Been there, suffered the problem - 2 or 3 times! My solution is to create an image of your working system, stored on a drive attached to your PC. Set up a cron job on the weewx system to take a backup of the database (I use MySQL on the Raspberry Pi and use mysqldump) at least once in 24h. Recovery from SD card failure then comprises: 1 Write the saved image to a new SD card. This will also write an old database, but no matter. 2 Boot that image on the RPi. 3 Stop weewx. 4 Restore the database from the most recent backup (again, I use MySQL; I suspect sqlite is simpler) 5 Start weewx, and wait for it to update the database from the weather station. I use a Davis VantageVue, withthe Davis USB logger, which stores several days' worth of records.
The procedure is a bit cumbersome, but it has worked for me! I keep 7 days of database backups on a NAS on my home network. Incidentally, I've done a few other things to reduce the number of writes to the SD card: I use a syslog alternative that uses a RAM buffer rather than writing to /var/log, and I've put the RPi's web server storage on a ramdisk. Hope that helps Geoff -- 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+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
