just booted with the old 8.3 for checking: there I see three drives, not two. One seems really to be "missing" ...
Code:
Copyright (c) 1992-2013 The FreeBSD Project.
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FreeBSD 9.2-RELEASE-p12 #0 r262572+b043649: Sun Sep 28 23:03:31 PDT 2014
root@build3.ixsystems.com:/tank/home/jkh/build/921/freenas/os-base/amd64/fusion/jkh/921/freenas/FreeBSD/src/sys/FREENAS.amd64 amd64
gcc version 4.2.1 20070831 patched [FreeBSD]
CPU: Intel(R) Celeron(R) CPU 420 @ 1.60GHz (1600.03-MHz K8-class CPU)
Origin = "GenuineIntel" Id = 0x10661 Family = 0x6 Model = 0x16 Stepping = 1
Features=0xafebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,TM,PBE>
Features2=0xe31d<SSE3,DTES64,MON,DS_CPL,TM2,SSSE3,CX16,xTPR,PDCM>
AMD Features=0x20100800<SYSCALL,NX,LM>
AMD Features2=0x1<LAHF>
TSC: P-state invariant, performance statistics
real memory = 2147483648 (2048 MB)
avail memory = 2035609600 (1941 MB)
Event timer "LAPIC" quality 400
ACPI APIC Table: <121907 APIC1340>
WARNING: VIMAGE (virtualized network stack) is a highly experimental feature.
ioapic0 <Version 2.0> irqs 0-23 on motherboard
kbd1 at kbdmux0
cryptosoft0: <software crypto> on motherboard
aesni0: No AESNI support.
padlock0: No ACE support.
acpi0: <121907 XSDT1340> on motherboard
acpi0: Power Button (fixed)
acpi0: reservation of 0, a0000 (3) failed
acpi0: reservation of 100000, 7f700000 (3) failed
cpu0: <ACPI CPU> on acpi0
attimer0: <AT timer> port 0x40-0x43 irq 0 on acpi0
Timecounter "i8254" frequency 1193182 Hz quality 0
Event timer "i8254" frequency 1193182 Hz quality 100
atrtc0: <AT realtime clock> port 0x70-0x71 irq 8 on acpi0
Event timer "RTC" frequency 32768 Hz quality 0
Timecounter "ACPI-fast" frequency 3579545 Hz quality 900
acpi_timer0: <24-bit timer at 3.579545MHz> port 0x808-0x80b on acpi0
pcib0: <ACPI Host-PCI bridge> port 0xcf8-0xcff on acpi0
pci0: <ACPI PCI bus> on pcib0
vgapci0: <VGA-compatible display> port 0xec00-0xec07 mem 0xffa80000-0xffafffff,0xe0000000-0xefffffff,0xffa40000-0xffa7ffff irq 16 at device 2.0 on pci0
agp0: <Intel 82945G (945G GMCH) SVGA controller> on vgapci0
agp0: aperture size is 256M, detected 7932k stolen memory
pcib1: <ACPI PCI-PCI bridge> irq 16 at device 28.0 on pci0
pci1: <ACPI PCI bus> on pcib1
em0: <Intel(R) PRO/1000 Network Connection 7.3.8> port 0xbc00-0xbc1f mem 0xff6e0000-0xff6fffff irq 16 at device 0.0 on pci1
em0: Using an MSI interrupt
em0: Ethernet address: 00:15:17:31:a6:7f
pcib2: <ACPI PCI-PCI bridge> irq 18 at device 28.2 on pci0
pci2: <ACPI PCI bus> on pcib2
siis0: <SiI3132 SATA controller> port 0xcc00-0xcc7f mem 0xff8ffc00-0xff8ffc7f,0xff8f8000-0xff8fbfff irq 18 at device 0.0 on pci2
siisch0: <SIIS channel> at channel 0 on siis0
siisch1: <SIIS channel> at channel 1 on siis0
uhci0: <Intel 82801G (ICH7) USB controller USB-A> port 0xe000-0xe01f irq 23 at device 29.0 on pci0
uhci0: LegSup = 0x2f00
usbus0 on uhci0
uhci1: <Intel 82801G (ICH7) USB controller USB-B> port 0xdc00-0xdc1f irq 19 at device 29.1 on pci0
uhci1: LegSup = 0x2f00
usbus1 on uhci1
uhci2: <Intel 82801G (ICH7) USB controller USB-C> port 0xd880-0xd89f irq 18 at device 29.2 on pci0
uhci2: LegSup = 0x2f00
usbus2 on uhci2
uhci3: <Intel 82801G (ICH7) USB controller USB-D> port 0xd800-0xd81f irq 16 at device 29.3 on pci0
uhci3: LegSup = 0x2f00
usbus3 on uhci3
ehci0: <Intel 82801GB/R (ICH7) USB 2.0 controller> mem 0xffa3f800-0xffa3fbff irq 23 at device 29.7 on pci0
usbus4: EHCI version 1.0
usbus4 on ehci0
pcib3: <ACPI PCI-PCI bridge> at device 30.0 on pci0
pci3: <ACPI PCI bus> on pcib3
isab0: <PCI-ISA bridge> at device 31.0 on pci0
isa0: <ISA bus> on isab0
atapci0: <Intel ICH7 UDMA100 controller> port 0x1f0-0x1f7,0x3f6,0x170-0x177,0x376,0xffa0-0xffaf at device 31.1 on pci0
ata0: <ATA channel> at channel 0 on atapci0
ahci0: <Intel ICH7 AHCI SATA controller> port 0xe880-0xe887,0xe800-0xe803,0xe480-0xe487,0xe400-0xe403,0xe080-0xe08f mem 0xffa3fc00-0xffa3ffff irq 19 at device 31.2 on pci0
ahci0: AHCI v1.10 with 4 3Gbps ports, Port Multiplier not supported
ahcich0: <AHCI channel> at channel 0 on ahci0
ahcich1: <AHCI channel> at channel 1 on ahci0
ahcich2: <AHCI channel> at channel 2 on ahci0
ahcich3: <AHCI channel> at channel 3 on ahci0
pci0: <serial bus, SMBus> at device 31.3 (no driver attached)
acpi_button0: <Power Button> on acpi0
uart0: <16550 or compatible> port 0x3f8-0x3ff irq 4 flags 0x10 on acpi0
ichwd0 on isa0
sc0: <System console> at flags 0x100 on isa0
sc0: VGA <16 virtual consoles, flags=0x300>
vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0
atkbdc0: <Keyboard controller (i8042)> at port 0x60,0x64 on isa0
atkbd0: <AT Keyboard> irq 1 on atkbdc0
kbd0 at atkbd0
atkbd0: [GIANT-LOCKED]
wbwd0: HEFRAS and EFER do not align: EFER 0x2e DevID 0xff DevRev 0xff CR26 0xff
coretemp0: <CPU On-Die Thermal Sensors> on cpu0
coretemp0: Tj(target) value 0 does not seem right.
p4tcc0: <CPU Frequency Thermal Control> on cpu0
Timecounters tick every 1.000 msec
ipfw2 (+ipv6) initialized, divert enabled, nat enabled, default to accept, logging disabled
DUMMYNET 0xfffffe00023ea100 with IPv6 initialized (100409)
load_dn_sched dn_sched RR loaded
load_dn_sched dn_sched WF2Q+ loaded
load_dn_sched dn_sched FIFO loaded
load_dn_sched dn_sched PRIO loaded
load_dn_sched dn_sched QFQ loaded
usbus0: 12Mbps Full Speed USB v1.0
usbus1: 12Mbps Full Speed USB v1.0
usbus2: 12Mbps Full Speed USB v1.0
usbus3: 12Mbps Full Speed USB v1.0
usbus4: 480Mbps High Speed USB v2.0
ugen0.1: <Intel> at usbus0
uhub0: <Intel UHCI root HUB, class 9/0, rev 1.00/1.00, addr 1> on usbus0
ugen1.1: <Intel> at usbus1
uhub1: <Intel UHCI root HUB, class 9/0, rev 1.00/1.00, addr 1> on usbus1
ugen2.1: <Intel> at usbus2
uhub2: <Intel UHCI root HUB, class 9/0, rev 1.00/1.00, addr 1> on usbus2
ugen3.1: <Intel> at usbus3
uhub3: <Intel UHCI root HUB, class 9/0, rev 1.00/1.00, addr 1> on usbus3
ugen4.1: <Intel> at usbus4
uhub4: <Intel EHCI root HUB, class 9/0, rev 2.00/1.00, addr 1> on usbus4
uhub0: 2 ports with 2 removable, self powered
uhub1: 2 ports with 2 removable, self powered
uhub2: 2 ports with 2 removable, self powered
uhub3: 2 ports with 2 removable, self powered
(aprobe1:ahcich1:0:0:0): SET_MULTI. ACB: c6 00 00 00 00 40 00 00 00 00 10 00
(aprobe1:ahcich1:0:0:0): CAM status: ATA Status Error
(aprobe1:ahcich1:0:0:0): ATA status: 51 (DRDY SERV ERR), error: 04 (ABRT )
(aprobe1:ahcich1:0:0:0): RES: 51 04 00 00 00 40 00 00 00 10 00
(aprobe1:ahcich1:0:0:0): Retrying command
(aprobe1:ahcich1:0:0:0): SET_MULTI. ACB: c6 00 00 00 00 40 00 00 00 00 10 00
(aprobe1:ahcich1:0:0:0): CAM status: ATA Status Error
(aprobe1:ahcich1:0:0:0): ATA status: 51 (DRDY SERV ERR), error: 04 (ABRT )
(aprobe1:ahcich1:0:0:0): RES: 51 04 00 00 00 40 00 00 00 10 00
(aprobe1:ahcich1:0:0:0): Error 5, Retries exhausted
(aprobe1:ahcich2:0:0:0): SET_MULTI. ACB: c6 00 00 00 00 40 00 00 00 00 10 00
(aprobe1:ahcich2:0:0:0): CAM status: ATA Status Error
(aprobe1:ahcich2:0:0:0): ATA status: 51 (DRDY SERV ERR), error: 04 (ABRT )
(aprobe1:ahcich2:0:0:0): RES: 51 04 00 00 00 40 00 00 00 10 00
(aprobe1:ahcich2:0:0:0): Retrying command
(aprobe1:ahcich2:0:0:0): SET_MULTI. ACB: c6 00 00 00 00 40 00 00 00 00 10 00
(aprobe1:ahcich2:0:0:0): CAM status: ATA Status Error
(aprobe1:ahcich2:0:0:0): ATA status: 51 (DRDY SERV ERR), error: 04 (ABRT )
(aprobe1:ahcich2:0:0:0): RES: 51 04 00 00 00 40 00 00 00 10 00
(aprobe1:ahcich2:0:0:0): Error 5, Retries exhausted
ada0 at ahcich0 bus 0 scbus3 target 0 lun 0
ada0: <ST3000DM001-1CH166 CC24> ATA-8 SATA 3.x device
ada0: Serial Number Z1F1K3JX
ada0: 300.000MB/s transfers (SATA 2.x, UDMA6, PIO 8192bytes)
ada0: Command Queueing enabled
ada0: 2861588MB (5860533168 512 byte sectors: 16H 63S/T 16383C)
ada0: quirks=0x1<4K>
ada0: Previously was known as ad8
ada1 at ahcich3 bus 0 scbus6 target 0 lun 0
ada1: <ST3000DM001-1CH166 CC24> ATA-8 SATA 3.x device
ada1: Serial Number Z1F1JW9V
ada1: 300.000MB/s transfers (SATA 2.x, UDMA6, PIO 8192bytes)
ada1: Command Queueing enabled
ada1: 2861588MB (5860533168 512 byte sectors: 16H 63S/T 16383C)
ada1: quirks=0x1<4K>
ada1: Previously was known as ad14
Timecounter "TSC" frequency 1600029824 Hz quality 1000
Root mount waiting for: usbus4
Root mount waiting for: usbus4
Root mount waiting for: usbus4
uhub4: 8 ports with 8 removable, self powered
Root mount waiting for: usbus4
Root mount waiting for: usbus4
ugen4.2: <Verbatim> at usbus4
umass0: <Verbatim STORE N GO, class 0/0, rev 2.10/1.00, addr 2> on usbus4
umass0: SCSI over Bulk-Only; quirks = 0x4100
umass0:8:0:-1: Attached to scbus8
Trying to mount root from ufs:/dev/ufs/FreeNASs1a [ro]...
mountroot: waiting for device /dev/ufs/FreeNASs1a ...
da0 at umass-sim0 bus 0 scbus8 target 0 lun 0
da0: <Verbatim STORE N GO PMAP> Removable Direct Access SCSI-4 device
da0: Serial Number 070725EB0CD7E064
da0: 40.000MB/s transfers
da0: 14786MB (30283008 512 byte sectors: 255H 63S/T 1885C)
da0: quirks=0x2<NO_6_BYTE>
GEOM_RAID5: Module loaded, version 1.1.20130907.44 (rev 5c6d2a159411)
ZFS NOTICE: Prefetch is disabled by default if less than 4GB of RAM is present;
to enable, add "vfs.zfs.prefetch_disable=0" to /boot/loader.conf.
ZFS filesystem version: 5
ZFS storage pool version: features support (5000)
GEOM_ELI: Device ada0p1.eli created.
GEOM_ELI: Encryption: AES-XTS 256
GEOM_ELI: Crypto: software
GEOM_ELI: Device ada1p1.eli created.
GEOM_ELI: Encryption: AES-XTS 256
GEOM_ELI: Crypto: software