|
Re: Backup recovery
Mark Griffith
I will agree that the SD card can be considered a weak point, but it is not nearly as much of an issue that many people say. I have been using these Raspberry Pi machines since they were first introduced. I have a Pi 4 here that I use as a development computer. The 32GB SD card in there first started out on an original Pi, then a Pi2, then a Pi3, and now a Pi4. I have written complete images to it may times, updated software, installed and removed software packages, everything that you can do with a storage device on a Linux machine. That same SD card still is working fine after nearly 5 years of constant use. And constant means it runs software on a constant basis, doing various things, and I usually login to it once a day to look at something or make a small adjustment to my software. It always works. I backup the software files on there that I want to keep as often as I think about it, and pull the card from the Pi and do an image backup once a month or so. If it failed for some reason, I might loose a few things that I could quickly restore from memory, but not much. I could setup another Pi as a backup server and mirror to two hourly, but I'm not that concerned. Sure, some day it will fail. But if you use a Class 10 SD card, you will probably have years of use with it, like I have. Class 10 cards are not just for speedy reads and writes, but they have a means to deal with dead bits and still work. However, if you want to add a hard disk to the Pi, or even a thumb drive and run off that, you have every right to do as you see fit. More power to you. I will point out that up to now, you still need an SD card to actually boot the Pi, and then it can switch to another device. The Pi 4 is supposed to have a feature to boot directly from another device, but I don't think it made it into the firmware yet. Just my two cents. Mark KD0QYN The SD card is a weak point as they were never designed to run high levels of read write activity over long periods of time. I have moved all my Pi's to a usb connected ssd and no longer boot from or use an SD card There are plenty of guides on YouTube on how to do this.
|
|||||||||
|
|
|||||||||
|
Re: Backup recovery
Sorry I forgot this thread I have not set up a sig.
Allen Higgins KE8KZO
|
|||||||||
|
|
|||||||||
|
Re: Backup recovery
Matt,
If you are correct about the SD card being a weak point I was wondering I have left over from some of my projects about 7 Transcend 2.5 SATA SSD 32Gig drives. Do you think I can use one of these for the boot drive and let it access the SSD drive which is pretty fast? Where are these Utubes located?
|
|||||||||
|
|
|||||||||
|
Re: Backup recovery
Matt 9V1MH/VK3AMH/YF2AAH
The SD card is a weak point as they were never designed to run high levels of read write activity over long periods of time.
I have moved all my Pi's to a usb connected ssd and no longer boot from or use an SD card There are plenty of guides on YouTube on how to do this.
|
|||||||||
|
|
|||||||||
|
Re: Backup recovery
Your best bet is just to regularly backup the entire root directory from the live filesystem. Rsync is the tool for the job.... This link should get you started... Then just backup regularly to a network drive.
On Mon, Apr 6, 2020, 4:00 PM Bo W4GHV <bobarr@...> wrote: Our little Pi can die in SO MANY WAYS.
|
|||||||||
|
|
|||||||||
|
Re: Backup recovery
Mark Griffith
Bo, The interesting thing about Linux is there are literally HUNDREDS of files that must be just right for everything to work. Trying to fix a non-booting system by figuring out what files need to be corrected would be impossible to do on a SD card that got corrupted. If you make a habit of doing that, you won't be caught. You should also be careful what changes you make on your system. If you are not EXACTLY SURE what the result will be, don't make any changes. There is a reason why you login as the user "pi". Non-root users can't make dangerous changes to the system files. Becoming root to do things like that is asking for trouble. Just my 2 cents as a 30+ year Unix/Linux systems administrator and developer. Mark KD0QYN The only real answer is backup, backups, backup.
On Monday, April 6, 2020, 3:00:20 PM CDT, Bo W4GHV <bobarr@...> wrote:
Our little Pi can die in SO MANY WAYS. One litle mistake and its toast. I make lots of changes, have a bad short term memory and forget to take notes. I'm going to work on the note taking. Fairly good at having backup images, but not always. Question: Is there a list of files that can be checked or repaired easily? How do you access the files on other than the boot directory which is readable on a PC. The big partition is unreadable on a PC. Perhaps a list of all the files associated with boot up would be helpful Any help appreciated. -- 73, Bo W4GHV since '54
|
|||||||||
|
|
|||||||||
|
Backup recovery
Our little Pi can die in SO MANY WAYS.
One litle mistake and its toast. I make lots of changes, have a bad short term memory and forget to take notes. I'm going to work on the note taking. Fairly good at having backup images, but not always. Question: Is there a list of files that can be checked or repaired easily? How do you access the files on other than the boot directory which is readable on a PC. The big partition is unreadable on a PC. Perhaps a list of all the files associated with boot up would be helpful Any help appreciated. -- 73, Bo W4GHV since '54
|
|||||||||
|
|
|||||||||
|
Re: APRS-IS passes weather, RF does not
I have aprx sending weather via RF. So it appears that it is not the tnc, rather it's the software. I will let the author of YAAC know.
|
|||||||||
|
|
|||||||||
|
Re: Looking for a good power supply that will handle a load
Mack Edmonson <mackedmonson@...>
Voltage drop across the power connector also.
toggle quoted messageShow quoted text
Mack W4ENN
On Mar 30, 2020, at 10:44 PM, Bo W4GHV <bobarr@...> wrote:
|
|||||||||
|
|
|||||||||
|
Re: Looking for a good power supply that will handle a load
Ray Cadmus
Try canakit.com. I've bought a couple of their full sets but they offer bits and pieces as well. Just works. Regards, Ray W9EUM
On Mon, Mar 30, 2020 at 10:44 PM Bo W4GHV <bobarr@...> wrote: I found the problem to be the voltage drop in the usb cable. I tried several until I found one that put at least 4.7v at the pi. The wire in those cables is tiny.
|
|||||||||
|
|
|||||||||
|
Re: Looking for a good power supply that will handle a load
I found the problem to be the voltage drop in the usb cable. I tried several until I found one that put at least 4.7v at the pi. The wire in those cables is tiny.
-- 73, Bo W4GHV since '54
|
|||||||||
|
|
|||||||||
|
Re: APRS-IS passes weather, RF does not
Direwolf uses wxnow.txt
On Mon, Mar 30, 2020, 12:19 PM Bill WA4OPQ <wa4opq@...> wrote:
|
|||||||||
|
|
|||||||||
|
Re: APRS-IS passes weather, RF does not
Max, Thanks for the idea. I think that's the way to really know what's going on. I used to have easy access to logic analyzers and quite an assortment of test equipment. Then I retired and moved away. <sigh>
|
|||||||||
|
|
|||||||||
|
Re: APRS-IS passes weather, RF does not
Max
A small logic analyzer would be almost perfect connected to the serial signal from the pi going to the tnc. You still have to do some manual decoding but the payload of a kiss frame is in plain text. The analyzer I used was the smallest one made by Saleae . Using this allowed me to determine at least where the problem was. If this is on a Pi4 then configure one of the extra serial ports (I think it has five or six but only four a usable at a time due to other conflicts) and connect the output of the serial port connected to the tnc to the input of the extra serial port, then run one of the serial decoders to show the hex and ascii values of your data. Even if you don't know what you're looking at, you should notice a big difference in a good / bad frame. I currently have one of the small bluetooth to serial converters connected much the same way to my pi/tncPi. I connect to it using a table and run AprsDroid. By moving one wire I can see the output of the tnc or the Pi but not both. Maybe I at least gave you some ideas. Max KG4PID
On Monday, March 30, 2020, 11:19:43 AM CDT, Bill WA4OPQ <wa4opq@...> wrote:
Another couple of days of troubleshooting shows the following: 1) It might be the TNC or it might be the APRS client (YAAC). I need to find another client that uses wxnow.txt to determine. 2) It only affects the transmit, so if I put the 9k6 TNC on the iGate and the Pi-TNC on the remote digipeater the data makes it to APRS-IS. 3) However, this workaround is not reliable. The weather data makes it through about 60% of the time. That's a whole new can of worms.
|
|||||||||
|
|
|||||||||
|
Re: APRS-IS passes weather, RF does not
Another couple of days of troubleshooting shows the following: 1) It might be the TNC or it might be the APRS client (YAAC). I need to find another client that uses wxnow.txt to determine. 2) It only affects the transmit, so if I put the 9k6 TNC on the iGate and the Pi-TNC on the remote digipeater the data makes it to APRS-IS. 3) However, this workaround is not reliable. The weather data makes it through about 60% of the time. That's a whole new can of worms.
|
|||||||||
|
|
|||||||||
|
Re: Back Pi Image and Clone SD Card
Max
I remember reading a post written by an ex Microsoft QA Tester. His said the company had almost completely eliminated QA. We all became the testers. Max KG4PID
On Monday, March 30, 2020, 08:22:58 AM CDT, Walter <w9kjo@...> wrote:
On Sun, Mar 29, 2020 at 08:50 AM, Mike Erstad wrote: Walter you sound like me..... I was a certified Apple Technician for many years but also had to service PC's for my job.... My Windows 7 started locking and freezing up so I found the CD's that came with it and they were Windows 8.... Installed and ended up with these great big colored icons to do different things...after figuring out how to make it look more like windows 7 I was much happier and it works very well now...If it were only the learning curve. The big problem with Windows 10 are that the updates keep affecting things in such negative ways. Windows 10 needs to get themselves under control. They just have way too many engineers and clearly no accountability. When you post your problem on the Windows 10 forum windows people never respond its all volunteers and the volunteers usually give you bad info. -- In Christ, Until He Come, Perhaps Today . . . 73 Walter Huyck W9KJO
|
|||||||||
|
|
|||||||||
|
Re: Back Pi Image and Clone SD Card
Chuck M
If you have a 3D printer available, consider something like this for storing micro SD cards.
toggle quoted messageShow quoted text
Micro SD Card Holder by bgill
Printed a different one initially but may give this one a try. I use a Sharpie to ID my cards with a letter, then keep a notebook to log what's on each card. 73s, Chuck KD9DVB
|
|||||||||
|
|
|||||||||
|
Re: Back Pi Image and Clone SD Card
Walter
On Sun, Mar 29, 2020 at 08:50 AM, Mike Erstad wrote:
Walter you sound like me..... I was a certified Apple Technician for many years but also had to service PC's for my job.... My Windows 7 started locking and freezing up so I found the CD's that came with it and they were Windows 8.... Installed and ended up with these great big colored icons to do different things...after figuring out how to make it look more like windows 7 I was much happier and it works very well now...If it were only the learning curve. The big problem with Windows 10 are that the updates keep affecting things in such negative ways. Windows 10 needs to get themselves under control. They just have way too many engineers and clearly no accountability. When you post your problem on the Windows 10 forum windows people never respond its all volunteers and the volunteers usually give you bad info. -- In Christ, Until He Come, Perhaps Today . . . 73 Walter Huyck W9KJO
|
|||||||||
|
|
|||||||||
|
Re: Back Pi Image and Clone SD Card
Walter
On Sun, Mar 29, 2020 at 11:06 AM, james wrote:
I have etcher as well a recent download. I would not work after the last update either. Both etcher and Win32DiscImager are running in Window7 capability mode So your assumptions about etcher are not correct. Sad to say -- In Christ, Until He Come, Perhaps Today . . . 73 Walter Huyck W9KJO
|
|||||||||
|
|
|||||||||
|
Re: Back Pi Image and Clone SD Card
Craig Davidson
I store my micro SD cards in the adapter and then use tape to attach
toggle quoted messageShow quoted text
the adapter to a large piece of paper with hand written notes as to the contents of the SD memory card
On 3/29/20, Max via Groups.Io <kg4pid=yahoo.com@groups.io> wrote:
I wonder why this is so slow? But I'm sure not going to tie up an extra uSD
|
|||||||||
|
|
