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I have a systemd service with this declaration: 

RuntimeDirectory=plex
RuntimeDirectoryMode=750

which creates the in memory directory /run/plex.

How would I list the capabilities of this mount point as I would do with mount -l?

filbranden
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Adrian
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1 Answers1

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The RuntimeDirectory= directive does not create a new mount, it only creates a new directory under the existing /run. So, in a way, you're just reusing space from the existing /run.

In other words, look for /run in mount -l output to see the options of the mountpoint where /run/plex lives.

You can also use the findmnt(8) command and pass it the full path with -T to show where the mount point is and its options. For example:

$ findmnt -T /run/plex
TARGET SOURCE FSTYPE OPTIONS
/run   tmpfs  tmpfs  rw,nosuid,nodev,seclabel,mode=755

If you want to know how much space has been allocated for the in-memory tmpfs, you can use the df(1) command:

$ df -h /run/plex
Filesystem      Size  Used Avail Use% Mounted on
tmpfs           3.9G  612K  3.9G   1% /run
filbranden
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