issues with dumpdev in /etc/defaults/rc.conf

JonathanLee

Hello fellow pfSense community members,

Can you please help?

I am having issues with getting my dumpdev device to work on reboots.

It takes when I manually configure it however if I set it in rc.conf it does not list with dumpon -l when I reboot.

Manually setting results in this /dev/null on reboots

How can we manually set this device so it stays with each reboot?

JonathanLee

Cron ...???

@reboot root dumpon /dev/ada0s3b

stephenw10

pfSense doesn't use the FreeBSD rc system so that file does nothing. The dump device is setup at boot when rc.dumpon is run by pfSense-rc.

stephenw10

You could just add it as a shellcmd.

JonathanLee

@stephenw10

What about a cron @reboot root dumpon /dev/ada0s3b or something like that? I mean that should fix it right? Swap on a different /dev/da0 and dump set to save locally. Should work right? It shows when I reboot now YEAH~!~!

Shell Output - swapinfo
Device          512-blocks     Used    Avail Capacity
/dev/da0p1.eli   250066944        0 250066944     0%

Shell Output - dumpon -l
ada0s3b

JonathanLee

@stephenw10

even with me running dumpon and setting it and it showing dumpon -l it does not show rc.dumpon will it still work?

stephenw10

Right presumably because you have moved SWAP to that other format where fails the test. But if the raw command shows it it should work fine.

JonathanLee

@stephenw10
Ok I will be right back I am going to trigger it to test it

sysctl debug.kdb.panic=1

JonathanLee

I am just worried it wont see it because of this program

#!/bin/sh
#
# rc.dumpon
#
# part of pfSense (https://www.pfsense.org)
# Copyright (c) 2004-2013 BSD Perimeter
# Copyright (c) 2013-2016 Electric Sheep Fencing
# Copyright (c) 2014-2023 Rubicon Communications, LLC (Netgate)
# All rights reserved.
#
# Based on src/etc/rc.d/dumpon from FreeBSD
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

dumpon_try()
{
	if /sbin/dumpon "${1}" ; then
		# Make a symlink in devfs for savecore
		echo "Using ${1} for dump device."
		ln -fs "${1}" /dev/dumpdev
		return 0
	fi
	echo "Unable to specify $1 as a dump device."
	return 1
}

# Enable dumpdev so that savecore can see it. Enable it
# early so a crash early in the boot process can be caught.
#
while read dev mp type more ; do
	[ "${type}" = "swap" ] || continue
	[ -c "${dev}" ] || continue
	dumpon_try "${dev}" && works=true
done </etc/fstab
if [ "${works}" != "true" ]; then
	# fstab entries did not work, try swap labels
	for dev in /dev/label/swap*; do
		if [ ! -e "${dev}" ]; then
			continue;
		fi
		dumpon_try "${dev}" && works=true
	done
	if [ "${works}" != "true" ]; then
		echo "No suitable dump device was found." 1>&2
		exit
	fi
fi

will savecore see it...

JonathanLee

@stephenw10

It does not populate I wonder what else is needed

JonathanLee

ln -fs /dev/ada0s3b /dev/dumpdev

I think this linker file is still needed for it to work I need to generate it manually because the program does it only based on fstab

JonathanLee

still no report /var/crash weird I even manual created the link for devdump

JonathanLee

#!/bin/sh
#
# rc.dumpon
#
# part of pfSense (https://www.pfsense.org)
# Copyright (c) 2004-2013 BSD Perimeter
# Copyright (c) 2013-2016 Electric Sheep Fencing
# Copyright (c) 2014-2023 Rubicon Communications, LLC (Netgate)
# All rights reserved.
#
# Based on src/etc/rc.d/dumpon from FreeBSD
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

ln -fs /dev/ada0s3b /dev/dumpdev
echo "OK ADAPTED ADA0S3B ONLINE"
return 0

This might fix it

JonathanLee

@JonathanLee said in issues with dumpdev in /etc/defaults/rc.conf:

sysctl debug.kdb.panic=1

Custom solution

add the cron
copy the rc.dumpon to rc.dumpon.old
add the new info

and it works