[arm-allstar] Hamvoip Operational Question

[David McGough]

George,

During normal operation there is minimal write traffic to the SD card, 
when running the HamVoIP release.

I've never had an SD card fail, even on my development systems, which do
have a lot more writes to the cards.  I've got cards from the BeagleBone
Black era that still work fine.

I will comment that I have periodically replaced older, slower SD cards
on some of my original systems with much faster, current SD cards. Again,
this wasn't due to failures, just my taking advantage of newer, faster
memory technology.

Here are a couple more comments about SD cards used on Raspberry Pi 
systems:

First, make certain you've got a robust 5V power supply! If you're having
have SD card corruption or other problems, it's probably the power
supply causing this!!!!!!!

Second, many HamVoIP users these days are opening their RPi systems up 
fully to the Internet. So, for example, ssh on port 222 can be accessed 
by anyone via the Internet. As long as you've got a good password, these 
hackers aren't going to gain access. But, they can (and do!) fill up the 
/var/log filesystem and can slow down the network speed. This is why some 
users say their systems get slower and slower and then they reboot and it 
works fine again---the /var/log filesystem is a RAM drive and gets 
"cleaned up" if you reboot, so it's empty again for a while. Then, the 
hackers fill it back up again.


73, David KB4FXC




On Mon, 18 May 2020, "George via ARM-allstar" wrote:

> I am curious about one area of Hamvoip operation. How often is 
something written to the SD Card (other than operator changes to the 
files or updates)?  For example, the logs, the list of stations 
currently on-air, etc.  Are these and other items in memory and not 
written out to the SD card?
Thanks for any clarifications.



Regards,
George, NJ3HRedmond, Oregon USA
DMR ID:Â  3141315
AllStar Node:Â  49246EchoLink Node NJ3H-L:Â  3135
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