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RAM Disk

Setup

Mount the directory with the tmpfs file system.

bash
sudo mount -t tmpfs -o size=8G,defaults,mode=0775,uid=$(id -u),gid=$(id -g) ramdisk /path/to/dir/

sudo mount -t tmpfs -o size=8G,defaults,mode=0775,uid=$(id -u),gid=$(id -g) ramdisk /path/to/dir/
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See that folder is successfully mounted.

bash
mount | tail -n 1

mount | tail -n 1
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To unmount the RAM disk use.

bash
sudo umount /path/to/dir

sudo umount /path/to/dir
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Incremental backups

Create rsnapshot.conf config for hourly backups

config_version	1.2
cmd_cp			/bin/cp
cmd_rm			/bin/rm
cmd_rsync		/usr/bin/rsync
cmd_logger		/usr/bin/logger

# Backup intervals
retain hourly	36

# Logging
verbose			2
loglevel		3
logfile			/path/to/rsnapshot.log

# Lock file
lockfile		/path/to/rsnapshot.pid

# Directory where snapshots will be stored
snapshot_root	/path/to/backups/

backup	/path/to/dir/	localhost/

config_version	1.2
cmd_cp			/bin/cp
cmd_rm			/bin/rm
cmd_rsync		/usr/bin/rsync
cmd_logger		/usr/bin/logger

# Backup intervals
retain hourly	36

# Logging
verbose			2
loglevel		3
logfile			/path/to/rsnapshot.log

# Lock file
lockfile		/path/to/rsnapshot.pid

# Directory where snapshots will be stored
snapshot_root	/path/to/backups/

backup	/path/to/dir/	localhost/
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Create systemd service config called rsnapshot-ram-disk.service

ini
[Unit]
Description=RAM disk backup

[Service]
Type=oneshot
Nice=19
IOSchedulingClass=idle
ExecStart=/usr/bin/rsnapshot -c /path/to/rsnapshot.conf hourly

[Unit]
Description=RAM disk backup

[Service]
Type=oneshot
Nice=19
IOSchedulingClass=idle
ExecStart=/usr/bin/rsnapshot -c /path/to/rsnapshot.conf hourly
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Create systemd timer config called rsnapshot-ram-disk.timer

ini
[Unit]
Description=RAM disk hourly backup

[Timer]
# Every hour 10 minutes before even
OnCalendar=*-*-* *:00:50
Persistent=true
Unit=rsnapshot-ram-disk.service

[Install]
WantedBy=timers.target

[Unit]
Description=RAM disk hourly backup

[Timer]
# Every hour 10 minutes before even
OnCalendar=*-*-* *:00:50
Persistent=true
Unit=rsnapshot-ram-disk.service

[Install]
WantedBy=timers.target
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Enable and start the timer

bash
systemctl enable --now rsnapshot-ram-disk.timer

systemctl enable --now rsnapshot-ram-disk.timer
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