TrueNAS Scale has every so often recently randomly lost access to the mirrored SSDs that host the OS. I have swapped between SATA drives cables, SATA controllers (onboard/LSI 9305-16i), made sure the two drives run on separate SATA power cables, checked SMART data on the boot pool drives (all good,…

I do experience the same behavior since the Cobia update: [image]

Per iX recommendation, please run echo n >/sys/kernel/mm/lru_gen/enabled and see if this helps. You can also add this as a post-init command for it to persist on reboot. Your graph looks very similar to a known bug that is being fixed with the .1 release coming before the end of this month. [im…

Sorry, I mistakenly hastily wrote the wrong version. I upgraded from Cobia to Dragonfish-24.04.0 Since the upgrade the system is very slow. I have a SSD drive for the OS. It has been working fine for the last 2 years. Executing echo n >/sys/kernel/mm/lru_gen/enabled in the shell returns nothing. …

[image] rumplin: returns nothing. This is intended, it just sets a parameter that changed since the update to DF. Keep an eye after this has been executed and see if you continue to see the same.

For now, it seems to have fixed my issue. Thank you very much. Interestingly, I have another TrueNAS deployment, and no issues like mine seem to appear there. I guess don’t fix if it’s working, so I won’t run the command there for now.

Right, added the command as a post-init and ran it manually once just now. Does the command still need to be run after the .1 update? And which specific bug is it?

See: [image] Dragonfish swap usage/high memory/memory leak issues TrueNAS General After deeper digging into the problem, it looks to me caused not only by increased ARC size, reduction which according to some people may not fix the problem, but also by Linux kernel update …

OS drives/pool randomly drops/fails after Dragonfish update

TrueNAS General

essinghigh May 19, 2024, 12:13am 8

See:

As this will be included in the .1 update you can remove the post-init script after the fact.

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OS drives/pool randomly drops/fails after Dragonfish update

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