ZFS installer - check storage capabilities
ZFS installer fails on the SG-2220 due to the small size of the internal storage (4 GB). The default swap size in ZFS is 2G but reducing this still results in a failure. The install appears to go through properly but after a reboot we get this error:
Mounting from zfs:zroot/ROOT/default failed with error 5. Loader variables: vfs.root.mountfrom=zfs:zroot/ROOT/default Manual root filesystem specification: <fstype>:<device> [options] Mount <device> using filesystem <fstype> and with the specified (optional) option list. eg. ufs:/dev/da0s1a zfs:tank cd9660:/dev/cd0 ro (which is equivalent to: mount -t cd9660 -o ro /dev/cd0 /) ? List valid disk boot devices . Yield 1 second (for background tasks) <empty line> Abort manual input mountroot> da0 at umass-sim0 bus 0 scbus6 target 0 lun 0 panic: mountroot: unable to (re-)mount root. cpuid = 1 KDB: enter: panic [ thread pid 1 tid 100002 ] Stopped at kdb_enter+0x3b: movq $0,kdb_why db>
The installer should check storage and memory capabilities to ensure ZFS isn't installed on a system with insufficient storage/memory requirements. The user should be alerted if the minimum size is not met. Documentation should be updated to reflect this.
Per Renato, this likely affects FreeBSD stock.