Yes, you need centos kernel version >= 3.10.0-514 for using NFSv4.1 mounts. - Sriram On 3/16/19, 5:53 PM, "Jeff Layton" <jlayton@redhat.com> wrote: On Sat, 2019-03-16 at 16:14 +0800, QR wrote: > We are getting "Input/output error" when reading regular files on CentOS7.2 with nfs4.1(4.0 is ok). > Is anyone know about this? > Thanks in advance. > > Ganesha server info > kernel version : 3.10.0-693.17.1.el7.x86_64(CentOS 7.5.1804) > ganesha version: 3bd444c9706e02b778343c9787a7ce3411a5ce61(V2.8-dev.22) > FSAL : gluster > nfs client info > kernel version : 3.10.0-327.el7.x86_64(CentOS 7.2.1511) > nfs version : nfs4.1 > mount options : rw,relatime,vers=4.1,rsize=1048576,wsize=1048576,namlen=255,hard,proto=tcp,port=0,timeo=600,retrans=2,sec=sys,clientaddr=XXX,local_lock=none,addr=YYY I'd suspect a bug in the client with a kernel that old. You may want to update the kernel on the client and test again. -- Jeff Layton <jlayton@redhat.com> _______________________________________________ Devel mailing list -- devel@lists.nfs-ganesha.org To unsubscribe send an email to devel-leave@lists.nfs-ganesha.org