SYSlog Level + Silent hung

[xmousimousi]

I do have one weird issue at my FreeNAS which it will sudden hung at no reason (at least i'm unable to find any log corresponding to it).
Thus, i'm logging the syslog to remote side. But i find it is only able to choose one level.

How can i select multiple level which EMER , ALERT , Critical , ERROR to send over?

Thanks.

 

[Ericloewe]

Lower levels include higher ones. I can't imagine anyone would want to receive low-priority messages but not critical events.

 

[xmousimousi]

Okay. Is that mean if i choose Emergency all level will be included or another way round?

 

[xmousimousi]

By the way, i sorted out the syslog level.
As i choose Info Level at the times that it should appear somethings interested if the FN stop responding.

When the issues happen, the Freenas GUI / NFS / SMB all services break.
But the syslog is still continue, and there is no abnormality at the syslog.

What else i can look into for this to find out why the system freeze in that way.