Re: vnstat 2.6 - testing

[Matthias Fischer <matthias.fischer@ipfire.org>]

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Hi,

On 22.03.2020 16:32, Arne Fitzenreiter wrote:
> Hi,
> 
> this works not as intended! If you start the vnstatd before creating the 
> ramdisk it
> creates filehandles to the files on the disk so the ramdisk is not used 
> at all.

Thinking of, it you're right! Thanks.

I didn't get any boot messages concerning the ramdisk, so I didn't
thought of that and overlooked it.

How about the other way around?

> How large is the database and how have you created the traffic for the 
> test?

'/var/log/vnstat.db' has now exactly 69632 Bytes - see attachment.

It was created by copying the old interface files
(/var/log/vnstat/.blue0, blue0, .green0, green0, .red0, red0) from my
production machine to my testmachine. That is all it took. 'vnstatd'
imported them at first start.

The other traffic from today was created through copying some *really*
big video files to the testmachine.

> All readed files are put to the cache so it might be normal that the 
> cache is fuller
> after ramdisk mount and copying.

I changed order: I placed 'vnstatd' start and stop routines *behind* the
ramdisk entries (init is attached). Would that be better?

At first look it works as intended...

Best,
Matthias

> Arne
> 
> Am 2020-03-22 14:16, schrieb Matthias Fischer:
>> Hi,
>> 
>> it seems that I found a (fast) solution for starting/stopping 
>> 'vnstatd':
>> 
>> 1. In '/etc/init.d/vnstat' I changed:
>> 
>> start)
>> 	if use_ramdisk; then
>> 		boot_mesg "Mounting vnstat ramdisk..."
>> 		mount_ramdisk "${VNSTATLOG}"
>> 		evaluate_retval
>> 	fi
>> 	;;
>> 
>> To:
>> 
>> start)
>> 	boot_mesg "Starting vnstatd..."
>> 	loadproc /usr/sbin/vnstatd -d --alwaysadd
>> 	sleep 2
>> 	evaluate_retval
>> 
>> 	if use_ramdisk; then
>> 		boot_mesg "Mounting vnstat ramdisk..."
>> 		mount_ramdisk "${VNSTATLOG}"
>> 		evaluate_retval
>> 	fi
>> 	;;
>> 
>> 2. Changed:
>> 
>> stop)
>> 	umount_ramdisk "${VNSTATLOG}"
>> 	;;
>> 
>> To:
>> 
>> stop)
>> 	boot_mesg "Stopping vnstatd..."
>> 	killproc /usr/sbin/vnstatd
>> 	sleep 2
>> 	evaluate_retval
>> 	umount_ramdisk "${VNSTATLOG}"
>> 	;;
>> 
>> Tested. Worked.
>> 
>> But this doesn't check whether the old interface files were imported
>> correctly...
>> 
>> Opinions?
>> 
>> Best,
>> Matthias
>> 
>> P.S.:
>> 'cached memory' is now at 90.42%.
>> Used: 4.18%
>> Buffered: 1.39%
>> Free: 4.00%
>> On a 2 GB / 32bit-machine (offline).
>> Hm.
> 




[-- Attachment #2: vnstat.db --]
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[-- Attachment #3: init_vnstat.txt --]
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#!/bin/sh
# Begin $rc_base/init.d/vnstat

. /etc/sysconfig/rc
. $rc_functions

eval $(/usr/local/bin/readhash /var/ipfire/main/settings)

if [ "$VNSTATLOG" = '' ]; then
	VNSTATLOG=/var/log/vnstat
fi

case "$1" in
	start)
		if use_ramdisk; then
			boot_mesg "Mounting vnstat ramdisk..."
			mount_ramdisk "${VNSTATLOG}"
			evaluate_retval
		fi

		boot_mesg "Starting vnstatd..."
		loadproc /usr/sbin/vnstatd -d --alwaysadd
		sleep 2
		evaluate_retval
		;;
	stop)
		umount_ramdisk "${VNSTATLOG}"

		boot_mesg "Stopping vnstatd..."
		killproc /usr/sbin/vnstatd
		sleep 2
		evaluate_retval
		;;

	backup)
		# Backup all data if ramdisk is used
		if mountpoint "${RRDLOG}" &>/dev/null; then
			${0} restart
		fi
		;;

	*)
		echo "Usage: $0 {start|stop|backup}"
		exit 1
		;;
esac

# End $rc_base/init.d/vnstat