Re: Linux 3.2.17 and netapp 8.1

[Jeff Layton <jlayton-eUNUBHrolfbYtjvyW6yDsg@public.gmane.org>]

On Mon, 14 May 2012 14:43:06 +0200
VALETTE Eric RD-MAPS-REN <eric2.valette-C0LM0jrOve7QT0dZR+AlfA@public.gmane.org> wrote:

> Hi,
> 
> Middle of next week, a netapp filer was replaced by a new netapp FAS 
> 3270 with 8.1 firmware. While previously I had no problem accessing, all 
> the share, now, my log is full of CIFS errors preventing me to access my 
> own content:
> 
> Mount options:
> 
> domain=ZZZZ,credentials=/xxxx/xxxx/.sambaShareId,uid=yyyyy,gid=zzz,iocharset=utf8,noserverino 
> 0 0
> 
> Is there any known problem with this netapp firmware?
> 
> Note that I have other shares on different using different netapp 
> machine with older firmware that work like a charm.
> 
> -- eric
> 
> 
>         ________________________________________________________________
> [  315.788485] CIFS VFS: RFC1001 size 248 smaller than SMB for mid=34
> [  315.788493] Bad SMB: : dump of 48 bytes of data at 0xffff880123045c00
> [  315.788501]  f8000000 424d53ff 00000032 80018800 . . . \xfffffff8 
> \xffffffff S M B 2 . . . . . . .
> [  315.788508]  00000000 00000000 00000000 19db0040 . . . . . . . . . . 
> . . @ . \xffffffdb .
> [  315.788518]  00220800 c400020a 02000000 00003800 . . " . . . . 
> \xffffffc4 . . . . . 8 . .
> [  315.791476] CIFS VFS: RFC1001 size 248 smaller than SMB for mid=35
> [  315.791481] Bad SMB: : dump of 48 bytes of data at 0xffff880123045dc0
> [  315.791489]  f8000000 424d53ff 00000032 80018800 . . . \xfffffff8 
> \xffffffff S M B 2 . . . . . . .
> [  315.791495]  00000000 00000000 00000000 19db0040 . . . . . . . . . . 
> . . @ . \xffffffdb .
> [  315.791502]  00230800 c400020a 02000000 00003800 . . # . . . . 
> \xffffffc4 . . . . . 8 . .
> [  315.791577] CIFS VFS: Unexpected lookup error -5
> [  315.794489] CIFS VFS: RFC1001 size 248 smaller than SMB for mid=36
> [  315.794495] Bad SMB: : dump of 48 bytes of data at 0xffff880126a8fb80
> [  315.794503]  f8000000 424d53ff 00000032 80018800 . . . \xfffffff8 
> \xffffffff S M B 2 . . . . . . .
> [  315.794510]  00000000 00000000 00000000 19db0040 . . . . . . . . . . 
> . . @ . \xffffffdb .
> [  315.794516]  00240800 c400020a 02000000 00003800 . . $ . . . . 
> \xffffffc4 . . . . . 8 . .
> [  315.794542] CIFS VFS: Unexpected lookup error -5
> [  315.797494] CIFS VFS: RFC1001 size 248 smaller than SMB for mid=37
> [  315.797500] Bad SMB: : dump of 48 bytes of data at 0xffff8801115c5880
> [  315.797507]  f8000000 424d53ff 00000032 80018800 . . . \xfffffff8 
> \xffffffff S M B 2 . . . . . . .
> [  315.797514]  00000000 00000000 00000000 19db0040 . . . . . . . . . . 
> . . @ . \xffffffdb .
> [  315.797521]  00250800 c400020a 02000000 00003800 . . % . . . . 
> \xffffffc4 . . . . . 8 . .
> [  315.797542] CIFS VFS: Unexpected lookup error -5
> 

I'm not sure, but just to confirm -- that's almost certainly an OnTap
bug. Those messages mean that the filer is sending back SMB responses
that have lengths in them that go beyond the end of the frame.

It's almost certainly a similar problem to that reported here:

    https://bugzilla.samba.org/show_bug.cgi?id=8914

In the past, netapp has not shown much interest in interoperating with
clients other than windows. Perhaps though if enough paying customers
complain they'd be willing to fix it.

I'm also not opposed to sensible workarounds in the client for these
sorts of bugs, as long as they aren't too invasive or risky. At the end
of the day though, these are server side bugs and the real fix for this
problem would have to be done there.

-- 
Jeff Layton <jlayton-eUNUBHrolfbYtjvyW6yDsg@public.gmane.org>