Hi,
just a short question: I startet SD Mirroring in openhabian-config for the first time. It is running on a RPI4 with 32GB cards.
How long should the initial copy take? I am waiting for 3 Hours.
Everything I see is:
Syncing disks.
Taking a raw partition copy, be prepared this may take long such as 20-30 minutes for a 16 GB SD card
Is there any log I can have a look into?
Kinds
Chris
set debugmode=maximum in /etc/openhabian.conf and try again.
No there is no log.
Maybe I mixed up the SD* devices. Now it is running and debugmode=maximum is showing the progress.
Thanks anyway for the reply!
How is the copy working? Does it rewrite the full SD or just the used blocks?
I have a 256 GB SD and the copy takes many hours. And during this, the system is obviously much slower.
Full SD. 256 GB is total overkill.
Thank you for your quick response.
Of course you are right, it’s overkill. I had this spare SD card when I started using OH some years ago, so I used it.
Seems I have to migrate to a smaller one if I want to use SD Mirror.
Currently I’m doing OH and Influx backup directly to my Syno. However, I noticed that Influx backup fills the ZRAM Cache, which leads to datal loss on next reboot as the cache could not be written back. Because of this I have to restart ZRAM Service to write back the cache, which also triggers OH restart. I increased ZRAM Cache but nevertheless at some point, it will be full.
So I tried to use SD Mirror as I somewhere read that it also takes care of ZRAM cache and of course would allow for an even quicker restore procedure.