CIFS Mounts Fail with Kernel 3.8.1-201.fc18.i686.PAE

Tim Evans tkevans at tkevans.com
Sat Mar 9 13:59:28 UTC 2013


On 03/08/2013 07:08 PM, Ed Greshko wrote:
> On 03/09/13 07:15, Tim Evans wrote:
>> # mount //raptor/unix/FEDORA /raptor
>> Password for root@//raptor/unix/FEDORA:  ********
>> mount error(95): Operation not supported
>> Refer to the mount.cifs(8) manual page (e.g. man mount.cifs)
>>
>> /var/log/messages says:
>>
>> Mar  8 18:09:28 harrier kernel: [  137.431753] FS-Cache: Loaded
>> Mar  8 18:09:28 harrier kernel: [  137.450501] Key type dns_resolver registered
>> Mar  8 18:09:28 harrier kernel: [  137.487793] FS-Cache: Netfs 'cifs' registered for caching
>> Mar  8 18:09:28 harrier kernel: [  137.487890] Key type cifs.spnego registered
>> Mar  8 18:09:28 harrier kernel: [  137.487899] Key type cifs.idmap registered
>> Mar  8 18:09:28 harrier kernel: [  138.043492] CIFS VFS: Send error in QFSUnixInfo = -95
>> Mar  8 18:09:28 harrier kernel: [  138.093133] CIFS VFS: cifs_read_super: get root inode failed
>>
>> Same mount, no problem in kernel-PAE-3.7.9-205.fc18.i686
>
> Try adding "sec=ntlm" to the mount options.
>
> The error seen with recent kernels is usually "mount error(22): Invalid argument" and adding the sec option fixes it....so this may not be related.
>
Yeah!  This works:

# mount.cifs //raptor/unix/FEDORA /raptor -o sec=ntlm

Should have mentioned in my first post: the server is a NetGear ReadyNAS 
(linux-based) storage appliance, not a PC.  There is, however, no 
command-line access to the server's OS; just a web browser interface, 
with almost no authentication options.

Not to take this too OT, but I've used cifs mounts here because NFS 
performance sucks with the same NAS--about 300k/second on backups using 
dump.
-- 
Tim Evans			|   5 Chestnut Court
Linux/UNIX Consulting		|   Owings Mills, MD 21117
http://www.tkevans.com/		|   443-394-3864
tkevans at tkevans.com


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