On 2018-06-26, Predrag Punosevac <punoseva...@gmail.com> wrote: > Hi misc, > > I have a question about amd daemon. I recently rebuilt the main file > server for our university lab and decided to use separate ZFS datasets > for user home directories. Our main file server runs 11.1-RELEASE-p11. > That creates a bit of a problem as each home directory has to be a > separate NFS mount. For more detailed description I will refer you to > the summary I wrote a while ago > > https://forums.freebsd.org/threads/nested-children-zfs-datasets-and-nfs-exports-for-recursive-mount.63411/ > > Long story short unlike few startups for which I originally implemented > the setup our shell gateways run OpenBSD (clients over there were RHEL > machines and you guessed I used autofs daemon to mount home directories > per request instead of /etc/fstab). > > I am trying to accomplish the same on OpenBSD but I am going nowhere so > far. > > lop1# uname -a > OpenBSD lop1.int.autonlab.org 6.3 GENERIC.MP#4 amd64 > > lop1# more /etc/amd/master > /home amd.home > > lop1# more /etc/amd/amd.home > /defaults > type:=host;sublink:=${key};opts:=rw,noatime,-a=4,vers=3,proto=tcp,nosuid,nodev > * > rhost:=gaia.int.autonlab.org;rfs:=/storage/zfsauton2/home/ewinston > > I do launch daemon as > > amd -a /zfsauton2 > > but I get amd:38887 on /zfsauton2/home type nfs (v2, udp, intr, > timeo=100, retrans=101) > > version 2 of NFS protocol which tells me that none of my configuration > files has been read.
amd acts as an NFS server itself, that's how it is hooked into the normal OS filesystem. The line above is showing the local mount to the 'magic' directory provided by amd. amd's built-in NFS server is v2-only, regardless of what the 'backing' mount uses (either a remote NFS mount, or a mount to a local device such as a CDROM or an device with an FFS filesystem that you don't want to leave mounted all the time).
