** Description changed: + [Impact] + + * nfs-mountd doesn't get started because of a race condition happening when rpcbind.socket is not specified as a needed service for it to start. + * nfs-server using rpcbind.target instead of using rpcbind.socket. Target should not be used (Comment #24) + + [Test Case] + + * Install nfs-kernel-server inside a xenial lxc guest and restart it until nfs-mountd doesn't start complaining on rpc error. + * Comment #25 + + [Regression Potential] + + * Cons: Systemd dependencies could brake for nfs-server and nfs-mountd. + * Pros: Patches have been accepted upstream (and tested). + + [Other Info] + + # Original Bug Description + Immediately after boot: root@feynmann:~# systemctl status nfs-kernel-server ● nfs-server.service - NFS server and services - Loaded: loaded (/lib/systemd/system/nfs-server.service; enabled; vendor preset: enabled) - Active: inactive (dead) + Loaded: loaded (/lib/systemd/system/nfs-server.service; enabled; vendor preset: enabled) + Active: inactive (dead) Jun 09 14:35:47 feynmann systemd[1]: Dependency failed for NFS server and services. Jun 09 14:35:47 feynmann systemd[1]: nfs-server.service: Job nfs-server.service/start failed - - root@feynmann:~# systemctl status nfs-mountd.service + + root@feynmann:~# systemctl status nfs-mountd.service ● nfs-mountd.service - NFS Mount Daemon - Loaded: loaded (/lib/systemd/system/nfs-mountd.service; static; vendor preset: enabled) - Active: failed (Result: exit-code) since Thu 2016-06-09 14:35:47 BST; 7min ago - Process: 1321 ExecStart=/usr/sbin/rpc.mountd $RPCMOUNTDARGS (code=exited, status=1/FAILURE) + Loaded: loaded (/lib/systemd/system/nfs-mountd.service; static; vendor preset: enabled) + Active: failed (Result: exit-code) since Thu 2016-06-09 14:35:47 BST; 7min ago + Process: 1321 ExecStart=/usr/sbin/rpc.mountd $RPCMOUNTDARGS (code=exited, status=1/FAILURE) Jun 09 14:35:47 feynmann systemd[1]: Starting NFS Mount Daemon... Jun 09 14:35:47 feynmann rpc.mountd[1321]: mountd: could not create listeners - Jun 09 14:35:47 feynmann systemd[1]: nfs-mountd.service: Control process exited, code=exited + Jun 09 14:35:47 feynmann systemd[1]: nfs-mountd.service: Control process exited, code=exited Jun 09 14:35:47 feynmann systemd[1]: Failed to start NFS Mount Daemon. Jun 09 14:35:47 feynmann systemd[1]: nfs-mountd.service: Unit entered failed state. Jun 09 14:35:47 feynmann systemd[1]: nfs-mountd.service: Failed with result 'exit-code'. root@feynmann:~# systemctl list-dependencies nfs-kernel-server nfs-kernel-server.service ● ├─auth-rpcgss-module.service ● ├─nfs-config.service ● ├─nfs-idmapd.service ● ├─nfs-mountd.service ● ├─proc-fs-nfsd.mount ● ├─rpc-svcgssd.service ● ├─system.slice ● ├─network.target ● └─rpcbind.target ● └─rpcbind.service - root@feynmann:~# systemctl list-dependencies nfs-mountd.service + root@feynmann:~# systemctl list-dependencies nfs-mountd.service nfs-mountd.service ● ├─nfs-config.service ● ├─nfs-server.service ● ├─proc-fs-nfsd.mount ● └─system.slice - root@feynmann:~# + root@feynmann:~# root@feynmann:~# lsb_release -rd Description: Ubuntu 16.04 LTS Release: 16.04 root@feynmann:~# apt-cache policy nfs-kernel-server nfs-kernel-server: - Installed: 1:1.2.8-9ubuntu12 - Candidate: 1:1.2.8-9ubuntu12 - Version table: - *** 1:1.2.8-9ubuntu12 500 - 500 http://gb.archive.ubuntu.com/ubuntu xenial/main amd64 Packages - 100 /var/lib/dpkg/status + Installed: 1:1.2.8-9ubuntu12 + Candidate: 1:1.2.8-9ubuntu12 + Version table: + *** 1:1.2.8-9ubuntu12 500 + 500 http://gb.archive.ubuntu.com/ubuntu xenial/main amd64 Packages + 100 /var/lib/dpkg/status Additional comments: - 1. There seems to be a circular dependency between nfs-mountd and nfs-kernel-server - 2. I can get it working by changing the AFter,Requires in /lib/ssystemd/system/nfs-{mountd|server}.service files. I have managed to get nfs-kernel-server to start but not nfs-mountd. - 3. /usr/lib/systemd/scripts/nfs-utils_env.sh references /etc/sysconfig/nfs which is Centos/RedHat location of this file. Also /etc/default/nfs does not exist. (possibly unrelated to this bug) - 4. A file "/lib/systemd/system/-.slice" exists. this file prevents execution of 'ls *' or 'grep xxx *' commands in that directory. I am unsure whether this is intended by the systemd developers but it is unfriendly when investigating this bug. + 1. There seems to be a circular dependency between nfs-mountd and nfs-kernel-server + 2. I can get it working by changing the AFter,Requires in /lib/ssystemd/system/nfs-{mountd|server}.service files. I have managed to get nfs-kernel-server to start but not nfs-mountd. + 3. /usr/lib/systemd/scripts/nfs-utils_env.sh references /etc/sysconfig/nfs which is Centos/RedHat location of this file. Also /etc/default/nfs does not exist. (possibly unrelated to this bug) + 4. A file "/lib/systemd/system/-.slice" exists. this file prevents execution of 'ls *' or 'grep xxx *' commands in that directory. I am unsure whether this is intended by the systemd developers but it is unfriendly when investigating this bug. Attempted solution: - 1. Edit /lib/systemd/system/nfs-server.service (original lines are + 1. Edit /lib/systemd/system/nfs-server.service (original lines are commented out: [Unit] Description=NFS server and services DefaultDependencies=no Requires=network.target proc-fs-nfsd.mount rpcbind.target # Requires=nfs-mountd.service Wants=nfs-idmapd.service - + After=local-fs.target #After=network.target proc-fs-nfsd.mount rpcbind.target nfs-mountd.service - After=network.target proc-fs-nfsd.mount rpcbind.target + After=network.target proc-fs-nfsd.mount rpcbind.target After=nfs-idmapd.service rpc-statd.service #Before=rpc-statd-notify.service Before=nfs-mountd.service rpc-statd-notify.service ... followed by a systemctl daemon-reload and a reboot. This results in nfs-kernel-server starting correctly but nfs-mountd not so. However starting nfs-mountd manually after reboot is successful: - root@feynmann:~# systemctl status nfs-kernel-server.service + root@feynmann:~# systemctl status nfs-kernel-server.service ● nfs-server.service - NFS server and services - Loaded: loaded (/lib/systemd/system/nfs-server.service; enabled; vendor preset: enabled) - Active: active (exited) since Thu 2016-06-09 15:07:23 BST; 1min 25s ago - Process: 1391 ExecStart=/usr/sbin/rpc.nfsd $RPCNFSDARGS (code=exited, status=0/SUCCESS) - Process: 1384 ExecStartPre=/usr/sbin/exportfs -r (code=exited, status=0/SUCCESS) - Main PID: 1391 (code=exited, status=0/SUCCESS) - Tasks: 0 - Memory: 0B - CPU: 0 - CGroup: /system.slice/nfs-server.service + Loaded: loaded (/lib/systemd/system/nfs-server.service; enabled; vendor preset: enabled) + Active: active (exited) since Thu 2016-06-09 15:07:23 BST; 1min 25s ago + Process: 1391 ExecStart=/usr/sbin/rpc.nfsd $RPCNFSDARGS (code=exited, status=0/SUCCESS) + Process: 1384 ExecStartPre=/usr/sbin/exportfs -r (code=exited, status=0/SUCCESS) + Main PID: 1391 (code=exited, status=0/SUCCESS) + Tasks: 0 + Memory: 0B + CPU: 0 + CGroup: /system.slice/nfs-server.service Jun 09 15:07:23 feynmann systemd[1]: Starting NFS server and services... Jun 09 15:07:23 feynmann systemd[1]: Started NFS server and services. - root@feynmann:~# systemctl status nfs-mountd.service + root@feynmann:~# systemctl status nfs-mountd.service ● nfs-mountd.service - NFS Mount Daemon - Loaded: loaded (/lib/systemd/system/nfs-mountd.service; static; vendor preset: enabled) - Active: inactive (dead) + Loaded: loaded (/lib/systemd/system/nfs-mountd.service; static; vendor preset: enabled) + Active: inactive (dead) root@feynmann:~# systemctl start nfs-mountd.service - - root@feynmann:~# systemctl status nfs-mountd.service + + root@feynmann:~# systemctl status nfs-mountd.service ● nfs-mountd.service - NFS Mount Daemon - Loaded: loaded (/lib/systemd/system/nfs-mountd.service; static; vendor preset: enabled) - Active: active (running) since Thu 2016-06-09 15:09:02 BST; 3s ago - Process: 2044 ExecStart=/usr/sbin/rpc.mountd $RPCMOUNTDARGS (code=exited, status=0/SUCCESS) - Main PID: 2046 (rpc.mountd) - Tasks: 1 - Memory: 904.0K - CPU: 12ms - CGroup: /system.slice/nfs-mountd.service - └─2046 /usr/sbin/rpc.mountd --manage-gids + Loaded: loaded (/lib/systemd/system/nfs-mountd.service; static; vendor preset: enabled) + Active: active (running) since Thu 2016-06-09 15:09:02 BST; 3s ago + Process: 2044 ExecStart=/usr/sbin/rpc.mountd $RPCMOUNTDARGS (code=exited, status=0/SUCCESS) + Main PID: 2046 (rpc.mountd) + Tasks: 1 + Memory: 904.0K + CPU: 12ms + CGroup: /system.slice/nfs-mountd.service + └─2046 /usr/sbin/rpc.mountd --manage-gids Jun 09 15:09:02 feynmann systemd[1]: Starting NFS Mount Daemon... Jun 09 15:09:02 feynmann rpc.mountd[2046]: Version 1.2.8 starting Jun 09 15:09:02 feynmann systemd[1]: Started NFS Mount Daemon. Enabling nfs-mountd.service (systemctl enable nfs-mountd.service) has no effect in this case. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: nfs-kernel-server 1:1.2.8-9ubuntu12 [modified: lib/systemd/system/nfs-server.service] ProcVersionSignature: Ubuntu 4.4.0-22.40-generic 4.4.8 Uname: Linux 4.4.0-22-generic x86_64 ApportVersion: 2.20.1-0ubuntu2.1 Architecture: amd64 Date: Thu Jun 9 14:38:58 2016 InstallationDate: Installed on 2016-06-08 (1 days ago) InstallationMedia: Ubuntu-Server 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.3) ProcEnviron: - SHELL=/bin/bash - TERM=linux - PATH=(custom, no user) - LANG=en_GB.UTF-8 - LANGUAGE=en_GB:en + SHELL=/bin/bash + TERM=linux + PATH=(custom, no user) + LANG=en_GB.UTF-8 + LANGUAGE=en_GB:en SourcePackage: nfs-utils UpgradeStatus: No upgrade log present (probably fresh install)
** Changed in: nfs-utils (Ubuntu) Importance: High => Medium ** Changed in: nfs-utils (Ubuntu Xenial) Importance: High => Medium -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1590799 Title: nfs-kernel-server does not start because of dependency failure To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nfs-utils/+bug/1590799/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
