On 1.3.2013 16.40, Van wrote: > > 01.03.2013, 15:22, "Van" <van-1 at yandex.ru>: >> 26.02.2013, 20:01, "Veli-Pekka Kestilä" <centos at vpk.nu>: >>> Greetings, >>> >>> I have problem using Dom0 as NFS(v4)-server and DomU as client. When >>> ever the client actually tries to copy data to nfs-server the virtual >>> network (bridge) between the two hosts completely freezes and stops >>> working. After this of course the client hangs waiting nfs-server to >>> answer and server continues to try to contact nfslock daemon on the client. >>> >>> Dom0 is still accessible from outside trough virbr0 which the client >>> doesn't have access. The problems only come on data transfer as making >>> directories and removing them and doind ls works fine before one tries >>> to transfer data. >>> > Show the command or line from /etc/fstab whitch you use for mounting NFS-volume. I think rsize/wsize larger then MTU. > -- > Трудно жить ничего не делая, но мы привыкли бороться с трудностями. > _______________________________________________ > CentOS-virt mailing list > CentOS-virt at centos.org > http://lists.centos.org/mailman/listinfo/centos-virt Thank you for taking the time. Yes. They are bigger, rsize=32768, wsize=32768 and MTU:1500 So growing MTU or decreasing rsize and wsize could solve the problem? Need to create new test system to test this. -vpk