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# 💾 Linux RAM disk persistent with Systemd timer, service and suspend v2020.4.108
**Bugs are evident™ - MATRIX️**
### Node Version Requirement
```
>=12.13.0
```
### Built on Node
```
v12.16.1
```
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/{{USER}}/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}}/.IntelliJIdea2019.2 /home/{{USER}}/ramdisk-persistent/current/.p3x-ramdisk-link
# backup
mkdir -p /home/{{USER}}/backup
mv /home/{{USER}}/.IntelliJIdea2019.2 /home/{{USER}}/backup/
# need to delete the originals, since they become symlinks
rm -rf /home/{{USER}}/.IntelliJIdea2019.2
ln -s /home/{{USER}}/ramdisk-persistent/current/.p3x-ramdisk-link/.IntelliJIdea2019.2 /home/{{USER}}/.IntelliJIdea2019.2
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/{{USER}}/ramdisk-persistent/ramdisk-persistent.log ```
``` /home/{{USER}}/ramdisk-persistent/update-at-load.log ```
``` /home/{{USER}}/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
---
🙏 This is an open-source project. Star this repository, if you like it, or even donate to maintain the servers and the development. Thank you so much!
Possible, this server, rarely, is down, please, hang on for 15-30 minutes and the server will be back up.
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 v2020.4.108
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[//]: #@corifeus-footer:end
