[linux-cifs-client] Re: CIFS and Windows 2003 Server shares

[Jeff Layton]

On Thu, 08 Jan 2009 22:18:44 -0500
Rob Henderson <robh at cs.indiana.edu> wrote:

> 
> 
> Jeff Layton wrote:
> > On Thu, 08 Jan 2009 17:04:35 -0500
> > Rob Henderson <robh at cs.indiana.edu> wrote:
> >
> >   
> >> Jeff Layton wrote:
> >>     
> >>> Rob,
> >>>
> >>> Your problem sounds like a different problem from what Leonardo
> >>> described, and is probably just poor error handling in the cifs_mount
> >>> code. We've done a lot of cleanup to that code recently, so results
> >>> with more recent kernels might be better. If you have a place to test
> >>> them, please test the kernels on my people.redhat.com page and report
> >>> the results:
> >>>
> >>> http://people.redhat.com/jlayton/
> >>>
> >>> ...they have updated CIFS code. Both the RHEL4 and RHEL5 kernels should
> >>> have the cifs_mount overhaul.
> >>>
> >>>   
> >>>       
> >> Thanks, Jeff.  I just grabbed and installed 2.6.18-128.el5.jtltest.57PAE 
> >> and didn't have any luck.  The cifs mounts fail completely (even with 
> >> just one user) and tcpdump shows they aren't generating any traffic to 
> >> the samba server.  I ran the mount via strace and it says it is 
> >> panicing.  Here are the results:
> >>
> >> # strace -f -v mount -t cifs //curie.cs.indiana.edu/robh /u/robh
> >> ... lots of output deleted ...
> >> [pid  6310] write(3, "Password: ", 10Password: )  = 10
> >> [pid  6310] read(3, "password removed\n", 4096) = 17
> >> [pid  6310] write(3, "\n", 1
> >> )           = 1
> >> [pid  6310] ioctl(3, SNDCTL_TMR_CONTINUE or TCSETSF, {c_iflags=0x500, 
> >> c_oflags=0x5, c_cflags=0xbf, c_lflags=0x8a3b, c_line=0, 
> >> c_cc="\x03\x1c\x7f\x15\x04\x00\x01\x00\x11\x13\x1a\x00\x12\x0f\x17\x16\x00\x00\x00"}) 
> >> = 0
> >> [pid  6310] close(3)                    = 0
> >> [pid  6310] munmap(0xb7f7f000, 4096)    = 0
> >> [pid  6310] mount("//curie.cs.indiana.edu/robh", "/u/robh", "cifs"..., 
> >> MS_MANDLOCK, "unc=//curie.cs.indiana.edu\\robh,"...PANIC: attached pid 
> >> 6310 exited
> >>  <unfinished ... exit status 0>
> >> Process 6309 resumed
> >> <... wait4 resumed> [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], 0, NULL) = 6310
> >> --- SIGCHLD (Child exited) @ 0 (0) ---
> >> exit_group(0)                           = ?
> >>
> >>
> >> I don't see anything being syslogged when I do this.  Please let me know 
> >> what else I can I do to help debug this?
> >>
> >>     
> >
> > Huh. Looks like the userspace helper errored out (though maybe the
> > problem is something else). Did the mount attempt generate any error
> > messages in dmesg? What version of samba-client package do you have
> > installed?
> >
> >   
> 
> No, there isn't anything showing up in dmesg.  Here is the samba version 
> info:
> 
> [root at test ~]# rpm -qa samba\*
> samba-client-3.0.28-1.el5_2.2
> samba-3.0.28-1.el5_2.2
> samba-common-3.0.28-1.el5_2.2
> samba-swat-3.0.28-1.el5_2.2
> 
> Please let me know if there is a newer samba version I should be trying.

No, that should be OK I think...

At this point, I'm going to ask you to go ahead and file a RHBZ:

http://bugzilla.redhat.com/

We're likely to need to go back and forth on this a few times and
collect some info and that's difficult to track over email. Once you
get a bug filed, go ahead and CC me on it or email me with the bug
number and I'll plan to grab it.

Thanks,
-- 
Jeff Layton <jlayton at redhat.com>