Intermittent hosts hanging PVE 7.4 Kernel 5.15.83-1

[Nips]

Hello

Since we upgraded our hosts to 7.4 with Kernel 5.15.83-1 they intermittently hang. Out of a cluster of 20 hosts, it has happened 3 times over a space of 3 weeks. Can't find any log entries and the server needs a reboot via the iDRAC to get it up again.

Due to the severity of the hang and no logs I suspect a Kernel issue and so am planning to upgrade to 5.15.108-1,. however before I do that it would be good to know if anyone else has experience similar or if there are known issues in 5.15.83-1? I saw where someone was having an issue with upgrading where the host was hanging trying to load 5.15.83-1 but that is a bit different - our hosts run fine most of the time

 

[t.lamprecht]

Hello,

Do you still know which kernel version run before the recent upgrade to 5.15.83-1?

Also, what could help to diagnose this is connecting to a server via ssh from an unrelated host and run journalctl -f, as sometimes the network stack lives long enough to get some logs out that couldn't be synced down to disk anymore.