[systemd-devel] stacked automounts

[Michael Olbrich]

On Fri, Nov 24, 2017 at 09:03:23PM +0100, Olaf Hering wrote:
> Is there a way to have stacked automounts?

Not really.

> In this example only /d is mounted when /d/l/1/ is accessed:
> 
> LABEL=d    /d     xfs     noatime,x-systemd.automount,x-systemd.idle-timeout=22 1 2
> /d/i/1.iso /d/l/1 iso9660 ro,loop,x-systemd.automount,x-systemd.idle-timeout=11 0 0
> 
> In the logs I see:
> Set up automount d-l-1.automount.
> Unset automount d-l-1.automount.

Systemd mounts a autofs for each automount
filesystem. In this case this means autofs is mounted to /d/l/1 so the real
filesystem for /d is mounted at boot-time. So using x-systemd.automount for
/d is pointless. It's mounted immediately and cannot expire.

Which version are you using? I tested this with some tmpfs and it works as
expected with systemd v235.

Michael

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