TheThingIs
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TheThingIs's post in unable to increase ZFS arc cache was marked as the answerLast night I set the cache manually using
root@Server:~# echo 64000000000 > /sys/module/zfs/parameters/zfs_arc_max
and today my system is indeed using 64gb of ram!
So I'll set a script to run at array start and hopefully should be good. Not an ideal solution but it works!!
Big thank you to everyone involved for jumping in and helping, I really appreciate it.
PS
I've just had a thought that I originally installed ZFS before it was part of the OS. I vaguely remember setting a max for the arc cache via cli as I only had 64gb at the time. It could have been a SpaceInvader1 guide I followed. If that setting has persisted through to the integrated version of ZFS then how would I reverse that?
PPS
got it, it was in my go file!!!