communicate with the vCenter Server [3528649]

  • NFSRestart agent - In NFSv3, lock recovery is not supported with multiple NFS share service groups

• Limitations related to VCS engine

  • Loads fail to consolidate and optimize when multiple groups fault [3074299]

  • Preferred fencing ignores the forecasted available capacity [3077242]

  • Failover occurs within the SystemZone or site when BiggestAvailable policy is set [3083757]

  • Load for Priority groups is ignored in groups with BiggestAvailable and Priority in the same group[3074314]

• Limitations related to the VCS database agents

  • DB2 RestartLimit value [1234959]

  • Sybase agent does not perform qrmutil based checks if Quorum_dev is not set (2724848)

  • Pluggable database (PDB) online may timeout when started after container database (CDB) [3549506]

• Security-Enhanced Linux is not supported on SLES distributions

• Systems in a cluster must have same system locale setting

• VxVM site for the disk group remains detached after node reboot in campus clusters with fire drill [1919317]

• Limitations with DiskGroupSnap agent [1919329]

• System reboot after panic

• Host on RHEV-M and actual host must match [2827219]

• Cluster Manager (Java console) limitations

  • Using the KDE desktop

• Limitations related to LLT

  • Limitation related to LLT on RHEL [3983163]

  • Limitation of LLT support over UDP or RDMA using alias IP [3622175]

• Limitations related to I/O fencing

  • Preferred fencing limitation when VxFEN activates RACER node re-election

  • Stopping systems in clusters with I/O fencing configured

  • Uninstalling VRTSvxvm causes issues when VxFEN is configured in SCSI3 mode with dmp disk policy (2522069)

  • Node may panic if HAD process is stopped by force and then node is shut down or restarted [3640007]

• Limitations related to global clusters

• Clusters must run on VCS 6.0.5 and later to be able to communicate after upgrading to 2048 bit key and SHA256 signature certificates [3812313]

Storage Foundation Cluster File System High Availability software limitations

• cfsmntadm command does not verify the mount options (2078634)

• Obtaining information about mounted file system states (1764098)

• Stale SCSI-3 PR keys remain on disk after stopping the cluster and deporting the disk group

• Unsupported FSS scenarios

Storage Foundation for Oracle RAC software limitations

• Supportability constraints for normal or high redundancy ASM disk groups with CVM I/O shipping and FSS (3600155)

• Limitations of CSSD agent

• Oracle Clusterware/Grid Infrastructure installation fails if the cluster name exceeds 14 characters

• Policy-managed databases not supported by CRSResource agent

• Health checks may fail on clusters that have more than 10 nodes

• Cached ODM not supported in Arctera InfoScale environments

Storage Foundation for Databases (SFDB) tools software limitations

• Parallel execution of vxsfadm is not supported (2515442)

• Creating point-in-time copies during database structural changes is not supported (2496178)

• Oracle Data Guard in an Oracle RAC environment