When using the RealTime snapshots to backup Solaris client having Storage foundation stack, subsequent backups after snapshot rotation (after crossing Max snapshot value in policy) start failing. Backups start working only after reboot of Solaris host. Backup fails with error 156. Snapshot error encountered.
156 - Snapshot error encountered.
Issue occurs due to stale vxvm assets after deleting Realtime snapshot during snapshot rotation process. This issue is fixed in the 7.0.1 version of NetBackup as a EEB. Please contact Symantec Support for getting EEB for proper version of NetBackup.
Reference: ET2576857 / ET2278822