Hi, Ok I found by myself. The issue has nothing to do with Ubuntu. But the server needs to have write access to NFS share in order to create .wh..wh stuff. And as mount is made by root, server needs to have root access to NFS exports, which is not acceptable in my case (grant root access to all workstations)... Do you know any workaround? Thanks.
2016-01-27 14:15 GMT+01:00 Lionel Beard <[1]beard.lio...@gmail.com>: Hi, I'm currently testing AuFS in my company, but I'm facing an issue with Ubuntu workstations. I would like to unify two NFS mounts as two RW branches. It is working fine on two Debian servers (wheezy & jessie): (wheezy) # cat /sys/module/aufs/version 3.2.x-debian (jessie) # cat /sys/module/aufs/version 3.16-20140908 But I get this issue on two Ubuntu workstations when I'm trying to create aufs mount: # mount -t aufs -o br=/mnt/nfs1=rw:/mnt/nfs2=rw none /mnt/aufs mount: none is write-protected, mounting read-only mount: cannot mount none read-only This error only happened if at least one of the branch is RW. Ubuntu versions are: - Ubuntu 12.04.5 LTS (GNU/Linux 3.13.0-74-generic x86_64) # cat /sys/module/aufs/version 3.13-20140303 - Ubuntu 15.10 (GNU/Linux 4.2.0-23-generic x86_64) # cat /sys/module/aufs/version 4.x-rcN-20150629 Does anyone know how to resolve this issue? Thanks! References 1. mailto:beard.lio...@gmail.com
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