How does SMB status check work?

[mapled]

Hi,

thank you for this great project.

Is there a possibility within the smb check to look for "locked files" (i.e. listed via smbstatus)?
Reason is, that there are a lot idle connetions via smb, but there is no activity and the file server stays online without any need.

Thank you!
Cheers
Philipp

[languitar]

Hi, this is not supported at the moment. How can one list locked files with smbstatus? For a quick solution, you could use that to build a script for the ExternalCommand check.

[languitar]

Btw, you would then need a solution that wakes the system once a client needs a file again. I am not sure if you will get that working in a reliable fashion.

[mapled]

Hi @languitar, thank you for your quick reply. As you mentioned, I went through the code and have seen two possibilities as well:

• adding some options to the smb.py section,
• adding a script for the ExternalCommand check.
  I think both isn't a complex task, but I am not that skilled writing phython scripts/code. But maybe I will find the time to get into it.

Btw, you would then need a solution that wakes the system once a client needs a file again. I am not sure if you will get that working in a reliable fashion.

My setup is as follows (used to use powernap deamon before upgrading to 22.04.): I have a Ubuntu server running different services, one is sharing files via smb. The server usually sleeps and only wakes up on demand (wol package). So if I need a service I "manually" send a WOL package. Manually means the server only wakes up on WOL rather than a specific port/service request. For example kodi sends a WOL package on start up.
The server should run as long as it is used. Usually the SMB sessions lasts much longer so the server stays on.

I will try to dive deeper into python scripting, when I find the time. If I have a solution I will post it here or share the code.

[languitar]

For the external command check there's no need to write python. The script can be bash or anything else that properly sets the exit code. So if you know how to detect locked files on the shell then wrapping a script around that is easy.