I have had this happen twice now. I have my nightly process happening at 2 AM and I get up for work at 3AM. Twice in the last couple of weeks, nothing ZWave will work when I get up. I pull up the ZWave settings page and almost all devices will have it's routing table blank. If I reboot the hub it does not fix it, I have to shutdown the hub and unplug it for 30 seconds to reset the ZWave radio. When I plug it back in and it fully comes up, everything immediately has it's routing table populated and everything works again. It seems like something with the nightly process is making the ZWave chip angry. I went back to past logs this morning and everything seems like it is working and showing up in the log until 2AM then after 2AM the only thing that populated the log was zigbee items.
The only thing that would cause radio crashes like that is a rougue device I think or something overwhelming the mesh. (It also occurs sometimes during firmware updates) I would start checking your logs. What does your nightly "process" consist of?
I assume what every one else's consists of. Backups and whatever else happens in the background at the backup time. (settings > backup). Everything is normally stable and the only thing I have added in the last two-three weeks is two Zooz temp/humidity sensors but those are reporting correctly and I haven't had any issues there. The system stays stable and the only thing I can see is something happens when the nightly processes happen at that set time. It has only happened twice in the last month or so, but more than once is no longer a fluke. I think it is something with the nightly process since I no longer see ZWave devices in the log after that time until I do the 30 second power off. Also, some devices still have routing info in the table, but not many, so it isn't 100% missing off the table but a majority is.
Oh I thought you were running process'. Didn't realize you work talking about the built in nightly hub maintenance. That said I would start with a soft reset. Download the backup to your PC from the download button on the settings>>backup and restore menu. Go to yourhubip:8081 and do the soft reset and then use the file you downloaded to your pc when prompted to restore. This will ensure your hub isn't corrupt. Check your logs after this happens, and put a tag into @gopher.ny pr @bobbyD to check your engineering logs before you power cycle.
I thought about doing that, I will try when I get home this afternoon. That isn't something I want to try over VPN Thanks for your reply on this, I will let you know the results.
Could you please send me your hub ID so we can further investigate? This is the first report of this nature, so something in your Z-Wave mesh gets angry in the middle of the night. Might be related to cloud backup if you are subscribed to Hub Protect and run backups every day.
Sure, sending it via PM, I was able to do the soft reset over VPN (I risked it) so hopefully that doesn't hinder your research. I am subscribed to hub protect and run backups every night. I changed the time to 4AM so if it breaks, it does so after I get up in the morning.
Checked your hub and there are no systematic problems. Pushing the backup time to later might help, as the process could make the hub sluggish while running.
Thanks for your reply on this, I will let you know the results.
