Its' a Raspberry Pi 3B+ On Saturday, March 12, 2022 at 4:25:00 PM UTC-6 do...@dougjenkins.com wrote:
> Eric, if you have pi4 with firmware older than 09/2021, you can boot from > a usb3 drive. This is what I have been doing with my RPI as I have lost 2 > good sdcards due to write failures. > > On Sat, Mar 12, 2022, 4:46 PM Eric K <eric.k...@gmail.com> wrote: > >> Hi Peter. >> >> Correct, extending the life of the SD card is my goal. >> >> I am currently rebuilding my weewx Raspberry Pi system because of a >> suspected SD card failure. >> I had 2 local Linux users tell me that the symptoms are consistent with >> an SD card corruption. >> The card is only 9 months old, and it's not bottom-of-the barrel quality! >> I reached out for help 2 weeks ago and got zero responses. >> see: >> >> https://forums.raspberrypi.com/viewtopic.php?p=1979221&hilit=kernel+panic#p1979221 >> >> >> >> On Saturday, March 12, 2022 at 3:35:06 PM UTC-6 peterq...@gmail.com >> wrote: >> >>> If you're wanting a ramdisk because SD cards are unreliable, I wouldn't >>> bother. There is plenty of history of people running Weewx on Raspberry Pis >>> for many years without a problem with corrupted SD cards. >>> >>> On Sat, Mar 12, 2022 at 12:55 PM vince <vince...@gmail.com> wrote: >>> >>>> I would try 'mkdir /home/weewx/public_html/forecast' so the parent >>>> directory exists when weewx tries to write it. >>>> >>>> I'd also add that doing it your way means your NOAA files will be >>>> recreated every time it boots, which could take ages if you have many >>>> years >>>> of info like many of us do. >>>> >>>> One way would be to put something in your rc.local which runs after >>>> things mount ala: >>>> >>>> if [ -d /home/weewx/public_html ] >>>> then >>>> # prepopulate things here >>>> mkdir /home/weewx/public_html/forecast >>>> else >>>> logger "error - rc.local could not mkdir for weewx" >>>> fi >>>> >>>> You might run into timing issues if you do too much this way since >>>> rc.local tends to run toward the end of the startup sequence, but a quick >>>> mkdir should work. >>>> >>>> On Saturday, March 12, 2022 at 12:40:49 PM UTC-8 Eric K wrote: >>>> >>>>> Currently running weewx 4.5.1 in a Raspberry Pi 3B+ with the Bullseye >>>>> version of Raspberry Pi OS. >>>>> For a Raspberry Pi (using a microSD card as the OS system drive) I >>>>> want to create a ramdisk for the /home/weewx/public_html directory. >>>>> I followed examples from various webpages on the ramdisk topic. >>>>> What I've tried thus far doesn't fully work. >>>>> How are others implementing this? >>>>> >>>>> I started by renaming my /home/weewx/public_html directory to >>>>> /home/weewx/public_html_backup, so there would be no conflict when the >>>>> ramdisk was created at bootup. >>>>> Then, I put this line in the /etc/fstab file and rebooted. >>>>> tmpfs /home/weewx/public_html tmpfs defaults,noatime,size=100M >>>>> 0 0 >>>>> I tested it with sudo mount -a and the new partition was visible by >>>>> using the df command. >>>>> >>>>> After a reboot, a /home/weewx/public_html directory was created as a >>>>> tmpfs volume. >>>>> To test the functionality, I manually ran wee_reports to force the >>>>> webpage to be created. >>>>> When wee_reports ran, the process crashed with errors, because some of >>>>> the files don't exist from previous runs of wee_reports. >>>>> >>>>> pi@rpi3b:/home/weewx $ sudo bin/wee_reports >>>>> Using configuration file /home/weewx/weewx.conf >>>>> Generating for all time >>>>> Traceback (most recent call last): >>>>> File "/home/weewx/bin/user/belchertown.py", line 1390, in >>>>> get_extension_list >>>>> with open(forecast_file, "wb+") as file: >>>>> FileNotFoundError: [Errno 2] No such file or directory: >>>>> '/home/weewx/public_html/json/forecast.json' >>>>> >>>>> During handling of the above exception, another exception occurred: >>>>> >>>>> Traceback (most recent call last): >>>>> File "/home/weewx/bin/weewx/reportengine.py", line 196, in run >>>>> obj.start() >>>>> File "/home/weewx/bin/weewx/reportengine.py", line 281, in start >>>>> self.run() >>>>> File "/home/weewx/bin/weewx/cheetahgenerator.py", line 152, in run >>>>> ngen = self.generate(gen_dict[section_name], self.gen_ts) >>>>> File "/home/weewx/bin/weewx/cheetahgenerator.py", line 222, in >>>>> generate >>>>> ngen += self.generate(section[subsection], gen_ts) >>>>> File "/home/weewx/bin/weewx/cheetahgenerator.py", line 222, in >>>>> generate >>>>> ngen += self.generate(section[subsection], gen_ts) >>>>> File "/home/weewx/bin/weewx/cheetahgenerator.py", line 310, in >>>>> generate >>>>> searchList = self._getSearchList(encoding, timespan, >>>>> File "/home/weewx/bin/weewx/cheetahgenerator.py", line 387, in >>>>> _getSearchList >>>>> searchList += obj.get_extension_list(timespan, db_lookup) >>>>> File "/home/weewx/bin/user/belchertown.py", line 1399, in >>>>> get_extension_list >>>>> raise Warning( >>>>> Warning: Error writing forecast info to >>>>> /home/weewx/public_html/json/forecast.json. Reason: [Errno 2] No such >>>>> file >>>>> or directory: '/home/weewx/public_html/json/forecast.json' >>>>> >>>>> I found that if I copy the contents of my >>>>> /home/weewx/public_html_backup folder into the /home/weewx/public_html >>>>> ramdisk, then wee_reports completes and creates the fully populated >>>>> /home/weewx/public_html directory. >>>>> >>>>> Is everyone else populating the ramdisk with a backup of the >>>>> puclic_html folder at bootup time? >>>>> >>>>> Thanks, >>>>> Eric >>>>> >>>> -- >>>> You received this message because you are subscribed to the Google >>>> Groups "weewx-user" group. >>>> To unsubscribe from this group and stop receiving emails from it, send >>>> an email to weewx-user+...@googlegroups.com. >>>> To view this discussion on the web visit >>>> https://groups.google.com/d/msgid/weewx-user/71a87cdb-be9b-4cfc-b67b-e72802faceean%40googlegroups.com >>>> >>>> <https://groups.google.com/d/msgid/weewx-user/71a87cdb-be9b-4cfc-b67b-e72802faceean%40googlegroups.com?utm_medium=email&utm_source=footer> >>>> . >>>> >>> >>> >>> -- >>> Peter Quinn >>> (415)794-2264 <(415)%20794-2264> >>> >> -- >> You received this message because you are subscribed to the Google Groups >> "weewx-user" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to weewx-user+...@googlegroups.com. >> > To view this discussion on the web visit >> https://groups.google.com/d/msgid/weewx-user/d8e90467-dfcd-46fc-8a2d-af534c0f1dcdn%40googlegroups.com >> >> <https://groups.google.com/d/msgid/weewx-user/d8e90467-dfcd-46fc-8a2d-af534c0f1dcdn%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> > -- You received this message because you are subscribed to the Google Groups "weewx-user" group. 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