Hi,
I did:
pg_probackup-9.6 backup -B /mnt/probackup/ --instance 'myPGhost' -b FULL --remote-host=192.168.1.1 --remote-user=postgres -U backup -d backupdb --progress -j 2

and the last line in the log file is:
2020-05-08 03:36:44 UTC: INFO: Progress: (1156427/1156427). Process file "base/16384/44722834"
So looks like it processed 100% of files.

but now is: 14:45, so it's been about 11 hours since no any new message has arrived.

on Postgres database server (myPGhost) no agent is running, but I see some CPU is consumed on Archive server

lsof -p 23877 (PID of running pg_probackup-9.6) shows
`
pg_probac 23877 postgres 3w REG 253,0 147397277 71471 /var/lib/pgsql/pg_probackup_log/myPGhost_2020-18.log

pg_probac 23877 postgres 4u IPv4 30953866 0t0 TCP archiveHost:36042->myPGhost:postgres (ESTABLISHED)

pg_probac 23877 postgres 5w REG 0,42 56614912 4348538889 /mnt/probackup/backups/myPGhost/Q9Z335/backup_content.control.tmp (172.2.1.1:/opt/backup_vol1/DB_Backups/probackup)

pg_probac 23877 postgres 9r FIFO 0,9 0t0 30953869 pipe

pg_probac 23877 postgres 10r FIFO 0,9 0t0 30957855 pipe
`

I see this file is modified all the time:
stat /mnt/probackup/backups/myPGhost/Q9Z335/backup_content.control.tmp
File: ‘/mnt/probackup/backups/myPGhost/Q9Z335/backup_content.control.tmp’
Size: 218171568 Blocks: 788480 IO Block: 1048576 regular file
Device: 2ah/42d Inode: 4348538889 Links: 1
Access: (0644/-rw-r--r--) Uid: ( 26/postgres) Gid: ( 26/postgres)
Context: system_u:object_r:nfs_t:s0
Access: 2020-05-08 14:53:14.654392149 +0000
Modify: 2020-05-08 14:53:18.917391941 +0000
Change: 2020-05-08 14:53:18.917391941 +0000
Birth: -

Should I still wait?