Thanks Andreas for those new packages.
I did some testing of the 1.2.8-9.2 packages on a clean jessie install.
They are pretty close but I found an issue with NFS exports in one case.
I used the attached check.sh script to show the state of various targets
as I changed things. The attached results.tar shows the output from it.
Between each major stage below, the system is rebooted.
Then I log in and run check.sh before doing anything else.
Throughout, /etc/network/interfaces contained:
source /etc/network/interfaces.d/*
auto lo
iface lo inet loopback
allow-hotplug eth0
iface eth0 inet dhcp
and /etc/network/interfaces.d/ was empty.
step 1 - jessie system with nfs packages 1.2.8-9
one fstab mount, no exports. no changes to /etc/default/nfs-*.
The fstab mount works ok; it tries to mount it way too early
but we invoke it with the 'bg' option so eventually it works.
step 2 - as above but with the _netdev option added to the fstab entry.
System still tries to mount too early, before dhclient is done,
but it works in the end.
step 3 - as above but export one filesystem.
The fstab mount works, as above.
Tried a few different ways to do the exports
- wildcard host (step3.1)
This works ok.
- point the export at a single host (step3.2)
This tries to start mountd to early, before it can resolve
the hostname given in the exports file.
As a result we end up with an empty export list:
# showmount -e
Export list for install:
#
Restarting the service once the system is fully booted works
# systemctl restart nfs-kernel-server.service
# showmount -e
Export list for install:
/data/INSTALL_1 mayhem.atnf.CSIRO.AU
#
- point the export at a netgroup (step3.3)
This works, even though the netgroup cannot be resolved
(there's no definition for it).
# showmount -e
Export list for install:
/data/INSTALL_1 @all_hosts
#
NB nfs-kernel-server starts before dhclient
Sep 08 17:04:46 install nfs-kernel-server[657]: Exporting directories for NFS kernel daemon....
Sep 08 17:04:46 install kernel: NFSD: Using /var/lib/nfs/v4recovery as the NFSv4 state recovery directory
Sep 08 17:04:46 install kernel: NFSD: starting 90-second grace period (net ffffffff818ba280)
...
Sep 08 17:04:46 install rpc.mountd[738]: Version 1.2.8 starting
Sep 08 17:04:46 install nfs-kernel-server[657]: Starting NFS kernel daemon: nfsd mountd.
Sep 08 17:04:46 install acpid[734]: starting up with netlink and the input layer
Sep 08 17:04:46 install acpid[734]: 1 rule loaded
Sep 08 17:04:46 install acpid[734]: waiting for events: event logging is off
...
Sep 08 17:04:49 install kernel: e1000e: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: None
Sep 08 17:04:49 install kernel: IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
Sep 08 17:04:50 install dhclient[532]: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 6
...
Sep 08 17:04:56 install ifup[522]: Starting rpcbind (via systemctl): rpcbind.service.
Sep 08 17:04:56 install ifup[522]: Starting nfs-common (via systemctl): nfs-common.service.
Sep 08 17:04:56 install kernel: Key type dns_resolver registered
Sep 08 17:04:56 install kernel: NFS: Registering the id_resolver key type
Sep 08 17:04:56 install kernel: Key type id_resolver registered
Sep 08 17:04:56 install kernel: Key type id_legacy registered
step3.4 - install new nfs packages but don't reboot yet.
I didn't analyse this step carefully
step 4 - jessie system with nfs packages 1.2.8-9.2
one fstab mount, one exported directory.
rpc.mountd fails to start because it wants rpcbind to be there,
but rpcbind has not been started yet. showmount -e fails:
# showmount -e
clnt_create: RPC: Program not registered
step4.1 modify /lib/systemd/system/nfs-mountd.service,
- After=network.target local-fs.target
+ After=rpcbind.target network.target local-fs.target
run systemd daemon-reload
but don't reboot.
The exports are still not there
# showmount -e
clnt_create: RPC: Program not registered
re run exports, it fails
# exportfs -rav
exporting @all_hosts:/data/INSTALL_1
# showmount -e
clnt_create: RPC: Program not registered
#
step 5 - reboot after step4.1:
usr-local.mount starts a little (1-2s) later. It starts
just after ifup, but before dhclient has gotten an answer
so it can't resolve the server hostname, but eventually
the mount does work.
Exports also work, in some cases:
- wildcard case is OK (step5.1)
# showmount -e
Export list for install:
/data/INSTALL_1 *
- single-host case FAILS (step5.2)
# showmount -e
Export list for install:
#
- export-to-a-netgroup case is OK (step5.3).
# showmount -e
Export list for install:
/data/INSTALL_1 @all_hosts
In the failing case,
rpc.mountd starts after ifup and rpcbind,
but before dhclient is done.
It can't resolve the hostname of the client system,
so the export is not performed and I end up with
# showmount -e
Export list for install:
#
If I log in and run 'systemctl restart nfs-server.service'
when the system is fully booted, the export succeeds
# showmount -e
Export list for install:
/data/INSTALL_1 client.f.q.d.n
step 6 - as step 5, but with a random 30s wait added to
the end of /etc/default/nfs-kernel-server.
That allowed the export to a single host to work.
# showmount -e
Export list for install:
/data/INSTALL_1 client.f.q.d.n
It works because all the nfs bits have to wait on
nfs-config.service which now takes 30s to complete.
This gives dhclient plenty of time to finish its setup.
Sep 08 17:50:08 install kernel: IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
Sep 08 17:50:08 install dhclient[531]: Internet Systems Consortium DHCP Client 4.3.1
Sep 08 17:50:08 install dhclient[531]: Copyright 2004-2014 Internet Systems Consortium.
Sep 08 17:50:08 install dhclient[531]: All rights reserved.
Sep 08 17:50:08 install dhclient[531]: For info, please visit https://www.isc.org/software/dhcp/
Sep 08 17:50:08 install dhclient[531]:
Sep 08 17:50:08 install ifup[525]: Internet Systems Consortium DHCP Client 4.3.1
Sep 08 17:50:08 install ifup[525]: Copyright 2004-2014 Internet Systems Consortium.
Sep 08 17:50:08 install ifup[525]: All rights reserved.
Sep 08 17:50:08 install ifup[525]: For info, please visit https://www.isc.org/software/dhcp/
Sep 08 17:50:08 install rpcbind[530]: Starting rpcbind daemon....
Sep 08 17:50:08 install dhclient[531]: Listening on LPF/eth0/de:ad:be:ef:5b:e7
...
Sep 08 17:50:11 install kernel: e1000e: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: None
...
Sep 08 17:50:13 install ifup[525]: bound to 1.2.3.4 -- renewal in 824880 seconds.
Sep 08 17:50:13 install ifup[525]: Starting rpcbind (via systemctl): rpcbind.service.
Sep 08 17:50:13 install kernel: FS-Cache: Loaded
Sep 08 17:50:13 install kernel: FS-Cache: Netfs 'nfs' registered for caching
Sep 08 17:50:13 install kernel: Key type dns_resolver registered
Sep 08 17:50:13 install kernel: NFS: Registering the id_resolver key type
Sep 08 17:50:13 install kernel: Key type id_resolver registered
Sep 08 17:50:13 install kernel: Key type id_legacy registered
Sep 08 17:50:38 install rpc.statd[603]: Version 1.2.8 starting
Sep 08 17:50:38 install rpc.statd[603]: Flags: TI-RPC
Sep 08 17:50:38 install rpc.mountd[608]: Version 1.2.8 starting
Sep 08 17:50:38 install systemd[1]: usr-local.mount: Directory /usr/local to mount over is not empty, moun
Sep 08 17:50:38 install kernel: NFSD: Using /var/lib/nfs/v4recovery as the NFSv4 state recovery directory
Sep 08 17:50:38 install kernel: NFSD: starting 90-second grace period (net ffffffff818ba280)
Sep 08 17:50:38 install sm-notify[628]: Version 1.2.8 starting
I tried messing around with depending on the nss-lookup.target
to see if I could make rpc.mountd wait a bit longer (until it
could resolve hostnames) but I was unable to do make it work.
I hope all this is of some help.
--
Attachment:
check.sh
Description: Bourne shell script
Attachment:
results.tar.gz
Description: application/gzip