NetBackup VMware SAN mode backup fails due to 'Detected DiskLib error'. This issue may occur with restores also.

Problem

NetBackup VMware SAN mode backup fails due to Detected DiskLib error. This issue may occur with restores also.

Error Message

Job Details:

04/24/2018 14:41:53 - begin writing
04/24/2018 14:42:18 - Critical bpbrm (pid=5019) from client als06win: FTL - cleanup() failed, status 6
04/24/2018 14:42:20 - Error bptm (pid=5025) media manager terminated by parent process
04/24/2018 14:42:25 - Critical bpbrm (pid=5019) unexpected termination of client ABCXYZ

VxMS Provider Log:

04/24/2018 18:21:35 : g_vixInterfaceLogger:libvix.cpp:1797 <DEBUG> : [VFM_ESINFO] 2018-04-24T18:21:35.075+02:00 error -[7FD31B822720] [Originator@6876 sub=Default] San transport error: I/O Operation failed.
  04/24/2018 18:21:35 : g_vixInterfaceLogger:libvix.cpp:1797 <DEBUG> : [VFM_ESINFO] DISKLIB-LIB  : RWv failed ioId: #1 (4096062) (62) .
  04/24/2018 18:21:35 : g_vixInterfaceLogger:libvix.cpp:1797 <DEBUG> : [VFM_ESINFO] VixDiskLib: Detected DiskLib error 4096062 (One of the parameters supplied is invalid).
  04/24/2018 18:21:35 : g_vixInterfaceLogger:libvix.cpp:1797 <DEBUG> : [VFM_ESINFO] VixDiskLib: VixDiskLib_Read: Read 1 sectors at 0 failed. Error 16000 (One of the parameters supplied is invalid) (DiskLib error 4096062: One of the parameters supplied is invalid) at 4887.

Cause

The Datastore where the VM resides is expanded in size.

Solution

1. A reboot of the NetBackup VMware Backup Host will be needed.
2. Re-scan the LUNs presented to the NetBackup on the backup host.
   • Note: Please follow OS Vendor Specific directions.

The same error messages in the VxMS provider log could also be seen for VMware restores using SAN transport mode.

The same solution applies to restore.

NBD transport mode can be used as a workaround for both backup and restore.