problem

The script:
Issue 1)
nohup cloudstack-sysvmadm -d 10.23.123.55 -u cloud -p Loc@ll1tyPassW0rd -r > sysvm.log 2>&1 &

Works but stops after the first 10, and Stays running on your Management server forever, after 2 Hours no more VRs are updated, just the first 10, or any number after the value of t.

I verified using the UI only the first 10 number of vrouters were Updated, and stops there for 1 hour and 30 minutes and decided to do it manually.

sysvm.log output
nohup: ignoring input
mysql: [Warning] Using a password on the command line interface can be insecure.
mysql: [Warning] Using a password on the command line interface can be insecure.

Stopping and starting 7XX running routing vm(s)...

Issue 2)
Once the script is hung I have to kill each process manually. I Did try Linux commands other than kill -9 does not work. And I cant kill the "bash" processes with killall as We am running shell scripts.

versions

Upgrade to CS 4.20.0

The steps to reproduce the bug

1. follow the official https://docs.cloudstack.apache.org/en/4.20.2.0/upgrading/upgrade/upgrade-4.20.html OR the Mop Upgrade to 4.22.0 - MOP For the Community: Ubuntu Upgrade Steps from 4.20.1 to 4.22.0 #12054
2. on Updating the Virtual routers part or on Step 7 Option 2 of the MOP
3. cloudstack-sysvmadm the logs indicates Stopping and starting 7XX running routing vm(s)...
4. Script cloudstack-sysvmadm Hungs for hours after executing the firts 10 or number after the t option.

What to do about it?

Script Should not Hung, should keep going over the next virtual routers after the first 10. or any number configured with the option "t"