OMV Does not work with Raspberry Pi RTC

After trying in vain to find ways around the time-loss problem that the Raspberry Pi has, I finally bought an RTC for my Raspberry Pi. I've installed it and followed the instructions on this page, but for some reason, when I reboot, the system time is not acquired from the RTC, and I instead receive I random time setting as I did before installing the RTC. What's going on here? What can I go to fix this?

If I execute "hwclock -s" in the terminal, the time is changed to match, so the RTC is working, but it is not working on boot.

Zitat von tekkb

Follow this guide...

RPi 2(RTC module): from unruly Stepchild to Wunderkind

Great! Thanks! I am about to carry out your instructions, but before I do, can you tell if the RRDTool graph corruption issue is fixed when you do this?

Zitat von tekkb

There are instructions in the guide how to clear the cache... You will see them.

Great! Your instructions are the best I've found for how to deal with this so far! One question though: When I execute update-rc.d -f fake-hwclock remove, am I supposed to get a message saying update-rc.d: using dependency based boot sequencing? I have a feeling that that is incorrect. I used apt-get autoremove fake-hwclock instead. Is there a difference?

I managed to get everything done correctly, but I am still having graph problems.

After I reboot, they still all go blank.

This is the graph several minutes after I refresh the cache:

This is what I see after a reboot. Where is the garbage data coming from? I've noticed that it's the same every time.

If I force a refresh, I get this:

I understand that data cannot be collected when the machine is off, but that's not the problem.

The problem that I am having is that when I restart the machine, I lose all of my data, and graph ends up looking like this:

Take note of the "Last Update" time on this graph. If I force a refresh, all previously collected data disappears.

Here's what I did.

First, I executed these commands.

service collectd stop
service rrdcached stop
rm -r /var/lib/rrdcached/db/localhost
rm /var/lib/rrdcached/journal/*
service collectd start
service rrdcached start

Then, I refreshed the graph after several minutes.

After I reboot the Raspberry Pi, the graph looks like this and the "last updated" time is wrong.

If I force a graph refresh when I see this, the graph ends up looking like this. Notice that the "Last Updated" time is now correct, but there's no data.

The only way to get the graph working again is to clear the cache again, but as soon as I reboot, I see this again with the random data and wrong update time:

Also, I am using the flash memory plugin.

I've uninstalled the Flash Memory plugin, erased the cache again, and rebooted, and the graphs are still messed up. I tried erasing the cache and rebooting a second time, and the same thing still happens.

Zitat von tekkb

I would have to look at the old post I mentioned. Alternative would be to start from scratch and setup the RTC module before installing the flash memory plugin. I'll try to find the old post when I get some time.

Look at post by genekh. May be related to your issue as well. I'll read it again later.

Is it possible that system log entries and corrupt rrdcached data are included in the OMV boot image

Thanks! That seems to have solved my problem!