pageauc
commented
3 years ago I will write a wiki on doing this. Currently I use small SSD drives for external storage eg https://www.amazon.ca/gp/product/B07GXHPR6R/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
I move all of the ~/speed-camera folder to the SSD and create a soft link to the mount location. This allows moving the drive to another RPI and not loosing any data or configuration if the rpi system sd card fails,
Step 1 Install and mount external storage device per https://www.raspberrypi.org/documentation/computers/configuration.html#external-storage-configuration I usually mount to /home/pi/ssd-mnt but you can mount to a folder of your choice. For this example I will assume mount point is ssd-mnt
sudo apt update
sudo apt upgrade sudo apt install ntfs-3g # this should already be installed
plug in usb drive
Here is an example of one of my ssd drives plugged in
sudo blkid
/dev/mmcblk0p1: LABEL_FATBOOT="boot" LABEL="boot" UUID="6284-658D" TYPE="vfat" PARTUUID="254cd2b1-01 /dev/mmcblk0p2: LABEL="rootfs" UUID="3a324232-335f-4617-84c3-d4889840dc93" TYPE="ext4" PARTUUID="254cd2b1-02" /dev/mmcblk0: PTUUID="254cd2b1" PTTYPE="dos" /dev/sda1: UUID="7476C11B76C0DECC" TYPE="ntfs" PARTUUID="cc7444a5-01"
My ssd drive is located at /dev/sda1 per above. Below is an example of my /etc/fstab entry eg
sudo nano /etc/fstab
ctrl-x y to save changes. Note you will have to use disk uuid for your drive or just use /dev/sda1 but uuid is safer
UUID=7476C11B76C0DECC /home/pi/ssd-mnt ntfs-3g
defaults,user,uid=1000,gid=1000,nofail,noatime 0 0
You can reboot or just mount manually per
sudo mount ssd-mnt
Make sure you can access the ssd drive and everything works OK including permissions. If you have problems review the rpi org doc
Step 2 Stop speed camera and webserver using menubox.sh or the shell scripts Move speed-camera folder to external storage device and create symbolic link per steps below Note this could take some time depending on size of media folder
cd ~
mv speed-camera /home/pi/ssd-mnt/ ls -l ssd-mnt ln -s /home/pi/ssd-mnt/speed-camera speed-camera
ls -l speed-camera
speed camera link should be owned by pi per eg below
lrwxrwxrwx 1 pi pi 29 Aug 12 09:37 speed-camera -> /home/pi/ssd-mnt/speed-camera
double check permissions in speed-camera
cd ~/speed-camera ls -l
You should see all files and folders owned by pi user. If not check your fstab mount
Step 3 Restart speed camera using menubox.sh or the specific shell scripts.
Let me know your progress This should also work on any ntfs storage device. In some cases I reformat drive as ext4 using gparted utilit
I will make this a wiki. Please provide feedback in case I have missed something.
Claude
On Thu, Aug 12, 2021 at 6:06 AM peterb99 @.***> wrote:
I would like to keep the media directory and it contents on a separate mounted file system to prevent the system from lockup when the media images fill up the root file system and to reduce wear and tear off the root Sd card in the pi.
I've tried to mount a separate file system on $HOME/speed-cam/media, but ran in file and directory access permissions issues with that. Look like a mounted file system at the root of the main system is needed.
Can a variable be added to specify the media full directory path like /speed/media , where /speed is the mount point of the extra file system?
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peterb99
I would like to keep the media directory and it contents on a separate mounted file system to prevent the system from lockup when the media images fill up the root file system and to reduce wear and tear off the root Sd card in the pi.
I've tried to mount a separate file system on $HOME/speed-cam/media, but ran in file and directory access permissions issues with that. Look like a mounted file system at the root of the main system is needed.
Can a variable be added to specify the media full directory path like /speed/media , where /speed is the mount point of the extra file system?