@jrey said in Unexplained halt / and of course lan outage.:
https://docs.freebsd.org/en/books/handbook/config/#adding-swap-space
True, mounting another ZFS partition eats up big quantities of system resources.
Happily enough, the swap partition is of type 'swap', whatever that might be. But probably a file system way easier to handle for the system as ZFS, ext3 or ntfs. Probably close to fat32 ;)
The small swap partition just exists so it can receive a oops kernel plus other crash details in file. I would trim down the system load if the swap partition was use for actual swapping.