Re: Mounting SMB2 fails with -EINVAL on 3.7-rc7

[Suresh Jayaraman <sjayaraman-IBi9RG/b67k@public.gmane.org>]

On 11/27/2012 06:26 PM, Pavel Shilovsky wrote:
> 2012/11/27 Suresh Jayaraman <sjayaraman-IBi9RG/b67k@public.gmane.org>:
>> When I try to mount a Samba (3.6.7) share via SMB2, the mount is failing.
>>
>>    mount -t cifs -o vers=2.1,user=joe //server/share /mnt
>>    mount error (22): Invalid Argument
>>
>> Looks like Negotiate Protocol is failing but not sure why.
>>
>> Here's the cFYI snip:
>>
>> [ 2895.256899] CIFS VFS: cifs_mount failed w/return code = -22
>> [ 2904.421947] fs/cifs/cifsfs.c: Devname: //164.99.140.187/local/ flags: 0
>> [ 2904.421999] fs/cifs/connect.c: Username: cg
>> [ 2904.427252] fs/cifs/connect.c: file mode: 0x1ed  dir mode: 0x1ed
>> [ 2904.427434] fs/cifs/connect.c: CIFS VFS: in cifs_mount as Xid: 15 with uid: 0
>> [ 2904.427439] fs/cifs/connect.c: UNC: \\164.99.140.187\local ip: 164.99.140.187
>> [ 2904.427489] fs/cifs/connect.c: Socket created
>> [ 2904.427493] fs/cifs/connect.c: sndbuf 16384 rcvbuf 87380 rcvtimeo 0x1b58
>> [ 2904.428276] fs/cifs/connect.c: CIFS VFS: in cifs_get_smb_ses as Xid: 16 with uid: 0
>> [ 2904.428281] fs/cifs/connect.c: Existing smb sess not found
>> [ 2904.428288] fs/cifs/smb2pdu.c: Negotiate protocol
>> [ 2904.428295] fs/cifs/smb2pdu.c: sec_flags 0x87
>> [ 2904.428301] fs/cifs/transport.c: Sending smb: smb_len=102
>> [ 2904.428460] fs/cifs/connect.c: Demultiplex PID: 1899
>> [ 2904.429585] fs/cifs/connect.c: RFC1002 header 0x49
>> [ 2904.429593] fs/cifs/smb2misc.c: smb2_check_message length: 0x4d, smb_buf_length: 0x49
>> [ 2904.429596] fs/cifs/smb2misc.c: SMB2 data length 0 offset 0
>> [ 2904.429597] fs/cifs/smb2misc.c: SMB2 len 77
>> [ 2904.429648] fs/cifs/transport.c: cifs_sync_mid_result: cmd=0 mid=0 state=4
>> [ 2904.429654] Status code returned 0xc000000d STATUS_INVALID_PARAMETER
>> [ 2904.429661] fs/cifs/smb2maperror.c: Mapping SMB2 status code -1073741811 to POSIX err -22
>> [ 2904.429663] fs/cifs/misc.c: Null buffer passed to cifs_small_buf_release
>> [ 2904.429667] fs/cifs/connect.c: CIFS VFS: leaving cifs_get_smb_ses (xid = 16) rc = -22
>> [ 2904.429883] fs/cifs/connect.c: CIFS VFS: leaving cifs_mount (xid = 15) rc = -22
>> [ 2904.429885] CIFS VFS: cifs_mount failed w/return code = -22
>>
>>
>> Is this a known issue?
>>
> Samba doesn't support SMB2.1 protocol - 2.0 only. We need to add a
> mount option vers=2.0 to enable Samba support.
> 

Ah, ok. I see

enum smb_version {
        Smb_1 = 1,
        Smb_21,
        Smb_30,
};

So, at the current state we won't be able to use smb2 client with Samba
server, right?


Thanks

-- 
Suresh Jayaraman