OpenZFS: sysctl: unknown oid 'vfs.zfs.arc_max'

Graham Perrin grahamperrin at gmail.com
Sat Mar 28 06:43:42 UTC 2020


This occurs when I enable OpenZFS:

OpenZFS: sysctl: unknown oid 'vfs.zfs.arc_max'

Is it to be deprecated? Or is it not yet a feature of OpenZFS for FreeBSD?

 From <https://pastebin.com/hTCTWPW2>:

grahamperrin at momh167-gjp4-8570p:~ % sysctl vfs.zfs.arc_max
sysctl: unknown oid 'vfs.zfs.arc_max'
grahamperrin at momh167-gjp4-8570p:~ % date ; uname -v
Wed 25 Mar 2020 04:52:22 GMT
FreeBSD 13.0-CURRENT #1 r359249: Tue Mar 24 00:12:27 GMT 2020 
root at momh167-gjp4-8570p:/usr/obj/usr/src/amd64.amd64/sys/GENERIC-NODEBUG
grahamperrin at momh167-gjp4-8570p:~ % kldstat | grep zfs
  2    1 0xffffffff82108000   58ac58 openzfs.ko
grahamperrin at momh167-gjp4-8570p:~ % grep zfs /boot/loader.conf
# zfs_load="YES"
openzfs_load="YES"
grahamperrin at momh167-gjp4-8570p:~ % grep zfs /etc/sysctl.conf
vfs.zfs.min_auto_ashift=12
# HP EliteBook 8570p 16 GB memory vfs.zfs.arc_max defaults to 15523106816
# vfs.zfs.arc_max="7761553408"
vfs.zfs.arc_max="2147483648"
grahamperrin at momh167-gjp4-8570p:~ % zfs-stats -a

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