Hi again, I'm having problems accessing remote DFS links on our DFS root, using mount.cifs. We have a DFS root that has links pointing to a variety of shares on different file servers. >From MS Windows clients and using smbclient the shares are accessible perfectly. Using mount.cifs however I am not able to see the contents of the remote shares. Surprisingly, I get a different error when mounting the DFS root with sec=ntlm, than I get when mounting with sec=ntlmv2. # mount -t cifs //foxdft13.fox.local/company /mnt/bla/ -o credentials=/creds,sec=ntlm # ls -la /mnt/bla/Global/ ls: cannot access /mnt/bla/Global/: Input/output error # mount -t cifs //foxdft13.fox.local/company /mnt/bla/ -o credentials=/creds,sec=ntlmv2 # ls -la /mnt/bla/Global/ ls: cannot access /mnt/bla/Global/: Permission denied Kernel is 2.6.37-rc3. mount.cifs is 4.5. keyutils are installed and working. DFS root is on foxdft13. The "Global" share is on foxdft08. Note that the foxdft08 server is configured to accept NTLMv2 only (not sure if that is relevant when using DFS links), while the DFS root server will allow both NTLM and NTLMv2. pcap's are available on request. Debug log of "ls -la /mnt/bla/Global/", on sec=ntlm: fs/cifs/dir.c: CIFS VFS: in cifs_lookup as Xid: 553 with uid: 0 fs/cifs/dir.c: parent inode = 0xe289a62c name is: Global and dentry = 0xdfe25330 fs/cifs/dir.c: NULL inode in lookup fs/cifs/dir.c: Full path: \\foxdft13.fox.local\company\Global inode = 0x (null) fs/cifs/inode.c: Getting info on \\foxdft13.fox.local\company\Global fs/cifs/transport.c: For smb_command 50 fs/cifs/transport.c: Sending smb: total_len 148 fs/cifs/connect.c: rfc1002 length 0x27 fs/cifs/connect.c: invalid transact2 word count Status code returned 0xc0000257 NT_STATUS_PATH_NOT_COVERED fs/cifs/netmisc.c: Mapping smb error code 3 to POSIX err -66 fs/cifs/cifssmb.c: Send error in QPathInfo = -66 fs/cifs/inode.c: creating fake fattr for DFS referral fs/cifs/cifssmb.c: In GetSrvInodeNum for \\foxdft13.fox.local\company\Global fs/cifs/transport.c: For smb_command 50 fs/cifs/transport.c: Sending smb: total_len 148 fs/cifs/connect.c: rfc1002 length 0x27 fs/cifs/connect.c: invalid transact2 word count Status code returned 0xc0000257 NT_STATUS_PATH_NOT_COVERED fs/cifs/netmisc.c: Mapping smb error code 3 to POSIX err -66 fs/cifs/cifssmb.c: error -66 in QueryInternalInfo fs/cifs/inode.c: GetSrvInodeNum rc -66 CIFS VFS: Autodisabling the use of server inode numbers on \\foxdft13.fox.local\company. This server doesn't seem to support them properly. Hardlinks will not be recognized on this mount. Consider mounting with the "noserverino" option to silence this message. fs/cifs/inode.c: looking for uniqueid=58 fs/cifs/inode.c: cifs_revalidate_cache: revalidating inode 58 fs/cifs/inode.c: cifs_revalidate_cache: inode 58 is new fs/cifs/inode.c: inode 0xc63d492c old_time=0 new_time=30762153 fs/cifs/dir.c: CIFS VFS: leaving cifs_lookup (xid = 553) rc = 0 fs/cifs/cifs_dfs_ref.c: in cifs_dfs_follow_mountpoint fs/cifs/cifs_dfs_ref.c: CIFS VFS: in cifs_dfs_follow_mountpoint as Xid: 554 with uid: 0 fs/cifs/transport.c: For smb_command 117 fs/cifs/transport.c: Sending smb: total_len 88 fs/cifs/connect.c: rfc1002 length 0x3c fs/cifs/connect.c: CIFS Tcon rc = 0 ipc_tid = 14339 fs/cifs/cifssmb.c: In GetDFSRefer the path \foxdft13.fox.local\company\Global fs/cifs/transport.c: For smb_command 50 fs/cifs/transport.c: Sending smb: total_len 144 fs/cifs/connect.c: rfc1002 length 0x124 fs/cifs/cifssmb.c: Decoding GetDFSRefer response BCC: 233 Offset 56 fs/cifs/cifssmb.c: num_referrals: 1 dfs flags: 0x2 ... fs/cifs/cifs_dfs_ref.c: DFS: ref path: \foxdft13.fox.local\company\Global fs/cifs/cifs_dfs_ref.c: DFS: node path: \foxdft08\company\Global fs/cifs/cifs_dfs_ref.c: DFS: fl: 2, srv_type: 0 fs/cifs/cifs_dfs_ref.c: DFS: ref_flags: 0, path_consumed: 34 fs/cifs/dns_resolve.c: dns_resolve_server_name_to_ip: resolved: foxdft08 to 10.0.0.72 fs/cifs/cifsfs.c: Devname: \\foxdft08\company flags: 0 fs/cifs/connect.c: CIFS VFS: in cifs_mount as Xid: 555 with uid: 0 fs/cifs/connect.c: prefix path /Global fs/cifs/connect.c: Username: vmtest fs/cifs/connect.c: UNC: \\foxdft08\company ip: 10.0.0.72 fs/cifs/connect.c: Socket created fs/cifs/connect.c: sndbuf 16384 rcvbuf 87380 rcvtimeo 0x6d6 fs/cifs/connect.c: CIFS VFS: in cifs_get_smb_ses as Xid: 556 with uid: 0 fs/cifs/connect.c: Existing smb sess not found fs/cifs/cifssmb.c: secFlags 0x2 fs/cifs/connect.c: Demultiplex PID: 18750 fs/cifs/transport.c: For smb_command 114 fs/cifs/transport.c: Sending smb: total_len 82 fs/cifs/connect.c: rfc1002 length 0x6b fs/cifs/cifssmb.c: Dialect: 2 fs/cifs/cifssmb.c: Signing disabled fs/cifs/cifssmb.c: negprot rc 0 fs/cifs/connect.c: Security Mode: 0x3 Capabilities: 0xf3fd TimeAdjust: 3600 fs/cifs/sess.c: sess setup type 1 fs/cifs/transport.c: For smb_command 115 fs/cifs/transport.c: Sending smb: total_len 232 fs/cifs/connect.c: rfc1002 length 0x27 fs/cifs/connect.c: Reconnect after unexpected peek error 0 fs/cifs/connect.c: Reconnecting tcp session fs/cifs/connect.c: State: 0x3 Flags: 0x0 fs/cifs/connect.c: Post shutdown state: 0x3 Flags: 0x0 fs/cifs/connect.c: Socket created fs/cifs/netmisc.c: Mapping smb error code 31 to POSIX err -5 fs/cifs/misc.c: Null buffer passed to cifs_small_buf_release fs/cifs/sess.c: ssetup freeing small buf f71edc00 CIFS VFS: Send error in SessSetup = -5 fs/cifs/connect.c: CIFS VFS: leaving cifs_get_smb_ses (xid = 556) rc = -5 fs/cifs/connect.c: CIFS VFS: leaving cifs_mount (xid = 555) rc = -5 CIFS VFS: cifs_mount failed w/return code = -5 fs/cifs/connect.c: sndbuf 16384 rcvbuf 87380 rcvtimeo 0x6d6 fs/cifs/transport.c: Sending smb: total_len 72 fs/cifs/cifs_dfs_ref.c: cifs_dfs_follow_mountpoint: cifs_dfs_do_refmount:\foxdft08\company\Global , mnt:fffffffb fs/cifs/cifs_dfs_ref.c: CIFS VFS: leaving cifs_dfs_follow_mountpoint (xid = 554) rc = -5 fs/cifs/cifs_dfs_ref.c: leaving cifs_dfs_follow_mountpoint Debug log of "ls -la /mnt/bla/Global/", on sec=ntlmv2: fs/cifs/dir.c: CIFS VFS: in cifs_lookup as Xid: 563 with uid: 0 fs/cifs/dir.c: parent inode = 0xc394a1ac name is: Global and dentry = 0xd1e0aa18 fs/cifs/dir.c: NULL inode in lookup fs/cifs/dir.c: Full path: \\foxdft13.fox.local\company\Global inode = 0x (null) fs/cifs/inode.c: Getting info on \\foxdft13.fox.local\company\Global fs/cifs/transport.c: For smb_command 50 fs/cifs/transport.c: Sending smb: total_len 148 fs/cifs/connect.c: rfc1002 length 0x27 fs/cifs/connect.c: invalid transact2 word count Status code returned 0xc0000257 NT_STATUS_PATH_NOT_COVERED fs/cifs/netmisc.c: Mapping smb error code 3 to POSIX err -66 fs/cifs/cifssmb.c: Send error in QPathInfo = -66 fs/cifs/inode.c: creating fake fattr for DFS referral fs/cifs/cifssmb.c: In GetSrvInodeNum for \\foxdft13.fox.local\company\Global fs/cifs/transport.c: For smb_command 50 fs/cifs/transport.c: Sending smb: total_len 148 fs/cifs/connect.c: rfc1002 length 0x27 fs/cifs/connect.c: invalid transact2 word count Status code returned 0xc0000257 NT_STATUS_PATH_NOT_COVERED fs/cifs/netmisc.c: Mapping smb error code 3 to POSIX err -66 fs/cifs/cifssmb.c: error -66 in QueryInternalInfo fs/cifs/inode.c: GetSrvInodeNum rc -66 CIFS VFS: Autodisabling the use of server inode numbers on \\foxdft13.fox.local\company. This server doesn't seem to support them properly. Hardlinks will not be recognized on this mount. Consider mounting with the "noserverino" option to silence this message. fs/cifs/inode.c: looking for uniqueid=59 fs/cifs/inode.c: cifs_revalidate_cache: revalidating inode 59 fs/cifs/inode.c: cifs_revalidate_cache: inode 59 is new fs/cifs/inode.c: inode 0xe289a7ac old_time=0 new_time=30796734 fs/cifs/dir.c: CIFS VFS: leaving cifs_lookup (xid = 563) rc = 0 fs/cifs/cifs_dfs_ref.c: in cifs_dfs_follow_mountpoint fs/cifs/cifs_dfs_ref.c: CIFS VFS: in cifs_dfs_follow_mountpoint as Xid: 564 with uid: 0 fs/cifs/transport.c: For smb_command 117 fs/cifs/transport.c: Sending smb: total_len 88 fs/cifs/connect.c: rfc1002 length 0x3c fs/cifs/connect.c: CIFS Tcon rc = 0 ipc_tid = 20487 fs/cifs/cifssmb.c: In GetDFSRefer the path \foxdft13.fox.local\company\Global fs/cifs/transport.c: For smb_command 50 fs/cifs/transport.c: Sending smb: total_len 144 fs/cifs/connect.c: rfc1002 length 0x124 fs/cifs/cifssmb.c: Decoding GetDFSRefer response BCC: 233 Offset 56 fs/cifs/cifssmb.c: num_referrals: 1 dfs flags: 0x2 ... fs/cifs/cifs_dfs_ref.c: DFS: ref path: \foxdft13.fox.local\company\Global fs/cifs/cifs_dfs_ref.c: DFS: node path: \foxdft08\company\Global fs/cifs/cifs_dfs_ref.c: DFS: fl: 2, srv_type: 0 fs/cifs/cifs_dfs_ref.c: DFS: ref_flags: 0, path_consumed: 34 fs/cifs/dns_resolve.c: dns_resolve_server_name_to_ip: resolved: foxdft08 to 10.0.0.72 fs/cifs/cifsfs.c: Devname: \\foxdft08\company flags: 0 fs/cifs/connect.c: CIFS VFS: in cifs_mount as Xid: 565 with uid: 0 fs/cifs/connect.c: prefix path /Global fs/cifs/connect.c: Username: vmtest fs/cifs/connect.c: UNC: \\foxdft08\company ip: 10.0.0.72 fs/cifs/connect.c: Socket created fs/cifs/connect.c: sndbuf 16384 rcvbuf 87380 rcvtimeo 0x6d6 fs/cifs/connect.c: CIFS VFS: in cifs_get_smb_ses as Xid: 566 with uid: 0 fs/cifs/connect.c: Existing smb sess not found fs/cifs/cifssmb.c: secFlags 0x4 fs/cifs/transport.c: For smb_command 114 fs/cifs/transport.c: Sending smb: total_len 82 fs/cifs/connect.c: Demultiplex PID: 18760 fs/cifs/connect.c: rfc1002 length 0x6b fs/cifs/cifssmb.c: Dialect: 2 fs/cifs/cifssmb.c: Signing disabled fs/cifs/cifssmb.c: negprot rc 0 fs/cifs/connect.c: Security Mode: 0x3 Capabilities: 0xf3fd TimeAdjust: 3600 fs/cifs/sess.c: sess setup type 2 fs/cifs/transport.c: For smb_command 115 fs/cifs/transport.c: Sending smb: total_len 346 fs/cifs/connect.c: rfc1002 length 0x27 Status code returned 0xc000006d NT_STATUS_LOGON_FAILURE fs/cifs/netmisc.c: Mapping smb error code 5 to POSIX err -13 fs/cifs/misc.c: Null buffer passed to cifs_small_buf_release fs/cifs/sess.c: ssetup freeing small buf f71ecfc0 CIFS VFS: Send error in SessSetup = -13 fs/cifs/connect.c: CIFS VFS: leaving cifs_get_smb_ses (xid = 566) rc = -13 fs/cifs/connect.c: CIFS VFS: leaving cifs_mount (xid = 565) rc = -13 CIFS VFS: cifs_mount failed w/return code = -13 fs/cifs/cifs_dfs_ref.c: cifs_dfs_follow_mountpoint: cifs_dfs_do_refmount:\foxdft08\company\Global , mnt:fffffff3 fs/cifs/cifs_dfs_ref.c: CIFS VFS: leaving cifs_dfs_follow_mountpoint (xid = 564) rc = -13 fs/cifs/cifs_dfs_ref.c: leaving cifs_dfs_follow_mountpoint Any ideas on how to troubleshoot this further? Best regards, Robbert -- To unsubscribe from this list: send the line "unsubscribe linux-cifs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
