[systemd-devel] Hotplug auto mounting and masked mount units

[Mantas Mikulėnas]

On Thu, Jan 9, 2020 at 11:03 PM Phillip Susi <phill at thesusis.net> wrote:

> Someone in #debian mentioned to me that they were getting some odd
> errors in their logs when running gparted.  It seems that several years
> ago there was someone with a problem caused by systemd auto mounting
> filesystems in response to udev events triggered by gparted, and so as a
> workaround, gparted masks all mount units.  Curtis Gedeck and I can't
> seem to figure out now, why this was needed because we can't seen to get
> systemd to automatically mount a filesystem just because it's device is
> hot plugged.  Are there any circumstances under which systemd will mount
> a filesystem when it's device is hotplugged?
>

Yes, in nearly all older systemd versions, if a fstab entry had 'auto' then
its generated .mount unit was automatically inserted into the corresponding
.device's Wants= list. (Which IMHO was quite useful with 'auto,nofail'
combined.) This was removed in systemd v242.

-- 
Mantas Mikulėnas
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