Avamar: VM Image Backups fail with code 10014

>2020-03-23 08:29:40 avvcbimage Info <14698>: submitting pax container change block extents:
>2020-03-23 08:29:40 avvcbimage Error <0000>: [IMG0010] pax_container::beginfile(virtdisk-flat.vmdk) returned problem:32

>2020-03-23 08:29:40 avvcbimage Info <9772>: Starting graceful (staged) termination, openPaxFile returned error (wrap-up stage)
>2020-03-23 08:29:40 avvcbimage Error <0000>: [IMG1003] Backup of [AVAMAR_AVAMAR_AVAMAR_AVAMAR_ AVAMAR-12] AVAMAR01 (347ca96a-ccc7-497a-bded-a66fab5f986f)/AVAMAR01 (347ca96a-ccc7-497a-bded-a66fab5f986f)_2.vmdk failed
>2020-03-23 08:29:40 avvcbimage Info <16041>: VDDK:VixDiskLib: VixDiskLib_Close: Close disk.

>2020-03-23 08:30:27 avvcbimage Info <6033>: Begin STDERR from run-at-end:
curl: (35) error:140770FC:SSL routines:SSL23_GET_SERVER_HELLO:unknown protocol
Use of uninitialized value $availableversion in concatenation (.) or string at /usr/local/avamarclient/etc/scripts/proxymountclient.pl line 284.

After further investigation found the problem with labelnum taken from previous backup that is corrupted and causing the failure:

2020-03-27 10:30:41 avvcbimage Info <11986>: Changed block tracking is engaged for this VM
2020-03-27 10:30:41 avvcbimage Info <11987>: Reference backup is #713 captured on 2020-02-29 23:34:26
2020-03-27 10:30:41 avvcbimage Info <14680>: A reference to a valid prior backup is available so this will be an incremental.

 

• Disable CBT and take a full backup.
• Enable CBT again to validate that incremental backup is also working fine.