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VSCAN server disconnect errors

Hi Experts,

 

We are having CIFS outages on our Filer environment (8.2.X 7-mode). Everything works normal if vcsan is truned off.

I am observing below erros on filer console (this filer AV was configured early, but vscan status is off currently). Like to know what could be the reason for these VCAN server disconnects?

 

PROD_FILER> Thu Dec 20 00:57:51 CST [PROD_FILER:cifs.server.errorMsg:error]: CIFS: Error for server \\AV-SERVER-7009: Error in session setup response STATUS_MORE_PROCESSING_REQUIRED.
Thu Dec 20 00:57:51 CST [PROD_FILER:cifs.server.infoMsg:info]: CIFS: Warning for server \\AV-SERVER-7009: Connection terminated.
Thu Dec 20 00:57:51 CST [PROD_FILER:vscan.server.connectError:error]: CIFS: An attempt to connect to vscan server \\AV-SERVER-7009 failed [0xc0000016].
Thu Dec 20 00:57:51 CST [PROD_FILER:vscan.dropped.connection:warning]: CIFS: Virus scan server \\AV-SERVER-7009 (10.0.20.37) has disconnected from the filer.
Thu Dec 20 00:58:07 CST [PROD_FILER:vscan.server.connecting.successful:info]: CIFS: Vscan server \\AV-SERVER-7009 registered with the filer successfully.
Thu Dec 20 01:00:00 CST [PROD_FILER:kern.uptime.filer:info]: 1:00am up 203 days, 8:44 60 NFS ops, 30141636660 CIFS ops, 0 HTTP ops, 0 FCP ops, 0 iSCSI ops

Thu Dec 20 01:00:01 CST [PROD_FILER:snmp.traphost.resolve.failed:error]: snmp: cannot send traps to 'cbjsvr3033.company.com' because it could not be resolved via DNS. Retries occur hourly.

PROD_FILER> Thu Dec 20 01:03:21 CST [PROD_FILER:cifs.server.errorMsg:error]: CIFS: Error for server \\AV-SERVER-7009: Error in session setup response STATUS_MORE_PROCESSING_REQUIRED.
Thu Dec 20 01:03:21 CST [PROD_FILER:cifs.server.infoMsg:info]: CIFS: Warning for server \\AV-SERVER-7009: Connection terminated.
Thu Dec 20 01:03:21 CST [PROD_FILER:cifs.server.errorMsg:error]: CIFS: Error for server \\AV-SERVER-7009: CIFS Session Setup Error STATUS_MORE_PROCESSING_REQUIRED.
Thu Dec 20 01:03:21 CST [PROD_FILER:vscan.server.connectError:error]: CIFS: An attempt to connect to vscan server \\AV-SERVER-7009 failed [0xc0000016].
Thu Dec 20 01:03:21 CST [PROD_FILER:vscan.dropped.connection:warning]: CIFS: Virus scan server \\AV-SERVER-7009 (10.0.20.37) has disconnected from the filer.
Thu Dec 20 01:03:35 CST [PROD_FILER:vscan.server.connecting.successful:info]: CIFS: Vscan server \\AV-SERVER-7009 registered with the filer successfully.
Thu Dec 20 01:08:51 CST [PROD_FILER:cifs.server.errorMsg:error]: CIFS: Error for server \\AV-SERVER-7009: Error in session setup response STATUS_MORE_PROCESSING_REQUIRED.
Thu Dec 20 01:08:51 CST [PROD_FILER:cifs.server.infoMsg:info]: CIFS: Warning for server \\AV-SERVER-7009: Connection terminated.
Thu Dec 20 01:08:51 CST [PROD_FILER:vscan.server.connectError:error]: CIFS: An attempt to connect to vscan server \\AV-SERVER-7009 failed [0xc0000016].
Thu Dec 20 01:08:51 CST [PROD_FILER:vscan.dropped.connection:warning]: CIFS: Virus scan server \\AV-SERVER-7009 (10.0.20.37) has disconnected from the filer.
Thu Dec 20 01:09:03 CST [PROD_FILER:vscan.server.fqdn.unavail:error]: CIFS: Could not determine Fully Qualified Domain Name (FQDN) of virus vcanning (vscan) server (10.0.20.37). If the vscan server is running on the Microsoft Longhorn OS, the storage system requires vscan server FQDN for authenticating itself to the vscan server.
Thu Dec 20 01:09:03 CST [PROD_FILER:vscan.server.connecting.successful:info]: CIFS: Vscan server \\AV-SERVER-7009 registered with the filer successfully.

PROD_FILER>
PROD_FILER>
PROD_FILER> Thu Dec 20 01:14:21 CST [PROD_FILER:cifs.server.errorMsg:error]: CIFS: Error for server \\AV-SERVER-7009: Error in session setup response STATUS_MORE_PROCESSING_REQUIRED.
Thu Dec 20 01:14:21 CST [PROD_FILER:cifs.server.infoMsg:info]: CIFS: Warning for server \\AV-SERVER-7009: Connection terminated.
Thu Dec 20 01:14:21 CST [PROD_FILER:vscan.server.connectError:error]: CIFS: An attempt to connect to vscan server \\AV-SERVER-7009 failed [0xc0000016].
Thu Dec 20 01:14:21 CST [PROD_FILER:vscan.dropped.connection:warning]: CIFS: Virus scan server \\AV-SERVER-7009 (10.0.20.37) has disconnected from the filer.
Thu Dec 20 01:14:32 CST [PROD_FILER:vscan.server.connecting.successful:info]: CIFS: Vscan server \\AV-SERVER-7009 registered with the filer successfully.

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