When the backup gets started, its started writing some data, but when it is trying to take backup of those two mount points, its not able to process and getting hung, after that it fails with file read error(NBU error code 13). So the issue is with these two mount points only.
The bpbkar process read the files and folder need to be backup.
Run the bpbkar null test against that two mount point.
# /usr/openv/netbackup/bin/bpbkar -nocont -nokeepalives /mount1 > /dev/null 2> /tmp/file1.out
# /usr/openv/netbackup/bin/bpbkar -nocont -nokeepalives /mount2 > /dev/null 2> /tmp/file2.out
Make sure that enable bpbkar logs on client server with verbose 5 and you have created the bpbkar debug directory in /usr/openv/netbackup/logs/ before start the bpbkar null test...
Can you tell us more about the problem with the 2 mount points?
What type of data on the 2 mount points?
Is there a permission problem or just getting hung during the backup?
What is NBU version on server(s) and client?
What is OS on the client?
Please show us all text in Details tab of failed job.
I would like to see bpbkar log with level 3 (level 5 logs simply get too big to upload and most problems can be traced with lower logging level).
Please copy the log file to bpbkar.txt and upload as attachment.