Bug#798314: systemd: Systemd waits 30 minutes to shut down because of NFS share

[Michael Biebl]

Control: severity -1 important

Am 08.09.2015 um 02:33 schrieb Javier Ayres:
> Package: systemd
> Version: 225-1
> Severity: normal
> 
> I have a NFS share configured in my /etc/fstab as follows:
> 
> 192.168.1.4:/mnt/samsung               /mnt/D3 nfs
> auto,nofail,timeo=25,users,_netdev,bg,comment=x-gvfs-show  0 0
> 
> The drive is mounted correctly at startup, but if I don't manually unmount it
> before shutting down the system will take 30 minutes to shut down. The message
> "A stop job is running for /mnt/D3 (0s / 1min 30s)" is shown; after 90 seconds
> it changes to something like "A stop job is running for /mnt/D3 (1min 30s /
> 3min)" and it keeps incrementing until 30 minutes have passed. I changed the
> fstab entry to:
> 
> 192.168.1.4:/mnt/samsung               /mnt/D3 nfs     users,_netdev,comment=x
> -gvfs-show  0 0
> 
> Now it honors the 1min 30s timeout, but it takes 90 seconds at startup as well
> ("A start job is running...").
> 
> I'm running an up to date version of Debian (testing branch) and the NFS server
> is a Raspberry Pi with Raspbian. I'm happy to provide more details if needed.


I tried to reproduce the problem, using ethernet and ifupdown

- added 1.2.3.4:/test/nfs /mnt/nfs auto,nofail 0 0 to fstab
- rebooted
- checked that /mnt/nfs was correctly mounted
- stop network via ifdown eth0
- run shutdown

This blocks indefinitely here. Inspecting the journal on a debug-shell I get

> Sep 08 18:55:12 debian systemd[1]: Stopped target Remote File Systems.
> Sep 08 18:55:12 debian systemd[1]: Unmounting /mnt/nfs...
> Sep 08 18:55:12 debian systemd[1]: Stopped target Basic System.
> Sep 08 18:55:12 debian systemd[1]: Stopped target Slices.
> Sep 08 18:55:12 debian systemd[1]: Removed slice User and Session Slice.
> Sep 08 18:55:12 debian systemd[1]: Stopped target Sockets.
> Sep 08 18:55:13 debian systemd[1]: Closed D-Bus System Message Bus Socket.
> Sep 08 18:55:13 debian systemd[1]: Closed ACPID Listen Socket.
> Sep 08 18:55:13 debian systemd[1]: Closed Syslog Socket.
> Sep 08 18:55:13 debian systemd[1]: Stopped target Paths.
> Sep 08 18:55:13 debian systemd[1]: Stopped Dispatch Password Requests to Console Directory Watch.
> Sep 08 18:55:13 debian systemd[1]: Stopped Forward Password Requests to Wall Directory Watch.
> Sep 08 18:55:13 debian systemd[1]: Stopped ACPI Events Check.
> Sep 08 18:55:13 debian systemd[1]: Stopped target System Initialization.
> Sep 08 18:55:13 debian systemd[1]: Stopped Apply Kernel Variables.
> Sep 08 18:55:13 debian systemd[1]: Stopped Load Kernel Modules.
> Sep 08 18:55:13 debian systemd[1]: Stopping LSB: NFS support files common to client and server...
> Sep 08 18:55:13 debian nfs-common[893]: Stopping NFS common utilities: idmapd statd.
> Sep 08 18:55:13 debian systemd[1]: Stopped target Encrypted Volumes.
> Sep 08 18:55:13 debian systemd[1]: Stopped target Swap.
> Sep 08 18:55:13 debian systemd[1]: Unmounted /run/rpc_pipefs.
> Sep 08 18:55:13 debian systemd[1]: Stopped LSB: NFS support files common to client and server.
> Sep 08 18:55:13 debian systemd[1]: Stopped target RPC Port Mapper.
> Sep 08 18:55:13 debian systemd[1]: Stopping LSB: RPC portmapper replacement...
> Sep 08 18:55:13 debian systemd[1]: Stopped target System Time Synchronized.
> Sep 08 18:55:13 debian systemd[1]: Stopping Network Time Synchronization...
> Sep 08 18:55:13 debian systemd[1]: Stopped Network Time Synchronization.
> Sep 08 18:55:13 debian systemd[1]: Stopped Create Volatile Files and Directories.
> Sep 08 18:55:13 debian rpcbind[478]: ^[[1;31mrpcbind terminating on signal. Restart with "rpcbind -w"^[[0m
> Sep 08 18:55:13 debian rpcbind[902]: Stopping rpcbind daemon....
> Sep 08 18:55:13 debian systemd[1]: Stopped LSB: RPC portmapper replacement.
> Sep 08 18:56:43 debian systemd[1]: ^[[1;39mmnt-nfs.mount: Unmounting timed out. Stopping.^[[0m
> Sep 08 18:58:13 debian systemd[1]: ^[[1;39mmnt-nfs.mount: Unmounting timed out. Stopping.^[[0m
> Sep 08 18:58:54 debian kernel: ^[[1;39mnfs: server 192.168.179.20 not responding, timed out^[[0m
> Sep 08 18:59:43 debian systemd[1]: ^[[1;39mmnt-nfs.mount: Unmounting timed out. Stopping.^[[0m

and that goes on

-- 
Why is it that all of the instruments seeking intelligent life in the
universe are pointed away from Earth?

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