Linux in-kernel CIFS client for attaching to Samba or Windows servers

headers MediaVisa.net | 1 Nov 2005 13:22

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On my server, with security = user, I have the following share:
[Music]
        comment = Music Collection
        browseable = yes
        writable = yes
        locking = no
        public = yes
        path = /mnt/Music

Now I can mount this as guest fine with smbfs, but not with cifs:

[root <at> Nova mnt]# mount -t smbfs -o guest //192.168.1.3/Music /mnt/Music
Anonymous login successful
[root <at> Nova mnt]# umount Music
[root <at> Nova mnt]# mount -t cifs -o guest //192.168.1.3/Music /mnt/Music
mount error 13 = Permission denied
Refer to the mount.cifs(8) manual page (e.g.man mount.cifs)
[root <at> Nova mnt]# modinfo cifs
filename:       /lib/modules/2.6.14-archck1/kernel/fs/cifs/cifs.ko
author:         Steve French <sfrench <at> us.ibm.com>
license:        GPL
description:    VFS to access servers complying with the SNIA CIFS
Specification e.g. Samba and Windows
version:        1.35
vermagic:       2.6.14-archck1 PENTIUMM REGPARM 4KSTACKS gcc-4.0
depends:
srcversion:     410817CEE7E1AE3B2BE003B
parm:           cifs_max_pending:Simultaneous requests to server. Default:
50 Range: 2 to 256 (int)
parm:           cifs_min_small:Small network buffers in pool. Default: 30
Range: 2 to 256 (int)
parm:           cifs_min_rcv:Network buffers in pool. Default: 4 Range: 1 to
64 (int)
parm:           CIFSMaxBufSize:Network buffer size (not including header).
Default: 16384 Range: 8192 to 130048 (int)

What could be wrong?
--

-- 
Frederik Himpe

> Is my setup wrong or is umask setting supposed to alter default
> permissions for new files on a cifs-mount to a Samba server?
> 
> Setup:
> Samba 3.0.11 server with:
> 	unix extensions = yes
>          map archive = No
>          mangled names = No
>          delete readonly = Yes
>          create mask = 0755
>          nt acl support = No
> 
> 
> Client: Linux 2.6.10 (cifs 1.28 dated Dec 24), mount.cifs version 1.5
> mounted with default options.

Hi Eirik,

We have noticed the same problem on CentOS 4.2. 

The server is a RHEL3 U5 with samba-3.0.9-1.3E.3, the client is a CentOS
4.2 with Kernel 2.6.9-22.0.1.ELsmp.

The default cifs module (v1.20) honors umask as expected, but
latest cifs module (v1.39) compiled from sources available on
http://pserver.samba.org/samba/ftp/cifs-cvs/, doesn't honor umask setting
by default.

We have found that mounting cifs filesystem with the "noacl" option,
solves this issue. POSIX ACLs are enabled by default on cifs but are
disabled in our Samba server.

Regards,
             Juanjo

--
Juan José Villaplana Querol/Servei d'Informàtica/Universitat Jaume I
Powered by Mutt [http://www.mutt.org/]

howdy -
  I have been having intermittent problems using the cifs vfs module in 
the 2.6 linux kernel.  On an infrequent but regular basis, I get the 
following error when trying to mount a share:

"mount error 11 = Resource temporarily unavailable
Refer to the mount.cifs(8) manual page (e.g.man mount.cifs)".

I know that I am allowed to mount this share.  In fact, doing things 
like mounting another share on the same machine seem to make the problem 
go away.  I was just wondering if anybody has run into this or a similar 
problem or if you had any idea what might cause it.  If you have any 
extra information to offer in my search for a solution, that would be 
great.  Thanks.

-tucker

--

-- 
Tucker Cunningham
Integration Appliance Inc.
email: tucker <at> intapp.com
cell: 650.387.5980

hi -
  I noticed that if you run multiple mount commands for the same share 
onto the same mountpoint, mount.cifs does not throw an error, it simply 
stacks up entries in the mounttab.  This seems inconsistent with other 
mount commands, which only allow something to be mounted on a mountpoint 
once.  Is this a feature that I'm unaware of, or a bug?  Thanks for your 
help.

-tucker

--

-- 
Tucker Cunningham
Integration Appliance Inc.
email: tucker <at> intapp.com
cell: 650.387.5980

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I've tried various configurations from samba 3.0.14 to 3.0.20, no luck.
I've seen from this thread 

http://lists.samba.org/archive/linux-cifs-client/2005-July/000914.html

that it can't work because the samba cifs client can't use windows
ACLs. Is there any way to circumvent this problem, and copy the ACLs
anyway?

--

-- 
----------------------------------------
Emmanuel Florac     |   Intellique
----------------------------------------

Frederik Himpe wrote:

> On my server, with security = user, I have the following share:
> [Music]
>         comment = Music Collection
>         browseable = yes
>         writable = yes
>         locking = no
>         public = yes
>         path = /mnt/Music
> 
> Now I can mount this as guest fine with smbfs, but not with cifs:
> 
> [root <at> Nova mnt]# mount -t smbfs -o guest //192.168.1.3/Music /mnt/Music
> Anonymous login successful
> [root <at> Nova mnt]# umount Music
> [root <at> Nova mnt]# mount -t cifs -o guest //192.168.1.3/Music /mnt/Music
> mount error 13 = Permission denied
> Refer to the mount.cifs(8) manual page (e.g.man mount.cifs)

Mounting the same share with o user=frederik and giving a password at the
prompt, works perfectly. Using CIFS 1.39 does not change anything. It seems
that when using guest with CIFS, my server does not receive any request,
nothing appears in the Samba logs. Why doesn't it work with guest?

--

-- 
Frederik Himpe

Steve,

I reported a potiential bug to the samba bug report and they sent me to 
you. Here is my bug report

https://bugzilla.samba.org/show_bug.cgi?id=3252

           Summary: When Connection Lost System Hangs
           Product: Samba 3.0
           Version: 3.0.10
          Platform: All
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P3
         Component: Client Tools
        AssignedTo: samba-bugs <at> samba.org
        ReportedBy: bmagic <at> cccwireless.net
         QAContact: samba-qa <at> samba.org

I frequently mount directories with samba shares with my samba client. When the
share isn't available anymore even for a split second my system basically
crashes and I have to restart all services and sometimes reboot. I think that if
a network share goes down and comes back up the client should be able to
reconnect and remount the share without crashing.

Let me know if you or anyone knows anything about his small problem.

thanks
-Blake-

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cifs fails to mount a public share, smbfs succeeds

Re: Should cifs respect umask setting on client? (repost)

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