NAS4Free 9

Install of NAS4Free 9.0.0.1.43 on to a flash stuck in PATA was uneventful. But unlike Solaris, OpenIndiana and FreeNAS the web GUI showed me exactly what I wanted to know - real time status of NAS appliance: CPU frequency and load, SMART status of hard drives.

Power management worked and CPU frequency was adjusting according to load! On Solaris and OpenIndiana smartctl never worked for me. On FreeNAS smartctl did work but powerd did not and GUI was lacking this info.
I imported a ZFS hard drive created on FreeNAS8 and jumped to network throughput testing. Writing to NAS (I copied a 5.08GB DVD from win7 PC) went at around 40MB/sec.
Reading from NAS begins but then fails. Windows shows "Network Error" dialog "There is a problem accessing \\nas\zfs".
dmesg tells me "pid 7239 (smbd), uid 0: exited on signal 6"
log.nmbd and log.smbd contain nothing but startup messages.
Houston, we have a problem.

I will try to re-create ZFS vdev and pool and to reproduce.
More from the GUI diagnostics log:

Mar 31 22:25:05 nas smbd[7102]: [2012/03/31 22:25:05.441422, 0] lib/fault.c:51(fault_report)
Mar 31 22:25:05 nas smbd[7102]: ===============================================================
Mar 31 22:25:05 nas smbd[7102]: [2012/03/31 22:25:05.441703, 0] lib/fault.c:52(fault_report)
Mar 31 22:25:05 nas smbd[7102]: INTERNAL ERROR: Signal 11 in pid 7102 (3.6.3)
Mar 31 22:25:05 nas smbd[7102]: Please read the Trouble-Shooting section of the Samba3-HOWTO
Mar 31 22:25:05 nas smbd[7102]: [2012/03/31 22:25:05.441749, 0] lib/fault.c:54(fault_report)
Mar 31 22:25:05 nas smbd[7102]:
Mar 31 22:25:05 nas smbd[7102]: From: http://www.samba.org/samba/docs/Samba3-HOWTO.pdf
Mar 31 22:25:05 nas smbd[7102]: [2012/03/31 22:25:05.441786, 0] lib/fault.c:55(fault_report)
Mar 31 22:25:05 nas kernel: pid 7102 (smbd), uid 0: exited on signal 6
Mar 31 22:25:05 nas smbd[7102]: ===============================================================
Mar 31 22:25:05 nas smbd[7102]: [2012/03/31 22:25:05.441813, 0] lib/util.c:1117(smb_panic)
Mar 31 22:25:05 nas smbd[7102]: PANIC (pid 7102): internal error
Mar 31 22:25:05 nas smbd[7102]: [2012/03/31 22:25:05.441883, 0] lib/util.c:1221(log_stack_trace)
Mar 31 22:25:05 nas smbd[7102]: BACKTRACE: 0 stack frames:
Mar 31 22:25:05 nas smbd[7102]: [2012/03/31 22:25:05.441976, 0] lib/fault.c:416(dump_core)
Mar 31 22:25:05 nas smbd[7102]: dumping core in /var/log/samba/cores/smbd
Mar 31 22:25:05 nas smbd[7102]:

Off to read Trouble-Shooting section of the Samba3-HOWTO