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fix: mount SD kaart dynamisch via udev %k i.p.v. hardcoded UUID

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dashcam-transfer-mount.sh mountte altijd /dev/disk/by-uuid/00D3-7715.
Een geherformatteerde of andere kaart heeft een ander filesystem UUID,
waardoor de mount faalde (TRIGGER ERROR) en de transfer nooit startte.

De udev rule geeft nu het kernel device (%k) door; de helper mount dat
device dynamisch. Werkt ongeacht het FS-UUID van de kaart.
This commit is contained in:
Eddy de Vink 2026-08-06 20:02:48 +02:00
commit 8ef7078ba4
2 changed files with 40 additions and 21 deletions
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20
README.md
View file

@ -8,9 +8,9 @@ organisatie per datum en camera-positie (front/back). Draait op de **nextcloud**
``` ```
SD-kaart insteken SD-kaart insteken
→ udev detecteert vendor:product (14cd:1212 of 05e3:0751) → udev detecteert vendor:product (14cd:1212 of 05e3:0751)
→ systemd-run start /usr/local/bin/dashcam-transfer-mount.sh → systemd-run start /usr/local/bin/dashcam-transfer-mount %k
→ wacht tot /dev/disk/by-uuid/00D3-7715 verschijnt (max 60s) → wacht tot /dev/sdX1 verschijnt (max 60s)
→ mount UUID op /mnt/sdcard (uid=1000, exfat) → mount apparaat dynamisch op /mnt/sdcard (uid=1000, exfat)
→ systemctl start dashcam-transfer.service → systemctl start dashcam-transfer.service
→ /usr/local/bin/dashcam-transfer.py → /usr/local/bin/dashcam-transfer.py
1. Check mounts (/mnt/sdcard, /mnt/ultratouch) 1. Check mounts (/mnt/sdcard, /mnt/ultratouch)
@ -25,10 +25,11 @@ SD-kaart insteken
| Component | Mount | Device | Doel | | Component | Mount | Device | Doel |
|---|---|---|---| |---|---|---|---|
| USB-SSD (4TB, Seagate Ultra Touch) | `/mnt/ultratouch` | `/dev/disk/by-uuid/3027-8ECA` | Opslag | | USB-SSD (4TB, Seagate Ultra Touch) | `/mnt/ultratouch` | `/dev/disk/by-uuid/3027-8ECA` | Opslag |
| SD-kaart (via USB reader) | `/mnt/sdcard` | `/dev/disk/by-uuid/00D3-7715` | Bron | | SD-kaart (via USB reader) | `/mnt/sdcard` | dynamisch via udev `%k` | Bron |
SSD wordt gemount via systemd `.automount` unit (permanent aangesloten). SSD wordt gemount via systemd `.automount` unit (permanent aangesloten).
SD-kaart wordt gemount door `dashcam-transfer-mount.sh` na udev trigger. SD-kaart wordt gemount door `dashcam-transfer-mount.sh` na udev trigger, met het
kernel-device (b.v. `sde1`) als argument — zo werkt het ongeacht het filesystem UUID.
## Bestandsstructuur ## Bestandsstructuur
@ -79,13 +80,16 @@ De container: `docker-compose.yml` in `/home/aiaiaiaiagent/wwebjs-api/`.
### Udev rule (`/etc/udev/rules.d/99-dashcam-trigger.rules`) ### Udev rule (`/etc/udev/rules.d/99-dashcam-trigger.rules`)
```udev ```udev
ACTION=="add", SUBSYSTEM=="block", KERNEL=="sd*[0-9]", ENV{ID_VENDOR_ID}=="14cd", ENV{ID_MODEL_ID}=="1212", RUN+="/usr/bin/systemd-run --no-block --collect /usr/local/bin/dashcam-transfer-mount" ACTION=="add", SUBSYSTEM=="block", KERNEL=="sd*[0-9]", ENV{ID_VENDOR_ID}=="14cd", ENV{ID_MODEL_ID}=="1212", RUN+="/usr/bin/systemd-run --no-block --collect /usr/local/bin/dashcam-transfer-mount %k"
ACTION=="add", SUBSYSTEM=="block", KERNEL=="sd*[0-9]", ENV{ID_VENDOR_ID}=="05e3", ENV{ID_MODEL_ID}=="0751", RUN+="/usr/bin/systemd-run --no-block --collect /usr/local/bin/dashcam-transfer-mount" ACTION=="add", SUBSYSTEM=="block", KERNEL=="sd*[0-9]", ENV{ID_VENDOR_ID}=="05e3", ENV{ID_MODEL_ID}=="0751", RUN+="/usr/bin/systemd-run --no-block --collect /usr/local/bin/dashcam-transfer-mount %k"
``` ```
`%k` geeft het kernel device (b.v. `sde1`) door aan het mount script.
### Mount script (`/usr/local/bin/dashcam-transfer-mount.sh`) ### Mount script (`/usr/local/bin/dashcam-transfer-mount.sh`)
Wacht tot de UUID beschikbaar is, unmount eventuele stale mounts, mount de SD-kaart en start de service. Wacht tot het doorgegeven device beschikbaar is, unmount eventuele stale mounts,
mount de SD-kaart en start de service.
### Systemd service (`/etc/systemd/system/dashcam-transfer.service`) ### Systemd service (`/etc/systemd/system/dashcam-transfer.service`)

31
dashcam-transfer-mount.sh
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@ -1,24 +1,39 @@
#!/bin/bash #!/bin/bash
# Mount SD card by UUID and start dashcam transfer. # Mount SD card and start dashcam transfer.
# Called by udev rule 99-dashcam-trigger.rules via systemd-run. # Called by udev rule 99-dashcam-trigger.rules via systemd-run.
# systemd-run is used (not direct udev exec) because udev context # systemd-run is used (not direct udev exec) because udev context
# lacks mount/umount permissions on Fedora with SELinux enforcing. # lacks mount/umount permissions on Fedora with SELinux enforcing.
UUID=/dev/disk/by-uuid/00D3-7715 #
logger -t dashcam-transfer Trigger: SD card detected # The udev rule passes the kernel name (e.g. "sde1") as $1 so the
# device is mounted dynamically, independent of its filesystem UUID.
DEV=${1:+/dev/$1}
logger -t dashcam-transfer "Trigger: SD card detected ($DEV)"
if [ -n "$1" ]; then
for ((i=0; i<60; i++)); do for ((i=0; i<60; i++)); do
if [ -e "$UUID" ]; then if [ -e "$DEV" ]; then
logger -t dashcam-transfer Trigger: device ready after ${i}s logger -t dashcam-transfer "Trigger: device ready after ${i}s"
break break
fi fi
sleep 1 sleep 1
done done
else
UUID=$(lsblk -rno UUID /dev/sde1 2>/dev/null)
DEV=/dev/disk/by-uuid/$UUID
for ((i=0; i<60; i++)); do
if [ -e "$DEV" ]; then
logger -t dashcam-transfer "Trigger: device ready after ${i}s"
break
fi
sleep 1
done
fi
while mountpoint -q /mnt/sdcard 2>/dev/null; do while mountpoint -q /mnt/sdcard 2>/dev/null; do
umount /mnt/sdcard 2>/dev/null || break umount /mnt/sdcard 2>/dev/null || break
done done
mount "$UUID" /mnt/sdcard -o uid=1000,gid=1000,fmask=0000,dmask=0000 2>/dev/null mount "$DEV" /mnt/sdcard -o uid=1000,gid=1000,fmask=0000,dmask=0000
if [ $? -eq 0 ]; then if [ $? -eq 0 ]; then
logger -t dashcam-transfer Trigger: mounted, starting transfer logger -t dashcam-transfer "Trigger: mounted, starting transfer"
systemctl start dashcam-transfer systemctl start dashcam-transfer
else else
logger -t dashcam-transfer TRIGGER ERROR: mount failed logger -t dashcam-transfer "TRIGGER ERROR: mount failed"
fi fi