Vm_size warnings. Just had the 2.1.4 AMD64 crash.

[Supermule]

Aug 2 21:05:27 kernel: Consider tuning vm.kmem_size and vm.kmem_size_max
Aug 2 21:05:27 kernel: ZFS WARNING: Recommended minimum kmem_size is 512MB; expect unstable behavior.

It stopped routing until a hard reset and it came back online.

/boot/loader.conf looks like this

autoboot_delay="3"
vm.kmem_size="435544320"
vm.kmem_size_max="535544320"
kern.ipc.nmbclusters="0"
kern.hz=100
vmblock_load="YES"
vmmemct_load="YES"
vmhgfs_load="YES"
vmxnet_load="YES"
hw.usb.no_pf="1"

[Supermule]

Changed the vm.kmem_size_max="535544320" to 536870912 and the error went away during boot.

Now the logs shows this….

Aug 2 22:32:47 kernel: ZFS storage pool version 28
Aug 2 22:32:47 kernel: ZFS filesystem version 5
Aug 2 22:32:47 kernel: to enable, add "vfs.zfs.prefetch_disable=0" to /boot/loader.conf.
Aug 2 22:32:47 kernel: ZFS NOTICE: Prefetch is disabled by default if less than 4GB of RAM is present;
Aug 2 22:32:47 kernel: Trying to mount root from ufs:/dev/da0s1a

Before it was looking like this:

Aug 2 21:38:51 kernel: ZFS storage pool version 28
Aug 2 21:38:51 kernel: ZFS filesystem version 5
Aug 2 21:38:51 kernel: in /boot/loader.conf.
Aug 2 21:38:51 kernel: Consider tuning vm.kmem_size and vm.kmem_size_max
Aug 2 21:38:51 kernel: ZFS WARNING: Recommended minimum kmem_size is 512MB; expect unstable behavior.
Aug 2 21:38:51 kernel: to enable, add "vfs.zfs.prefetch_disable=0" to /boot/loader.conf.
Aug 2 21:38:51 kernel: ZFS NOTICE: Prefetch is disabled by default if less than 4GB of RAM is present;
Aug 2 21:38:51 kernel: Trying to mount root from ufs:/dev/da0s1a