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# 💾 RAM disk persistent with Systemd timer, service and suspend v2019.1.8-6
🙏 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!
I run my own server with dynamic IP address, so, it may happen, that the server can not be reachable for about max 15 minutes, due to nature of the dynamic DNS. The server may also be unreachable, when I backup the SSD with Clonzilla (very rarely) or an electrical issue (but this should not happen again). When the server is down, please hang on for 15-30 minutes and the server will be back up.
All my domains (patrikx3.com and corifeus.com) could have errors, since I am developing in my free time. However, it is usually stable.
**Bugs are evident™ - MATRIX️**
### Node Version Requirement
```
>=10.13.0
```
### Built on Node
```
v11.6.0
```
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!
```
* Requires tmpfs, bash, fstab, rsync, memory :)
* Usually, all requirements of every Unix flavor are installed by default
* 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.
# 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 $USER
# Get the output, add to /etc/fstab
echo "tmpfs /home/patrikx3/ramdisk tmpfs gid=10000,uid=10000,size=4096M 0 0" | sudo tee -a /etc/fstab
sudo mount -a
# you should verify the ramdisk is existing now, you might have to reboot
# on linux it can show your settings, like below:
df -h
# if there is an error, you can
sudo p3x-ramdisk stop
# if all good
# STARTUP THE RAMDISK PERSISTENT
sudo p3x-ramdisk start
# you can work like here (this a symlink, so you can't accidentally delete
# so next time boot, it will re-create the symlink ...)
# /home/$USER/ramdisk/p3x-persistence
# SOME DEBUG
p3x-ramdisk watch
# to trigger a savs
p3x-ramdisk save
# 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
# 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/$USER
# if there is nothing in .p3x-ramdisk-link
# no linking is. to test it, you might not need it.
```
## Linkin' in /home
```bash
### //LINKING:START
# LINKING - IS NOT REQUIRED, but is good as a sword :)
p3x-ramdisk save
sudo p3x-ramdisk stop
mkdir -p /home/$USER/ramdisk-persistent/current/.p3x-ramdisk-link
cp -avr /home/$USER/.IntelliJIdea2017.3 /home/$USER/ramdisk-persistent/current/.p3x-ramdisk-link
# backup
mkdir -p /home/$USER/backup
mv /home/$USER/.IntelliJIdea2017.3 /home/username/backup/
# need to delete the originals, since they become symlinks
rm -rf /home/$USER/.IntelliJIdea2017.3
sudo p3x-ramdisk start
### //LINKING:END
```
# Output
## Install
```text
patrikx3@laptop:~/ramdisk/.p3x-ramdik-persistence/content/.p3x-ramdisk-link/Projects/patrikx3/ramdisk$ sudo p3x-ramdisk install patrikx3 -s 6144
2017-05-08 00:30:08: terminal install
2017-05-08 00:30:08: terminal copy
2017-05-08 00:30:08: terminal suspend
2017-05-08 00:30:08: terminal reload services
2017-05-08 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
patrikx3@laptop:~/ramdisk/.p3x-ramdik-persistence/content/.p3x-ramdisk-link/Projects/patrikx3/ramdisk$
```
## Watching the RAM disk
```bash
p3x-ramdisk watch
```
```
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: 2017-05-27 09:01:49 2017-05-27 09:01:56 0 minutes 7 seconds
Save: 2017-05-27 09:20:00 2017-05-27 09:20:16 0 minutes 16 seconds
2017-05-27 09:20:00: timer save, ramdisk to current
2017-05-27 09:20:00: timer save /home/patrikx3/ramdisk/.p3x-ramdik-persistence/content to /home/patrikx3/ramdisk-persistent/current
2017-05-27 09:20:16: timer saved
2017-05-27 09:20:16: timer save done
2017-05-27 09:20:16: timer 0 minutes 16 seconds
5/27/2017, 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
2017-05-06 02:57:37: boot loading
2017-05-06 02:57:37: boot load /home/patrikx3/ramdisk-persistent/current to /home/patrikx3/ramdisk/.p3x-ramdik-persistence/content
2017-05-06 02:57:47: boot loaded
2017-05-06 02:57:47: boot link
2017-05-06 02:57:47: boot link /home/patrikx3/ramdisk/.p3x-ramdisk-persistence/content/.IntelliJIdea2017.3 to /home/patrikx3/.IntelliJIdea2017.3
2017-05-06 02:57:47: boot link /home/patrikx3/ramdisk/.p3x-ramdisk-persistence/content/Projects to /home/patrikx3/Projects
2017-05-06 02:57:47: boot link done
2017-05-06 02:57:47: boot 0 minutes 10 seconds
2017-05-06 02:57:47: timer save
2017-05-06 02:57:47: timer save, current to previous
2017-05-06 02:57:47: timer save /home/patrikx3/ramdisk-persistent/current to /home/patrikx3/ramdisk-persistent/previous
2017-05-06 02:57:50: timer saved
2017-05-06 02:57:50: timer save, ramdisk to current
2017-05-06 02:57:50: timer save /home/patrikx3/ramdisk/.p3x-ramdisk-persistence/content to /home/patrikx3/ramdisk-persistent/current
2017-05-06 02:57:53: timer saved
2017-05-06 02:57:53: timer save done
2017-05-06 02:57:53: timer 0 minutes 6 seconds
```
## LOG Update
```text
2017-05-06 03:31:51
2017-05-06 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 .IntelliJIdea2017.3/
patrikx3@workstation ~/ramdisk-persistent/current/.p3x-ramdisk-link $
```
[//]: #@corifeus-footer
---
[**P3X-RAMDISK**](https://pages.corifeus.com/ramdisk) Build v2019.1.8-6
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## P3X Sponsors
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[//]: #@corifeus-footer:end
