From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrew Martin Subject: "CIFS VFS: SMB response too short (9 bytes)" when copying data from CIFS mount Date: Mon, 28 Sep 2015 17:39:29 -0500 (CDT) Message-ID: <1731839987.81462.1443479968995.JavaMail.zimbra@xes-inc.com> References: <1936200018.81178.1443479619664.JavaMail.zimbra@xes-inc.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit To: linux-cifs-u79uwXL29TY76Z2rM5mHXA@public.gmane.org Return-path: In-Reply-To: <1936200018.81178.1443479619664.JavaMail.zimbra-AQeFf1F/bRxBDgjK7y7TUQ@public.gmane.org> Sender: linux-cifs-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-ID: Hello, I have tested this setup on Ubuntu 14.04 using 3.13.0-32-generic and 3.19.0-28-generic with the same results (cifs-utils 6.0 in both cases). I have a CIFS mountpoint set up on the server with the following options: ro,relatime,vers=1.0,cache=strict,username=myusername,domain=EXAMPLE,uid=0,noforceuid,gid=0,noforcegid,addr=192.168.1.4,unix,posixpaths,serverino,acl,rsize=1048576,wsize=65536,actimeo=1 0 0 I am then using rsync to sync data from the mountpoint to a local directory. Shortly after starting rsync, I see dmesg fill up with this message repeated hundreds of times: CIFS VFS: SMB response too short (9 bytes) At this point, if I watch the df output I see that no new data is being synced locally. If I strace the rsync process, this sometimes makes rsync continue syncing data for a minute or two, but eventually it stops again. Note that I encountered this same issue a few months ago using perl: http://permalink.gmane.org/gmane.linux.kernel.cifs/10640 What can I do to debug this? Is there a bug in the CIFS kernel driver? Thanks, Andrew Martin