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# 💾 Linux RAM disk persistent with Systemd timer, service and suspend v2019.10.153
**Bugs are evident™ - MATRIX️**
### Node Version Requirement
```
>=10.16.0
```
### Built on Node
```
v12.11.1
```
The ```async``` and ```await``` keywords are required.
Install NodeJs:
https://nodejs.org/en/download/package-manager/
# Description
[//]: #@corifeus-header:end
## Breaking change
[readme](artifacts/readme/breaking-change.md)
# Install
```bash
sudo npm install -g p3x-ramdisk --unsafe-perm=true --allow-root
```
## IntelliJ Speed
Based on:
http://sheroz.com/pages/blog/improving-development-performance-moving-intellij-idea-cache-ramdisk.html
```text
After all these tricks I tried to open my current project with IntelliJ IDEA 12 …
Wow!!! It is fantastic! Works like a … sword!!!
Why sword?! I don’t know exactly. May be because of Darcula theme. This is just first thought what came to my mind seeing the overall results.
The Intellij IDEA 12 now works as a lightsaber sword, as a weapon of a Jedi Knight, which you can trust in Java world!
```
## Features
* Requires tmpfs, bash, fstab, rsync, memory :)
* Usually, all requirements are available in many Unix flavors
* SystemD
* Service
* Timer
* Suspend
* RAM disk to HDD
* Linux for sure, easy to extend for Unix, BSD, macOS
* Should might need some tuning, but the functions are there, I just only tested in Linux.
## Intel Optane
I think my ramdisk is faster. Ciao!!! (:
# Use case
Speed up IntelliJ and development Node. (Tons of files.)
The result is that the development is many folds faster. No waiting at all.
# Changelog
* [Since **v2019.2.1**, BREAKING CHANGELOG](artifacts/readme/breaking-change.md#v201921)
# Install
## Warning
Do not use the ```$USER``` variable, use the actual username, like ```p3x-robot```.
## So actual install
```text
patrikx3@workstation ~ $ p3x-ramdisk install --help
Usage: install [options] <uid>
Install a p3x-ramdisk
Options:
-h, --help output usage information
-r, --rampath [path] The path of the ram disk, default /home/$USER/ramdisk
-p, --persistent [path] The path of the ram persistent, default /home/$USER/ramdisk-persistent
-g, --gid [group] The gid, it you omit it is the current user
-t, --timer [minutes] The timer in minutes, minimum about 10 minutes, Default is 20 minutes, the best
-s, --size [megabytes] Ramdisk in size of megabytes, default is 4096 megabytes
```
# IMPORTANT
Trash is disabled in GNOME with p3x-ramdisk. It will ask for confirm to delete data.
You might have it in the previous save. It is possible to enable trash bin, but for me is not important now, so I disabled, memory is not cheap.
# Setup
**Use GitHub for info, NPM hides wide strings.**
https://github.com/patrikx3/ramdisk
```bash
# of course your data will never be deleted,
# double persistence (current, previouse, saves every 20 minutes)
# load on boot, plus at shutdown and suspend it saves
sudo npm install -g p3x-ramdisk --unsafe-perm=true --allow-root
# install
# if you need less/more memory, add -s 1024 or even more, 10GB is good :)
sudo p3x-ramdisk install $USER
# Get the output, add to /etc/fstab
echo "tmpfs /home/patrikx3/ramdisk tmpfs gid=10000,uid=10000,size=4096M 0 0" | sudo tee -a /etc/fstab
sudo mount -a
# you should verify the ramdisk is existing now, you might have to reboot
# on linux it can show your settings, like below:
df -h
# if there is an error, you can
sudo p3x-ramdisk stop $USER
# if all good
# STARTUP THE RAMDISK PERSISTENT
sudo p3x-ramdisk start $USER
# you can work like here (this a symlink, so you can't accidentally delete
# so next time boot, it will re-create the symlink ...)
# /home/$USER/ramdisk/p3x-persistence
# SOME DEBUG
p3x-ramdisk watch $USER
# to trigger a savs
p3x-ramdisk save $USER
# you don't need usually to save
# the default is 20 minutes
# the systemd service saves on suspend and shutdown
# to stop the services
# removes sync, so the ramdisk files will be unavailable,
# only be in /home/username/ramdisk-persistent/current
sudo p3x-ramdisk stop $USER
# your duplicate copies are
ls -all /home/$USER/ramdisk-persistent/current/
ls -all /home/$USER/ramdisk-persistent/previous/
# you are done
# the default use case is to speed up working with IntelliJ and my projects to ramdisk
# if you just want persistent folder and that's all
# there is a special folder, .p3x-ramdisk-link
# everything there is linked into /home/$USER
# if there is nothing in .p3x-ramdisk-link
# no linking is. to test it, you might not need it.
```
## Linkin' in /home
```bash
### //LINKING:START
# LINKING - IS NOT REQUIRED, but is good as a sword :)
p3x-ramdisk save $USER
sudo p3x-ramdisk stop $USER
mkdir -p /home/$USER/ramdisk-persistent/current/.p3x-ramdisk-link
cp -avr /home/$USER/.IntelliJIdea2018.3 /home/$USER/ramdisk-persistent/current/.p3x-ramdisk-link
# backup
mkdir -p /home/$USER/backup
mv /home/$USER/.IntelliJIdea2018.3 /home/$USER/backup/
# need to delete the originals, since they become symlinks
rm -rf /home/$USER/.IntelliJIdea2018.3
ln -s /home/$USER/ramdisk-persistent/current/.p3x-ramdisk-link/.IntelliJIdea2018.3 /home/$USER/.IntelliJIdea2018.3
sudo p3x-ramdisk start $USER
### //LINKING:END
```
# Output
## Install
```text
patrikx3@laptop:~/ramdisk/.p3x-ramdik-persistence/content/.p3x-ramdisk-link/Projects/patrikx3/ramdisk$ sudo p3x-ramdisk install patrikx3 -s 6144
2018-05-08 00:30:08: terminal install
2018-05-08 00:30:08: terminal copy
2018-05-08 00:30:08: terminal suspend
2018-05-08 00:30:08: terminal reload services
2018-05-08 00:30:08: terminal install done
Settings: {
"rampath": "ramdisk",
"persistent": "ramdisk-persistent",
"uid": "patrikx3",
"uidNumber": 10000,
"gid": "patrikx3",
"timer": 20,
"size": "4096",
"home": "/home/patrikx3",
"script": "/home/patrikx3/.p3x-ramdisk"
}
Final commands:
--------------------------
1) You only have to do it once, if you haven't done it before
echo "tmpfs /home/patrikx3/ramdisk tmpfs gid=10000,uid=10000,size=4096M 0 0" | sudo tee -a /etc/fstab
sudo mount -a
--------------------------
2) verify that ramdisk is working, see it here
df -h
--------------------------
3) if everything is ok, start the persistent ramdisk
sudo p3x-ramdisk start $USER
patrikx3@laptop:~/ramdisk/.p3x-ramdik-persistence/content/.p3x-ramdisk-link/Projects/patrikx3/ramdisk$
```
## Watching the RAM disk
```bash
p3x-ramdisk watch $USER
```
```text
Filesystem Size Used Avail Use% Mounted on
tmpfs 4,0G 2,0G 2,1G 50% /home/patrikx3/ramdisk
total used free shared buff/cache available
Mem: 31G 3,3G 18G 2,0G 9,8G 25G
Swap: 8,0G 0B 8,0G
Load: 2018-05-27 09:01:49 2018-05-27 09:01:56 0 minutes 7 seconds
Save: 2018-05-27 09:20:00 2018-05-27 09:20:16 0 minutes 16 seconds
2018-05-27 09:20:00: timer save, ramdisk to current
2018-05-27 09:20:00: timer save /home/patrikx3/ramdisk/.p3x-ramdik-persistence/content to /home/patrikx3/ramdisk-persistent/current
2018-05-27 09:20:16: timer saved
2018-05-27 09:20:16: timer save done
2018-05-27 09:20:16: timer 0 minutes 16 seconds
5/27/2018, 9:24:45 AM | Persistence 20 minutes | Watch 1 second
```
# LOGS
``` /home/username/ramdisk-persistent/ramdisk-persistent.log ```
``` /home/username/ramdisk-persistent/update-at-load.log ```
``` /home/username/ramdisk-persistent/update-at-save.log ```
## LOG info
```text
2018-05-06 02:57:37: boot loading
2018-05-06 02:57:37: boot load /home/patrikx3/ramdisk-persistent/current to /home/patrikx3/ramdisk/.p3x-ramdik-persistence/content
2018-05-06 02:57:47: boot loaded
2018-05-06 02:57:47: boot link
2018-05-06 02:57:47: boot link /home/patrikx3/ramdisk/.p3x-ramdisk-persistence/content/.IntelliJIdea2018.3 to /home/patrikx3/.IntelliJIdea2018.3
2018-05-06 02:57:47: boot link /home/patrikx3/ramdisk/.p3x-ramdisk-persistence/content/Projects to /home/patrikx3/Projects
2018-05-06 02:57:47: boot link done
2018-05-06 02:57:47: boot 0 minutes 10 seconds
2018-05-06 02:57:47: timer save
2018-05-06 02:57:47: timer save, current to previous
2018-05-06 02:57:47: timer save /home/patrikx3/ramdisk-persistent/current to /home/patrikx3/ramdisk-persistent/previous
2018-05-06 02:57:50: timer saved
2018-05-06 02:57:50: timer save, ramdisk to current
2018-05-06 02:57:50: timer save /home/patrikx3/ramdisk/.p3x-ramdisk-persistence/content to /home/patrikx3/ramdisk-persistent/current
2018-05-06 02:57:53: timer saved
2018-05-06 02:57:53: timer save done
2018-05-06 02:57:53: timer 0 minutes 6 seconds
```
## LOG Update
```text
2018-05-06 03:31:51
2018-05-06 03:31:57
0 minutes 6 seconds
```
# Thunder ramdisk persistence
```text
patrikx3@workstation ~/ramdisk-persistent/current/.p3x-ramdisk-link $ ll
total 32
drwxr-xr-x 8 patrikx3 patrikx3 4096 May 7 13:04 ./
drwxr-xr-x 3 patrikx3 patrikx3 4096 May 7 13:02 ../
drwxr-xr-x 4 patrikx3 patrikx3 4096 Apr 25 17:51 .IntelliJIdea2018.3/
patrikx3@workstation ~/ramdisk-persistent/current/.p3x-ramdisk-link $
```
[//]: #@corifeus-footer
---
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All my domains ([patrikx3.com](https://patrikx3.com) and [corifeus.com](https://corifeus.com)) could have minor errors, since I am developing in my free time. However, it is usually stable.
**Note about versioning:** Versions are cut in Major.Minor.Patch schema. Major is always the current year. Minor is either 4 (January - June) or 10 (July - December). Patch is incremental by every build. If there is a breaking change, it should be noted in the readme.
---
[**P3X-RAMDISK**](https://pages.corifeus.com/ramdisk) Build v2019.10.153
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[//]: #@corifeus-footer:end
