Dennis84

Not that I know of... Well, maybe that you are missing out on some security updates coming with the newer Linux version used by 6.9.0+. But I don't care about that because Unraid has been running stable as a rock since downgrading. No more NIC errors and proper SMB transfer speeds. Even my 6.9.0 repartitioned cache drives still work in 6.8.3. I repartitioned them in 6.9.0 with the '1 MiB Partition Alignment' due to the write amplification bug on Samsung Evo's. But 6.8.3 doesn't complain about that. It only shows 'unknown' as the partition format, but everything works.

I downgraded to 6.8.3 and all my problems mentioned in the opening post are gone. Happy for now.

I'm a bit in doubt about what to do. Before the last two stable updates 6.9.0 and 6.9.1 I ran Unraid 6.8.3 without any problems with an Intel Quad Core i3-8100 on a Fujitsu D3644-B motherboard. The one thing that was bothering me a bit was the write amplification when writing to my raid 0 cache pool of two Samsung EVO 970's. Thankfully Unraid 6.9.0 seemed to have fixed this (after repartitioning the cache pool drives). But now with 6.9.0 and 6.9.1 I run into a real stability issue with the network interface (so it seems) which leads to two things I didn't encounter before: Transfer speeds dropping after a while. Copying files to a share over SMB from a remote Windows machine starts out at ~900mbit, but after a few gigabytes the transfer speed drops to a few megabits. After restarting the transfer the speed is back to normal, but drops again after a few minutes. I do not have this when copying from other machines like an Apple Macbook. But I also didn't have this problem before using Unraid 6.8.3 and transferring files from the remote Windows machine. The NIC seems to trigger a kernel panic every now and then. This freezes network connectivity for a few seconds and then everything is back to normal. This mainly occurs when using a Windows 7 VM on Unraid itself and doing some heavy cpu load in that VM. Also didn't have this before with 6.8.3. These two problems are introduced since upgrading to 6.9.0. To get rid of the problems I can downgrade, but when I downgrade back to 6.8.3 I have to re-partition my cache drives again as 6.8.3 doesn't recognise the new '1 MiB Partition Alignment'. This is not really a problem except for the write amplification bug that will be back. But this is less of an annoyance than the problems described above. Below I have attached the part of the syslog with the NIC error stuff. After Googling around a bit I tried setting 'TCP segmentation offload' and 'generic segmentation offload' to off (ethtool -K eth0 tso off && ethtool -K eth0 gso off) but it doesn't seem to help. What should I do? Downgrade to 6.8.3 and accept the excessive writes on the cache ssd's or is there perhaps another thing I overlooked? There is a bios firmware update available for my D3644-B. Perhaps I can try that, but then again using the current bios I had no problems on 6.8.3. Thanks in advance for any advice/thoughts. syslog.txt