Urbackupsrv crashes, environ, maps, Ubuntu 20.04

Hi everyone,
urbackupsrv crashes. It usually happens, when i setup a windows 7 client on a subnet (internet backup). On the client, i can ping the server fine. The client status in client app shows connected to server, but in the web interface, that computer never shows ON. After a few minutes the server crashes. To have the client on different subnet, i put a router between the server and client (for testing subnet clients before installing in production). The same client computer and server when on same subnet (without router) work fine. Ports on router forwarded (app shows connected to server). Changing [
libcrypto++6 library to different version did not help.

Any ideas why server crashes and what to check next? Help appreciated.

$ lsb_release -a
Ubuntu 20.04.2 LTS, running as Virtual server on ProxMox.

$ service urbackupsrv status

urbackupsrv.service - LSB: Server for doing backups
Loaded: loaded (/etc/init.d/urbackupsrv; generated)
Active: active (exited) since Thu 2021-02-18 15:18:07 UTC; 8min ago
Docs: man:systemd-sysv-generator(8)
Process: 1822 ExecStart=/etc/init.d/urbackupsrv start (code=exited, status=0/SUCCESS)

$ cat /var/crash/_usr_bin_urbackupsrv.0.crash
/var/crash/_usr_bin_urbackupsrv.0.crash

ProblemType: Crash
Architecture: amd64
Date: Thu Feb 18 15:22:11 2021
DistroRelease: Ubuntu 20.04
ExecutablePath: /usr/bin/urbackupsrv
ExecutableTimestamp: 1353348780
ProcCmdline: /usr/bin/urbackupsrv run --config /etc/default/urbackupsrv --daemon --pidfile /var/run/urbackupsrv.pid
ProcEnviron: Error: [Errno 13] Permission denied: ‘environ’
ProcMaps: Error: [Errno 13] Permission denied: ‘maps’
ProcStatus:
Name: urbackupsrv
Umask: 0022
State: D (disk sleep)
Tgid: 1830
Ngid: 0

$ tail /var/log/urbackup.log
2021-02-18 15:22:11: InternetService: No available slots… starting new Worker

I just tested a server with Debian 10 Buster and it works like charm, so i am switching from Ubuntu to Debian. I have been planning this since 18.04 and now the time has come.

1 Like

Too many problems related to kernel 5.x. Debian 10 is the last os running 4.19 LTS until 2024.