The error often returns after reboot. Create a systemd service:
# /etc/systemd/system/lpro-ramdisk-register.service [Unit] Description=Register ramdisks with Lpro AIO After=local-fs.target[Service] Type=oneshot ExecStart=/usr/local/bin/lpro-register-ram.sh RemainAfterExit=yes
[Install] WantedBy=multi-user.target
Script /usr/local/bin/lpro-register-ram.sh: lpro aio ramdisk device not registered better
#!/bin/bash
modprobe brd
sleep 1
for ram in /dev/ram*; do
echo lpro > /sys/block/$(basename $ram)/queue/scheduler
echo 1 > /sys/block/$(basename $ram)/queue/iosched/lpro_aio_enabled
done
echo "Lpro AIO ramdisk registration completed."
Follow these steps in order. Do not skip the verification commands.
sudo dnf upgrade kernel
The kernel may attempt to register /dev/ram0 through the LPRO interface, but that device name is already in use by the standard brd (block ramdisk) driver. The conflict prevents registration.
If you have followed all steps and still see "lpro aio ramdisk device not registered better", capture forensic data: The error often returns after reboot