October 2, 20232 yr After anywhere from 30mins to 7+days, Unraid becomes almost completely unresponsive until hard shutdown. This started happening with some 6.12.x version iirc. after almost 2 years of flawless operation. What still works when "unresponsive" responds to pings responds to bare-metal keyboard input but logging in times out wireguard vpn What I have tried so far disable C-states slightly decrease vm.dirty_background_ratio and vm.dirty_ratio disable expo profile running in a minimal working scenario with only 5 dockers and no vms play with quite a few more settings (1 at a time), which i should have all reverted due to not helping System hardware MSI B550M Pro-VDH Ryzen 5600g 64GB RAM Samsung 980 Pro 1TB Samsung 870 QVO 4TB Software setup Unraid v6.12.4 Plugins: CA, Active Streams, System Temp, Fix Common Problems, FolderView, Tips and Tweaks, UD, UD+, Unraid Connect, User Scripts 1TB cache 4TB array 2 auto-start ubuntu VMs, 1 auto-start windows VM several docker containers including typical services like nextcloud behind swag Syslog server recording The attached syslog was recorded during following sequence; Normal operation for 7 days (cut from log except for last 2 entries) 15:01 unresponsive 15:05 hard shutdown 15:43 temporary unresponsiveness (just ~2mins, first time ever noticed by us in this fashion) 15:56 unresponsive syslog_oct_2.txt server-diagnostics-20231002-1714.zip Edited October 2, 20232 yr by Alintya
October 2, 20232 yr Community Expert Unfortunately there's nothing relevant logged, other than a OOM event*, this usually points to a hardware issue, one thing you can try is to boot the server in safe mode with all docker/VMs disabled, let it run as a basic NAS for a few days, if it still crashes it's likely a hardware problem, if it doesn't start turning on the other services one by one. * If it's a one time thing you can ignore, if it keeps happening try limiting more the RAM for VMs and/or docker containers, the problem is usually not just about not enough RAM but more about fragmented RAM, alternatively a small swap file on disk might help, you can use the swapfile plugin: https://forums.unraid.net/topic/109342-plugin-swapfile-for-691/
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