On Tuesday, March 14, 2017 at 5:56:39 PM UTC-4, Theophanis Kontogiannis
wrote:
>
> The second solution you suggested bellow looks more preferable in my
> environment. You see the root filesystem is on high end CF cards running on
> RAID 1, so it is fast, with steady low consumption, and available
> continuously day and night.
>
> "you might consider having weewx run all the time, but send its data to a
> sqlite database on a tmpfs (ramdisk)."
>
> Any guidance on what to look for to implement it?
>
the first part is trivial.
1) create a mount point
sudo mkdir /var/weewx
2) create a tmpfs by adding an entry to fstab:
echo "weewx /var/weewx tmpfs=100M,noexec,nosuid,nodev 0 0" | sudo tee -a
/etc/fstab
3) mount the filesystem
sudo mount -a
4) modify weewx.conf to put the weewx database on the tmpfs
[DatabaseTypes]
[[SQLite]]
driver = weedb.sqlite
SQLITE_ROOT = /var/weewx
the second part will take a bit more work. you'll have to find/write
something that periodically queries the sqlite database and inserts the
results into the database on the RAID filesystem.
m
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