Thanks,Tom! I'm not doing anything out of the ordinary, so I shall keep
doing what I've been doing.
Take care, Paul VE1DX
On 2019-11-12 12:12 p.m., Thomas Keffer wrote:
Unless you are running some unusual service, there should be no
situations where weewx is modifying the database between archive events.
-tk
On Tue, Nov 12, 2019 at 7:48 AM WindnFog <foc1...@gmail.com
<mailto:foc1...@gmail.com>> wrote:
Reading the list archive, the documentation, and searching the
Internet about the "best" way to backup SQLite databases, I
conclude cold backups are safer than a "hot" cp or rsync. That
said, I am doing a hot rsync (takes 2-3 seconds) to another LAN
system and a cloud server at 01:18 AM daily. Since I only write
archive records to the database at XX:00, XX:05, XX:10, etc., I
*think* this is safe. The documentation says:
"Do not make a copy of the SQLite database while in the middle of
a transaction! Schedule the backup for immediately after an
archive record is written, and then make sure the backup completes
before the next archive record arrives. Alternatively, stop WeeWX,
perform the backup, then restart WeeWX."
I prefer not to stop/start weewx every day, but I will if
necessary. Are their situations where some part of weewx could be
modifying the database between the archive writes every 5 minutes?
I have done a couple of restores over the past 4-5 years with no
issues, but am I playing with fire?
What are you guys doing vis-à-vis weewx.sdb backups?
- Paul VE1DX
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