On Wed, 2021-03-10 at 22:35 +0800, Ed Greshko wrote: > On 10/03/2021 20:57, Patrick O'Callaghan wrote: > > > > [Sorry for the long delay, but other stuff intervened.] > > > > I've come back to this now and started experimenting incrementally. As > > a first step, I just want to automount/unmount, ignoring the power- > > on/off part for now, i.e. the device is already powered on. This is my > > /etc/fstab entry: > > > > UUID=6cb66da2-147a-4f3c-a513-36f6164ab581 /raid > > ext4 rw,noauto,user,x-systemd.automount 0 0 > > > > and /etc/systemd/system/raid.automount (copied from your example): > > > > [Unit] > > Description=Automount /raid > > > > > > [Automount] > > Where=/raid > > TimeoutIdleSec=10 > > > > > > [Install] > > WantedBy=multi-user.target > > > > > > I've rebooted, and the device starts up mounted: > > > > # findmnt /raid > > TARGET SOURCE FSTYPE OPTIONS > > /raid systemd-1 autofs > > rw,relatime,fd=52,pgrp=1,timeout=10,minproto=5,maxproto=5,direct,pipe_ino=24910 > > > > > > though I'm not sure why as nothing is accessing it. It also remains > > mounted, despite the timeout. > > > > Any thoughts? > > My first thought is that you're doing things a bit different than what I did. > > You have an entry for your disk in the fstab. My understanding is that when > an entry is in fstab mount unit > files will be auto generated. I don't have fstab entries for my automounts. > I can't say that I know it is wise > to mix the methods. > > Using my /aux as the example. When unmounted I see... > > [root@meimei ~]# findmnt /aux > TARGET SOURCE FSTYPE OPTIONS > /aux systemd-1 autofs > rw,relatime,fd=53,pgrp=1,timeout=60,minproto=5,maxproto=5,direct,pipe_ino=26036 > > But when mounted > > [root@meimei ~]# findmnt /aux > TARGET SOURCE FSTYPE OPTIONS > /aux systemd-1 autofs > rw,relatime,fd=53,pgrp=1,timeout=60,minproto=5,maxproto=5,direct,pipe_ino=26036 > /aux nas:/volume1/aux nfs4 > rw,relatime,vers=4.1,rsize=131072,wsize=131072,namlen=255,soft,proto=tcp6,timeo=600 > > I think I would first try removing (commenting out) the fstab entry and > creating raid.mount file in /etc/systemd/system/ > with the contents. > > [Unit] > Description=mount raid > > [Mount] > > What=/dev/disk/by-uuid/6cb66da2-147a-4f3c-a513-36f6164ab581 > > Where=/raid > Options=rw,user > Type=ext4 > > [Install] > WantedBy=multi-user.target > > > At this time I've only used automounts for nfs mounts. I'd try it with local > disk if it weren't for the late hour. > > Also, due to the late hour, I seem to recall seeing something about working > with automounts and external devices > and conflicts arising due to the interference of udev. But I may be mixing > things. So, I'd first see if making the > above changes has any effect.
A couple of things: 1) I used fstab because the systemd.mount man page suggests it's the preferred method, but that may be my misunderstanding. As I said before, I find the systemd docs a real challenge to read. No doubt they are correct, but they remind me of something we used to say about the UNIX man pages back in the 70s: in order to understand one of them, you just have to read all the other ones first. 2) I've only now noticed that findmnt gives an output line even when the device is not mounted (the filesystem type is listed as 'autofs'). My fault for not looking more carefully. Finally, without me doing anything at all except leave the system alone for a few hours, it has suddenly started working. Go figure. I now have to work out where to put the ExecStart/Stop lines. poc _______________________________________________ users mailing list -- users@lists.fedoraproject.org To unsubscribe send an email to users-le...@lists.fedoraproject.org Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/users@lists.fedoraproject.org Do not reply to spam on the list, report it: https://pagure.io/fedora-infrastructure
