Hi guys, Has anyone successfully mounted a cifs share from a z/OS mainframe to a linux machine? We have a partner who is trying to do that, but the mount fails with a Input/Output error. The same share is successfully mounted to a Windows 7 or a Mac. The attached wireshark captures seem to show that the z/OS returns a malformed Protocol Negotiation request to the mount.cifs, but returns a correct packet to the Windows machine. The user is running an Ububtu 12.04 TLS, kernel version 3.11.0-19-generic. Also tried Ubuntu 10.04 and Centos6.5 with identical results. The server is a z/OS 1.13 Here are the commands we tried: root@cnaf-app-00:~# mount --verbose -t cifs //192.182.1.212/samba /media/samba -o username=mreeves%amoscat0,sec=ntlm mount.cifs kernel mount options: ip=192.168.1.212,unc=//192.168.1.212/samba,sec=ntlm,ver=1,user=mreeves,pass=******** mount error(5): Input/output error Refer to the mount.cifs(8) manual page (e.g. man mount.cifs) root@cnaf-app-00:~# mount --verbose -t cifs //192.182.1.212/samba /media/samba -o username=mreeves%amoscat0,sec=NTLMv2 mount.cifs kernel mount options: ip=192.168.1.212,unc=//192.168.1.212/samba,sec=NTLMv2,ver=1,user=mreeves,pass=******** mount error(5): Input/output error Refer to the mount.cifs(8) manual page (e.g. man mount.cifs) root@cnaf-app-00:~# mount --verbose -t cifs //192.168.1.212/samba /media/samba -o username=mreeves%amoscat0,sec=lanman mount.cifs kernel mount options: ip=192.168.1.212,unc=//192.168.1.212/samba,sec=lanman,ver=1,user=mreeves,pass=******** mount error(5): Input/output error Refer to the mount.cifs(8) manual page (e.g. man mount.cifs) smbclient appears to work, but we get some garbage: oot@cnaf-app-00:/etc/samba# smbclient //192.168.1.212/samba -U mreeves%amoscat0 Domain=[■£Ç■╝Ç■êÇ■¼Ç■£Ç■êÇ■╝Ç■ > > öÇ■ÇÇ] > OS=[■îÇ■╝Ç■îÇ■ñÇ■ÇÇ■ÇÇ■ÿÇ■êÇ■êÇ■áÇ■┤Ç■ÇÇ] > Server=[■ñÇ■êÇ■┤Ç■ÇÇ■îÇ°öDZêDZÿÇ°öDZêÇ■ÇÇ°ÿÇ°╝DZêÇ■ÇÇ■£Ç°ñÇ°╕Ç°ÉÇ°╝DZ£Ç±îÇ■ÇÇ■╕Ç°öDZÉDZ£Ç°╝DZêÇ°¼Ç■ÇÇ■╕Ç°öÇ°ñÇ°£Ç°áÇ°êÇ°╝DZêÇ°áÇ°╝Ç°╝Ç°ÉÇ] > smb: \> ls > . D 0 Thu Apr 3 06:43:17 2014 > .. D 0 Thu Apr 3 06:43:17 2014 > ._.DS_Store 4096 Thu Apr 3 06:43:17 2014 > .DS_Store 6148 Thu Apr 3 06:43:39 2014 > shellscript.txt 3260 Wed Apr 2 19:09:53 2014 > > 65535 blocks of size 32768. 65535 blocks available > smb: \> The following appears in the logs: Apr 4 10:27:28 ubu-14-server1 kernel: [ 4652.808997] CIFS VFS: RFC1001 size 84 smaller than SMB for mid=1 Apr 4 10:27:28 ubu-14-server1 kernel: [ 4652.809034] Bad SMB: : dump of 48 bytes of data at 0xffff880019744540 Apr 4 10:27:28 ubu-14-server1 kernel: [ 4652.809037] 54000000 424d53ff 00000072 c8018000 . . . T ˇ S M B r . . . . . . » Apr 4 10:27:28 ubu-14-server1 kernel: [ 4652.809039] 00000000 00000000 00000000 0e260000 . . . . . . . . . . . . . . & . Apr 4 10:27:28 ubu-14-server1 kernel: [ 4652.809041] 00010000 03000211 00010032 0000ffff . . . . . . . . 2 . . . ˇ ˇ . . Apr 4 10:27:28 ubu-14-server1 kernel: [ 4652.809107] CIFS VFS: cifs_mount failed w/return code = -5 This is the z/OS machine configuration: _IOE_DFS_MODIFY_PATH=/opt/dfslocal/home/dfscntl/modify.rendezvous _IOE_MVS_DFSDFLT=EMCROOT _IOE_LFS_SYNC_INTERVAL=30 _IOE_SMB_CLEAR_PW=NOTALLOWED _IOE_DYNAMIC_EXPORT=ON _IOE_SMB_TRANSPORTS=BOTH _IOE_SMB_CONNECT_MSGS=2 _IOE_SERVER_NAME=EMCZPDT1 _IOE_SMB_COMPUTER_NAME=EMCZPDT1 _IOE_SMB_DOMAIN_NAME=WORKGROUP _IOE_SMB_IDMAP=/opt/dfslocal/home/dfskern/smbidmap _IOE_PROTOCOL_SMB=ON _IOE_WIRE_CODEPAGE=ISO8859-1 _EUV_SVC_MSG_LOGGING=CONSOLE_LOGGING DCE_START_SOCKET_NAME=/opt/dfslocal/home/dfscntl/ioepk.soc TZ=EST5EDT _EUV_AUTOLOG=NO #NLSPATH=/usr/lib/nls/msg/%L/%N:/usr/lpp/Printsrv/En_US/%N NLSPATH=/usr/lib/nls/msg/%L/%N LANG=En_US.IBM-1047 #LIBPATH=/usr/lib:/usr/lpp/Printsrv/lib LIBPATH=/usr/lib _IOE_SMB_OCSF=OFF I am attaching wireshark captures of both the successful mount from a windows machine and the failed one from the linux machine. After my initial mail on the samba-technical list, I was contacted by someone in an identical situation who has also been unable to access their z/OS shares after switching to RHEL 6.x from Windows, so I guess this is not an isolated incident. If anyone has experience with this and has any ideas, any possible problems with the configuration, I would appreciate it! Best Regards, Nadezhda
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ubuntu_cifs
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win_cifs.cap
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