Hi Jeff, Am Freitag, den 10.12.2010, 06:34 -0500 schrieb Jeff Layton: > On Fri, 10 Dec 2010 11:25:46 +0100 > Marcus <lists@xxxxxxxxxxxx> wrote: > > > Hi, > > > > Am Donnerstag, den 09.12.2010, 01:37 +0100 schrieb Marcus: > > > > > > are there any known issues with cifs and DFS-shares on Netapp file > > > servers? We have a Netapp file sever with DFS on the user's home shares. > > > The home shares can successfully mounted with > > > > > > mount -t cifs //sever/home/username /mnt/ -o user=username,domain=AD > > > > > > but the connection hangs in the moment a directory listing is started. > > > The strange thing is that only shares with activated DFS show this > > > problem. I'm not maintaining the Netapp file server therefore a can't > > > post more information about that system. On client side I'm using Ubuntu > > > LTS 10.04.1. > > > > This error only comes up, if DFS is activated on a share on the NetApp > > Server. Here is a kernel log: > > > > Dec 10 11:10:37 lebowski kernel: [ 3586.471662] Bad SMB: : dump of 48 > > bytes of data at 0xe44e5c00 > > Dec 10 11:10:37 lebowski kernel: [ 3586.471675] 0000009a 424d53ff > > 00000032 80018800 . . . . ÿ S M B 2 . . . . . . . > > Dec 10 11:10:37 lebowski kernel: [ 3586.471688] 00000000 00000000 > > 00000000 26420040 . . . . . . . . . . . . @ . B & > > Dec 10 11:10:37 lebowski kernel: [ 3586.471701] 001a0800 7000020a > > 02000000 00003800 . . . . . . . p . . . . . 8 . . > > Dec 10 11:11:03 lebowski kernel: [ 3612.832108] CIFS VFS: server not > > responding > > Dec 10 11:11:03 lebowski kernel: [ 3612.832125] CIFS VFS: No response > > for cmd 50 mid 26 > > Dec 10 11:11:05 lebowski kernel: [ 3614.656937] CIFS VFS: RFC1001 size > > 154 bigger than SMB for Mid=30 > > Dec 10 11:11:05 lebowski kernel: [ 3614.656953] Bad SMB: : dump of 48 > > bytes of data at 0xe44e5c00 > > Dec 10 11:11:05 lebowski kernel: [ 3614.656967] 0000009a 424d53ff > > 00000032 80018800 . . . . ÿ S M B 2 . . . . . . . > > Dec 10 11:11:05 lebowski kernel: [ 3614.656979] 00000000 00000000 > > 00000000 26420040 . . . . . . . . . . . . @ . B & > > Dec 10 11:11:05 lebowski kernel: [ 3614.656994] 001e0800 7000020a > > 02000000 00003800 . . . . . . . p . . . . . 8 . . > > Dec 10 11:11:33 lebowski kernel: [ 3642.832284] CIFS VFS: server not > > responding > > Dec 10 11:11:33 lebowski kernel: [ 3642.832299] CIFS VFS: No response > > for cmd 50 mid 30 > > Dec 10 11:11:40 lebowski kernel: [ 3649.895000] CIFS VFS: RFC1001 size > > 154 bigger than SMB for Mid=34 > > Dec 10 11:11:40 lebowski kernel: [ 3649.895017] Bad SMB: : dump of 48 > > bytes of data at 0xe44e5c00 > > Dec 10 11:11:40 lebowski kernel: [ 3649.895030] 0000009a 424d53ff > > 00000032 80018800 . . . . ÿ S M B 2 . . . . . . . > > Dec 10 11:11:40 lebowski kernel: [ 3649.895043] 00000000 00000000 > > 00000000 26420040 . . . . . . . . . . . . @ . B & > > Dec 10 11:11:40 lebowski kernel: [ 3649.895056] 00220800 7000020a > > 02000000 00003800 . . " . . . . p . . . . . 8 . . > > -------------------------- > > > > umounting is impossible and gives the following error: > > > > -------------------------- > > unmount error 16 = Device or resource busy > > Refer to the umount.cifs(8) manual page (man 8 umount.cifs) > > unmount error 16 = Device or resource busy > > Refer to the umount.cifs(8) manual page (man 8 umount.cifs) > > -------------------------- > > > > Any ideas? Seems to be an error of the NetApp Fileserver acting not RFC > > conform. > > > > Is this the right list to discuss or should I post on linux-cifs-client > > list? > > > (cc'ing linux-cifs mailing list) > > Probably because the ls is hung and is holding references to the mount... > > I've successfully tested against netapp's CIFS implementation in the > past, but there are significant bugs in it. The errors you're seeing > look like an alignment problem of some sort -- i.e. the server is > sending packets that have incorrect length fields in them. This isn't > the first such problem I've seen with OnTap. > > You're welcome to open a bug at bugzilla.samba.org, cc me, and I'll > take a look when I have time. Gathering wire captures during one of > these events and attaching them to the bug would help to track down the > problem. It's likely to be Netapp's bug however... Thanks for helping. I've posted a bug [1] with a tcpdump. Have a nice weekend, Marcus [1] https://bugzilla.samba.org/show_bug.cgi?id=7860 -- To unsubscribe from this list: send the line "unsubscribe linux-cifs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
