intermittent CIFS access issue

[Bruce ISG]

Hi guys,

I am using freeNAS as a CIFS share storage for my Acronis backup. basically the backup server build a central vault on top of a CIFS share.

However, I found out during backup, backup VM lost cifs connection to freenas intermittently (at that time, I could not access the share from the backup server, but the access will restore in a few seconds for example 10s).

Does anyone share the same issue as me, could you please help with some suggestion fixing this issue?

My freenas is a pretty strong iXsystems with 32G memory, intel Xeon cpu E5-2609. Currently running 9.3. (upgraded to newer version before, failed with CIFS more often, so rolled back).

Will appreciate any help.

 

[dlavigne]

Anything in /var/log/messages when it loses the connection?

 

[Bruce ISG]

Thank you dlavigne for looking into this.

There are a lot messages like below, looks at that moment, CIFS do not know the domain any more (still could ping)



"Feb 5 15:06:27 smbd[41901]: STATUS=daemon 'smbd' finished starting up and ready to serve connections10.32.4.74 (ipv4:10.32.
4.74:54528) closed connection to service WinFileShare
Feb 5 15:08:22 smbd[42140]: STATUS=daemon 'smbd' finished starting up and ready to serve connections10.32.4.74 (ipv4:10.32.
4.74:54602) closed connection to service WinFileShare
Feb 5 15:12:59 smbd[42197]: STATUS=daemon 'smbd' finished starting up and ready to serve connections10.32.4.74 (ipv4:10.32.
4.74:54677) closed connection to service WinFileShare
Feb 5 15:17:46 smbd[42423]: STATUS=daemon 'smbd' finished starting up and ready to serve connections10.32.4.74 (ipv4:10.32.
4.74:54732) closed connection to service WinFileShare
Feb 5 15:26:26 smbd[42612]: STATUS=daemon 'smbd' finished starting up and ready to serve connections10.32.4.74 (ipv4:10.32.
4.74:54743) closed connection to service WinFileShare

Feb 5 15:44:04 smbd[81448]: STATUS=daemon 'smbd' finished starting up and ready to serve connectionssmb_pam_account: PAM: User "localdomain\username" is NOT known to account management
"

Anything in /var/log/messages when it loses the connection?

 

[dlavigne]

Is there a properly ocnfigured DNS server in the network? If not, does Network -> Global Configuration -> Host name database have an entry for the backup system and does that system have a lmhosts entry for the FreeNAS system?

 

[anodos]

Thank you dlavigne for looking into this.

There are a lot messages like below, looks at that moment, CIFS do not know the domain any more (still could ping)



"Feb 5 15:06:27 smbd[41901]: STATUS=daemon 'smbd' finished starting up and ready to serve connections10.32.4.74 (ipv4:10.32.
4.74:54528) closed connection to service WinFileShare
Feb 5 15:08:22 smbd[42140]: STATUS=daemon 'smbd' finished starting up and ready to serve connections10.32.4.74 (ipv4:10.32.
4.74:54602) closed connection to service WinFileShare
Feb 5 15:12:59 smbd[42197]: STATUS=daemon 'smbd' finished starting up and ready to serve connections10.32.4.74 (ipv4:10.32.
4.74:54677) closed connection to service WinFileShare
Feb 5 15:17:46 smbd[42423]: STATUS=daemon 'smbd' finished starting up and ready to serve connections10.32.4.74 (ipv4:10.32.
4.74:54732) closed connection to service WinFileShare
Feb 5 15:26:26 smbd[42612]: STATUS=daemon 'smbd' finished starting up and ready to serve connections10.32.4.74 (ipv4:10.32.
4.74:54743) closed connection to service WinFileShare

Feb 5 15:44:04 smbd[81448]: STATUS=daemon 'smbd' finished starting up and ready to serve connectionssmb_pam_account: PAM: User "localdomain\username" is NOT known to account management
"

This looks like Acronis is trying to pass along a default username \ password combination. Can you post a debug file? "System" -> "advanced" -> "save debug". Note this contains some sensitive information. I'm mostly concerned with the CIFS dump. If you extract the tarball, post the contents of ixdiagnose\fndebug\CIFS\dump.txt. Enclose it in [ CODE ] tags or attach to the thread.