Today I had a power outage, from the 06:01 CEST to the 07:51 CEST. So the last record added by weewx before the outage was at 06:01 CEST. From logs (reporting here only last two lines):
pi@raspberrypi:~ $ journalctl -b -1 Aug 20 06:01:14 raspberrypi python3[16243]: weewx[16243] INFO weewx.manager: Added record 2022-08-20 06:01:00 CEST (1660968060) to database 'weewx.sdb' Aug 20 06:01:14 raspberrypi python3[16243]: weewx[16243] INFO weewx.manager: Added record 2022-08-20 06:01:00 CEST (1660968060) to daily summary in 'weewx.s> When the power came back, the wifi was not available, so the raspberry's time (I have no RTC module) was automatically set to a previously recorded timestamp: 05:53:32 CEST (118 mins before real time). So when weewx re-started recording, it discarded first 8 samples and then started going. From logs: Aug 20 06:01:19 raspberrypi python3[600]: weewx[600] ERROR weewx.manager: Unable to add record 2022-08-20 05:54:00 CEST (1660967640) to database 'weewx.sdb': UNIQUE constraint failed: archive.dateTime Aug 20 06:01:19 raspberrypi python3[600]: weewx[600] ERROR weewx.manager: Unable to add record 2022-08-20 05:55:00 CEST (1660967700) to database 'weewx.sdb': UNIQUE constraint failed: archive.dateTime Aug 20 06:01:19 raspberrypi python3[600]: weewx[600] ERROR weewx.manager: Unable to add record 2022-08-20 05:56:00 CEST (1660967760) to database 'weewx.sdb': UNIQUE constraint failed: archive.dateTime Aug 20 06:01:19 raspberrypi python3[600]: weewx[600] ERROR weewx.manager: Unable to add record 2022-08-20 05:57:00 CEST (1660967820) to database 'weewx.sdb': UNIQUE constraint failed: archive.dateTime Aug 20 06:01:19 raspberrypi python3[600]: weewx[600] ERROR weewx.manager: Unable to add record 2022-08-20 05:58:00 CEST (1660967880) to database 'weewx.sdb': UNIQUE constraint failed: archive.dateTime Aug 20 06:01:19 raspberrypi python3[600]: weewx[600] ERROR weewx.manager: Unable to add record 2022-08-20 05:59:00 CEST (1660967940) to database 'weewx.sdb': UNIQUE constraint failed: archive.dateTime Aug 20 06:01:19 raspberrypi python3[600]: weewx[600] ERROR weewx.manager: Unable to add record 2022-08-20 06:00:00 CEST (1660968000) to database 'weewx.sdb': UNIQUE constraint failed: archive.dateTime Aug 20 06:01:19 raspberrypi python3[600]: weewx[600] ERROR weewx.manager: Unable to add record 2022-08-20 06:01:00 CEST (1660968060) to database 'weewx.sdb': UNIQUE constraint failed: archive.dateTime Aug 20 06:02:16 raspberrypi python3[600]: weewx[600] INFO weewx.manager: Added record 2022-08-20 06:02:00 CEST (1660968120) to database 'weewx.sdb' Aug 20 06:02:16 raspberrypi python3[600]: weewx[600] INFO weewx.manager: Added record 2022-08-20 06:02:00 CEST (1660968120) to daily summary in 'weewx.sdb' But, and this is a bit surprising, it also discarded records collected in the davis datalogger. They are 110 lines, from 1660968120 (06:02:00 CEST) and 1660974660 (07:51:00 CEST) (The power outage didn't affect the davis station: it is battery powered). >From logs (reporting only the first and the last one): Aug 20 05:53:35 raspberrypi python3[600]: weewx[600] WARNING weewx.engine: Ignore historical record: {'dateTime': 1660968120, 'usUnits': 1, 'interval': 1, 'rxCheckPercent': 89.6875, 'outTemp': 68.8> ... Aug 20 05:53:35 raspberrypi python3[600]: weewx[600] WARNING weewx.engine: Ignore historical record: {'dateTime': 1660974660, 'usUnits': 1, 'interval': 1, 'rxCheckPercent': 100.0, 'outTemp': 69.5, > Why were they discarded? Because the weewx time was before the record's time? Then, few hours later I restored the wifi network, and the rasp automatically changed his time, and so weewx. From logs: Aug 20 12:09:33 raspberrypi systemd[1]: Started Network Time Synchronization. Aug 20 14:07:04 raspberrypi systemd-timesyncd[2057]: Initial synchronization to time server 93.94.88.51:123 (0.debian.pool.ntp.org). Aug 20 14:07:05 raspberrypi python3[600]: weewx[600] INFO weewx.engine: Clock error is -7050.52 seconds (positive is fast) Aug 20 14:07:05 raspberrypi python3[600]: weewx[600] INFO weewx.drivers.vantage: Clock set to 2022-08-20 14:07:06 CEST (1660997226) After this, it started to store data correctly, starting from 1660997280 (14:08:00 CEST). Now the situation is: - I have a hole from the 1660990140 (12:09:00 CEST) to 1660997280 (14:08:00 CEST) (excluded). (When I restored the network connection, and rasp fixed its time). - All the database records with dateTime from 1660968120 (06:02:00 CEST) to 1660990140 (12:09:00 CEST) (included) are backshifted of 118 minutes - Real records from 1660968120 (06:02:00 CEST) to 1660974660 (07:51:00 CEST) are in the datalogger so I can restore them. - The only records I lost, are the first 8 samples weewx took after restart (from 07:52:00 CEST to 07:59:00 CEST, included) My plan to fix data: 1. drop (but preserving for later use) all the records starting from 1660968120 (06:02:00 CEST) (included) from the `archive` table in the database 2. start weewx with datalogger activated to download records from 1660968120 (06:02:00 CEST) to 1660974660 (07:51:00 CEST) 3. re-insert records I removed at step 1. insert only from 1660968120 (06:02:00 CEST) to 1660990140 (12:09:00 CEST), adding 118*60 to dateTime 4. re-insert all the following records (so starting from 1660997280 (14:08:00 CEST)) keeping them as they are 5. fix other table running `wee_database --drop-daily` and then `wee_database --rebuild-daily` (maybe scoped to the single day of today) Any suggestion, or comment? Thanks [But at the end, I have a question: Why in the datalogger, records starting from 07:52:00 CEST, have the same wrong values present in the weewx database? Is the datalogger written by weewx? I mean: It looks like the datalogger has been written by weewx when (i) no data were present AND (ii) weewx was connected to him (so, starting from 07:52:00 CEST. before data are present, collected by the station itself)] -- 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. To view this discussion on the web visit https://groups.google.com/d/msgid/weewx-user/33f97a6b-db99-410f-9c3b-f97171c29722n%40googlegroups.com.