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CIFS access via file browser hang

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nas
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Applies to

  • ONTAP 9
  • CIFS/SMB

Issue

  • CIFS shares can be mapped/navigated to without a problem
  • Accessing files within the share causes a hang
  • Packet traces captured during the hang show retransmissions on a specific call, such as retransmissions of the DCERPC bind call in the following example excerpt :
539 2022-04-26 10:37:57.504281 0.000151 cifs_client_ip 49995 cifs_server_ip 445 108 SMB2 GetInfo Request FILE_INFO/SMB2_FILE_STANDARD_INFO File: srvsvc
540 2022-04-26 10:37:57.506282 0.002001 cifs_server_ip 445 cifs_client_ip 49995 100 SMB2 GetInfo Response
541 2022-04-26 10:37:57.508952 0.002670 cifs_client_ip 49995 cifs_server_ip 445 276 DCERPC Bind: call_id: 2, Fragment: Single, 3 context items: SRVSVC V3.0 (32bit NDR), SRVSVC V3.0 (64bit NDR), SRVSVC V3.0 (6cb71c2c-9812-4540-0300-000000000000)
564 2022-04-26 10:37:57.917152 0.031280 cifs_client_ip 49995 cifs_server_ip 445 276 TCP [TCP Retransmission] 49995 → 445 [PSH, ACK] Seq=1958415493 Ack=1995492458 Win=261376 Len=276
572 2022-04-26 10:37:58.904561 0.017763 cifs_client_ip 49995 cifs_server_ip 445 276 TCP [TCP Retransmission] 49995 → 445 [PSH, ACK] Seq=1958415493 Ack=1995492458 Win=261376 Len=276
579 2022-04-26 10:38:00.874270 0.120681 cifs_client_ip 49995 cifs_server_ip 445 276 TCP [TCP Retransmission] 49995 → 445 [PSH, ACK] Seq=1958415493 Ack=1995492458 Win=261376 Len=276
593 2022-04-26 10:38:04.814194 0.174235 cifs_client_ip 49995 cifs_server_ip 445 276 TCP [TCP Retransmission] 49995 → 445 [PSH, ACK] Seq=1958415493 Ack=1995492458 Win=261376 Len=276
630 2022-04-26 10:38:08.753830 0.112953 cifs_client_ip 49995 cifs_server_ip 445 276 TCP [TCP Retransmission] 49995 → 445 [PSH, ACK] Seq=1958415493 Ack=1995492458 Win=261376 Len=276
663 2022-04-26 10:38:12.687586 1.001065 cifs_client_ip 49995 cifs_server_ip 445 276 TCP [TCP Retransmission] 49995 → 445 [PSH, ACK] Seq=1958415493 Ack=1995492458 Win=261376 Len=276
707 2022-04-26 10:38:20.557341 0.841788 cifs_client_ip 49995 cifs_server_ip 445 276 TCP [TCP Retransmission] 49995 → 445 [PSH, ACK] Seq=1958415493 Ack=1995492458 Win=261376 Len=276
  • Windows client may report the following error message:
    • The program cannot open the required dialog box because it cannot determine whether the computer named "host's FQDN" is joined to a domain. Close this message. and try again.

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