Create RAMDISK on Libreelec v 8.x

Hi ,

I'm running LibreElec on Odroid hardware and want to create a 50MB Ramdisk. I have other mount scripts for Samba mounts that work. But this one for RAMDISK fails - Here is a copy of the script I've tried. Please advice on how to resolve this:

The mount script is named per LE requirements - script is named 'storage-.tmp-RAMDISK.mount' and located under /storage/.config/system.d

Here is what I did and the error I get:

systemctl enable storage-.tmp-RAMDISK.mount

systemctl start storage-.tmp-RAMDISK.mount

systemctl status storage-.tmp-RAMDISK.mount. results in:

storage-.tmp-RAMDISK.mount - RAMDISK mount script

Loaded: loaded (/storage/.config/system.d/storage-.tmp-RAMDISK.mount; enabled; vendor preset: disabled)

Active: failed (Result: exit-code) since Tue 2018-11-27 12:25:48 EST; 24s ago

Where: /storage/.tmp/RAMDISK

What: tmpfs

CPU: 4ms

Nov 27 12:25:48 librelec systemd[1]: Mounting RAMDISK mount script...

Nov 27 12:25:48 librelec systemd[1]: storage-.tmp-RAMDISK.mount: Mount process exited, code=exited status=255

Nov 27 12:25:48 librelec systemd[1]: Failed to mount RAMDISK mount script.

Nov 27 12:25:48 librelec systemd[1]: storage-.tmp-RAMDISK.mount: Unit entered failed state.

[Unit]
# Here we will mount a RAMDISK  
Description=RAMDISK mount script

# if we do network mounts like here we *require* 'network-online.service'
# which checks if the network is online
Requires=network-online.service

# our scripts must start *after* 'network-online.service', on timeout and if
# 'network-online.service' fails we can not mount and this scripts fails too
After=network-online.service

# usually we mount networks shares because we want they avaible *before* XBMC starts.
# so XBMC has access to this mounts from beginning. Note: this slows down the boot!
Before=kodi.service


[Mount]
# The share we want mount
What=tmpfs

# Where we want mount this share
Where=/storage/.tmp/RAMDISK

# Any options you usually use with the "-o" parameter in the mount command
Options=size=50m

# I've tried with "size=50m" and that didn't help either

# filesystem type
Type=tmpfs


[Install]
WantedBy=multi-user.target

Yes, top reports over 1GB free memory:

top - 13:02:46 up 47 min, 1 user, load average: 2.51, 2.44, 2.35

Tasks: 125 total, 2 running, 123 sleeping, 0 stopped, 0 zombie

%Cpu(s): 2.2 us, 1.6 sy, 0.5 ni, 95.7 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st

KiB Mem : 1856264 total, 1067008 free, 218696 used, 570560 buff/cache

KiB Swap: 0 total, 0 free, 0 used. 1439412 avail Mem

It looks like it worked with lower value of 20m and then I did a umount and tried it again with 50m and that worked too. (the only thing different is I emptied the destination folder a few minutes ago)

No idea why it didn't work the first time. But now it seems to have survived a reboot as well.

Thanks for confirming that the script was correct and suggesting to try lower value.