On 12/11/25 03:25 AM, David Tardon wrote:
On Wed, 2025-12-10 at 11:50 -0500, Steven A. Falco wrote:
I posed the question to ChatGPT, and settled on making the NFS mounts
be "noauto", and then creating a service to wait for the network to
truly be up before mounting the filesystem. This works well for me,
and I've attached the service file in case it benefits anyone else.
And ChatGPT produced something that sort-of works, but it is
unnecessarily complicated...
[Unit]
Description=Mount all NFS client filesystems once NAS is reachable
After=network-online.target NetworkManager-wait-online.service
Wants=network-online.target NetworkManager-wait-online.service
[Service]
Type=oneshot
# Wait until the NAS actually responds to ping (up to ~30s)
ExecStartPre=/usr/bin/bash -c 'for i in {1..30}; do ping -c1 -W1 nas
/dev/null 2>&1 && exit 0; sleep 1; done; exit 1'
# Now mount each share explicitly; "noauto" does NOT block these
ExecStart=/usr/bin/mount /shared
RemainAfterExit=yes
[Install]
WantedBy=multi-user.target
Let's consider the following service instead:
[Unit]
Description=Wait till NAS is reachable
After=network.target
Before=network-online.target
Wants=network-online.target
[Service]
Type=oneshot
ExecStart=sh -c 'while ! ping -c1 -W1 nas >/dev/null 2>&1; do sleep 1;
done'
[Install]
WantedBy=multi-user.target
+ it doesn't require any changes to fstab
+ it doesn't hardcode timeout, relying on the systemd-provided one
instead
+ it doesn't have superfluous dependencies
- it delays start of everything that is ordered after network-
online.target , not just the mount of a single network disk, but that's
probably not a big deal
I like that - it is indeed very clean and easy to understand. I'll give it a
try later today.
Thanks,
Steve
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