Package: nfs-utils Version: 1:2.6.1-2 Severity: normal Dear Maintainer,
on a fresh debian sid VM, if I "apt install autofs -y", at the end I will have rpc_pipefs mounted in two places: root@sid-autofs-nfs-common:~# mount -t rpc_pipefs root@sid-autofs-nfs-common:~# apt install autofs -y Reading package lists... Done Building dependency tree... Done Reading state information... Done The following additional packages will be installed: keyutils libevent-core-2.1-7 libldap-2.5-0 libldap-common libnfsidmap1 libsasl2-2 libsasl2-modules libsasl2-modules-db nfs-common rpcbind Suggested packages: libsasl2-modules-gssapi-mit | libsasl2-modules-gssapi-heimdal libsasl2-modules-ldap libsasl2-modules-otp libsasl2-modules-sql open-iscsi watchdog The following NEW packages will be installed: autofs keyutils libevent-core-2.1-7 libldap-2.5-0 libldap-common libnfsidmap1 libsasl2-2 libsasl2-modules libsasl2-modules-db nfs-common rpcbind 0 upgraded, 11 newly installed, 0 to remove and 0 not upgraded. Need to get 1,408 kB of archives. After this operation, 4,306 kB of additional disk space will be used. Get:1 http://deb.debian.org/debian sid/main amd64 autofs amd64 5.1.8-1+b1 [292 kB] Get:2 http://deb.debian.org/debian sid/main amd64 libevent-core-2.1-7 amd64 2.1.12-stable-5+b1 [137 kB] Get:3 http://deb.debian.org/debian sid/main amd64 libsasl2-modules-db amd64 2.1.28+dfsg-6 [38.4 kB] Get:4 http://deb.debian.org/debian sid/main amd64 libsasl2-2 amd64 2.1.28+dfsg-6 [77.3 kB] Get:5 http://deb.debian.org/debian sid/main amd64 libldap-2.5-0 amd64 2.5.12+dfsg-2 [227 kB] Get:6 http://deb.debian.org/debian sid/main amd64 libnfsidmap1 amd64 1:2.6.1-2 [85.0 kB] Get:7 http://deb.debian.org/debian sid/main amd64 rpcbind amd64 1.2.6-3 [52.0 kB] Get:8 http://deb.debian.org/debian sid/main amd64 keyutils amd64 1.6.3-1 [61.4 kB] Get:9 http://deb.debian.org/debian sid/main amd64 nfs-common amd64 1:2.6.1-2 [282 kB] Get:10 http://deb.debian.org/debian sid/main amd64 libldap-common all 2.5.12+dfsg-2 [72.2 kB] Get:11 http://deb.debian.org/debian sid/main amd64 libsasl2-modules amd64 2.1.28+dfsg-6 [84.2 kB] Fetched 1,408 kB in 1s (2,215 kB/s) debconf: delaying package configuration, since apt-utils is not installed Selecting previously unselected package autofs. (Reading database ... 23161 files and directories currently installed.) Preparing to unpack .../00-autofs_5.1.8-1+b1_amd64.deb ... Unpacking autofs (5.1.8-1+b1) ... Selecting previously unselected package libevent-core-2.1-7:amd64. Preparing to unpack .../01-libevent-core-2.1-7_2.1.12-stable-5+b1_amd64.deb ... Unpacking libevent-core-2.1-7:amd64 (2.1.12-stable-5+b1) ... Selecting previously unselected package libsasl2-modules-db:amd64. Preparing to unpack .../02-libsasl2-modules-db_2.1.28+dfsg-6_amd64.deb ... Unpacking libsasl2-modules-db:amd64 (2.1.28+dfsg-6) ... Selecting previously unselected package libsasl2-2:amd64. Preparing to unpack .../03-libsasl2-2_2.1.28+dfsg-6_amd64.deb ... Unpacking libsasl2-2:amd64 (2.1.28+dfsg-6) ... Selecting previously unselected package libldap-2.5-0:amd64. Preparing to unpack .../04-libldap-2.5-0_2.5.12+dfsg-2_amd64.deb ... Unpacking libldap-2.5-0:amd64 (2.5.12+dfsg-2) ... Selecting previously unselected package libnfsidmap1:amd64. Preparing to unpack .../05-libnfsidmap1_1%3a2.6.1-2_amd64.deb ... Unpacking libnfsidmap1:amd64 (1:2.6.1-2) ... Selecting previously unselected package rpcbind. Preparing to unpack .../06-rpcbind_1.2.6-3_amd64.deb ... Unpacking rpcbind (1.2.6-3) ... Selecting previously unselected package keyutils. Preparing to unpack .../07-keyutils_1.6.3-1_amd64.deb ... Unpacking keyutils (1.6.3-1) ... Selecting previously unselected package nfs-common. Preparing to unpack .../08-nfs-common_1%3a2.6.1-2_amd64.deb ... Unpacking nfs-common (1:2.6.1-2) ... Selecting previously unselected package libldap-common. Preparing to unpack .../09-libldap-common_2.5.12+dfsg-2_all.deb ... Unpacking libldap-common (2.5.12+dfsg-2) ... Selecting previously unselected package libsasl2-modules:amd64. Preparing to unpack .../10-libsasl2-modules_2.1.28+dfsg-6_amd64.deb ... Unpacking libsasl2-modules:amd64 (2.1.28+dfsg-6) ... Setting up libsasl2-modules:amd64 (2.1.28+dfsg-6) ... Setting up rpcbind (1.2.6-3) ... Created symlink /etc/systemd/system/multi-user.target.wants/rpcbind.service → /lib/systemd/system/rpcbind.service. Created symlink /etc/systemd/system/sockets.target.wants/rpcbind.socket → /lib/systemd/system/rpcbind.socket. Could not execute systemctl: at /usr/bin/deb-systemd-invoke line 145. Setting up libldap-common (2.5.12+dfsg-2) ... Setting up libsasl2-modules-db:amd64 (2.1.28+dfsg-6) ... Setting up libevent-core-2.1-7:amd64 (2.1.12-stable-5+b1) ... Setting up libsasl2-2:amd64 (2.1.28+dfsg-6) ... Setting up keyutils (1.6.3-1) ... Setting up autofs (5.1.8-1+b1) ... Creating config file /etc/auto.master with new version Creating config file /etc/auto.net with new version Creating config file /etc/auto.misc with new version Creating config file /etc/auto.smb with new version Creating config file /etc/autofs.conf with new version Creating config file /etc/default/autofs with new version update-rc.d: warning: start and stop actions are no longer supported; falling back to defaults Created symlink /etc/systemd/system/multi-user.target.wants/autofs.service → /lib/systemd/system/autofs.service. Setting up libldap-2.5-0:amd64 (2.5.12+dfsg-2) ... Setting up libnfsidmap1:amd64 (1:2.6.1-2) ... Setting up nfs-common (1:2.6.1-2) ... Creating config file /etc/idmapd.conf with new version Creating config file /etc/nfs.conf with new version Adding system user `statd' (UID 107) ... Adding new user `statd' (UID 107) with group `nogroup' ... Not creating home directory `/var/lib/nfs'. Created symlink /etc/systemd/system/multi-user.target.wants/nfs-client.target → /lib/systemd/system/nfs-client.target. Created symlink /etc/systemd/system/remote-fs.target.wants/nfs-client.target → /lib/systemd/system/nfs-client.target. auth-rpcgss-module.service is a disabled or a static unit not running, not starting it. nfs-idmapd.service is a disabled or a static unit not running, not starting it. nfs-utils.service is a disabled or a static unit not running, not starting it. proc-fs-nfsd.mount is a disabled or a static unit not running, not starting it. rpc-gssd.service is a disabled or a static unit not running, not starting it. rpc-statd.service is a disabled or a static unit not running, not starting it. rpc-svcgssd.service is a disabled or a static unit not running, not starting it. Processing triggers for libc-bin (2.33-7) ... root@sid-autofs-nfs-common:~# mount -t rpc_pipefs sunrpc on /run/rpc_pipefs type rpc_pipefs (rw,relatime) sunrpc on /var/lib/nfs/rpc_pipefs type rpc_pipefs (rw,relatime) After a reboot, rpc_pipefs is mounted only at /run/rpc_pipefs (the expected behavior). None of this happens if you install just nfs-common: then you only get the /run/rpc_pipefs mount point at the end (without a reboot). There is something going on when autofs is in the same "transaction". The systemd dependency chain seems to be: autofs.service -> nfs-client.target -> rpc-gssd.service -> rpc_pipefs.target. There are two rpc_pipefs.target units: - from the upstream source, which pulls in var-lib-nfs-rpc_pipefs.mount - the generated one, which pulls in run-rpc_pipefs.mount instead. The generated one should have precedence and override the package-provided one. To recap, the rpc-pipefs-generator generator only produces rpc_pipefs.target and run-rpc_pipefs.mount units when pipefs-directory in /etc/nfs.conf is different than /var/lib/nfs/rpc_pipefs (the compiled-in default)[1]. And the generator is run everytime systemctl daemon-reload is called. In Ubuntu I also get weird behavior. There, if I "apt install autofs", I get just one rpc_pipefs mount point but in the wrong place: in /var/lib/nfs/rpc_pipefs. Strangely enough, this only happens in Ubuntu when the order of setting up packages is autofs and then nfs-common. If the order is reversed (nfs-common and then autofs), I only get the /run/rpc_pipefs mountpoint. I don't know what the correct fix would be. Could be hard if this is a race condition. Maybe one alternative would be to not ship the var-lib-nfs-rpc_pipefs.mount unit, and patch the generator to always produce the target and mount units, not just when the pipefs-directory set in nfs.conf is different than the compiled-in default. 1. https://salsa.debian.org/kernel-team/nfs-utils/-/blob/master/systemd/rpc-pipefs-generator.c#L138
