Date: Sat, 28 Aug 2010 11:50:29 -0400 From: Dan Langille <dan@langille.org> To: freebsd-scsi@freebsd.org Subject: Re: camcontrol rescan all - locks system Message-ID: <4C793045.2010300@langille.org> In-Reply-To: <4C792465.9060201@feral.com> References: <4C78FF01.5020500@langille.org> <4C792465.9060201@feral.com>
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On 8/28/2010 10:59 AM, Matthew Jacob wrote:
> On 8/28/2010 5:20 AM, Dan Langille wrote:
>> Hi,
>>
>> Running FreeBSD 8.1 stable on this particular box. I ran a camcontrol
>> devlist and didn't see my external tape library listed. I powered it
>> up and ran a 'camcontrol rescan all'. Now the system is froxen. Not
>> crashed, but nearly frozen. It responds to pings. New ssh sessions are
>> not connecting. Existing ssh sessions take one command and do not
>> respond. The console takes my login id, but does not prompt for the
>> password.
>>
>> I could reboot, but I'm about to go out for a bit and figured I'd ask
>> here and see what happens in my absence.
>
> And more details....?
I've returned, and the system is still as it was. On the ssh session I see:
$ sudo camcontrol devlist
Password:
Sorry, try again.
Password:
<Hitachi HDS722020ALA330 JKAOA28A> at scbus0 target 0 lun 0 (pass0,ada0)
<Hitachi HDS722020ALA330 JKAOA28A> at scbus2 target 0 lun 0 (pass1,ada1)
<Hitachi HDS722020ALA330 JKAOA28A> at scbus3 target 0 lun 0 (pass2,ada2)
<Hitachi HDS722020ALA330 JKAOA28A> at scbus4 target 0 lun 0 (pass3,ada3)
<Hitachi HDS722020ALA330 JKAOA28A> at scbus5 target 0 lun 0 (pass4,ada4)
<Hitachi HDS722020ALA330 JKAOA28A> at scbus6 target 0 lun 0 (pass5,ada5)
<Hitachi HDS722020ALA330 JKAOA28A> at scbus7 target 0 lun 0 (pass6,ada6)
<ST380815AS 4.AAB> at scbus8 target 0 lun 0 (pass7,ada7)
<TSSTcorp CDDVDW SH-S223C SB01> at scbus9 target 0 lun 0 (cd0,pass8)
<WDC WD1600AAJS-75M0A0 02.03E02> at scbus10 target 0 lun 0 (pass9,ada8)
[dan@kraken:~] $ sudo camcontrol rescan all
Re-scan of bus 0 was successful
Re-scan of bus 1 was successful
Re-scan of bus 2 was successful
Re-scan of bus 3 was successful
Re-scan of bus 4 was successful
Re-scan of bus 5 was successful
Re-scan of bus 6 was successful
Re-scan of bus 7 was successful
The OS is booting off sda7 and ada8, which is gmirrored:
Filesystem Size Used Avail Capacity Mounted on
/dev/mirror/gm0s1a 989M 512M 398M 56% /
devfs 1.0K 1.0K 0B 100% /dev
/dev/mirror/gm0s1e 3.9G 518K 3.6G 0% /tmp
/dev/mirror/gm0s1f 58G 46G 6.7G 87% /usr
/dev/mirror/gm0s1d 3.9G 185M 3.4G 5% /var
storage 4.3T 1.7G 4.3T 0% /storage
storage/Retored 4.3T 39K 4.3T 0% /storage/Retored
storage/bacula 8.2T 3.9T 4.3T 47% /storage/bacula
storage/pgsql 4.3T 5.5G 4.3T 0% /storage/pgsql
The other drives (ada0..6) are part of a 7x2TB ZFS array.
FreeBSD 8.1-STABLE #0: Sun Jul 25 19:18:56 EDT 2010
Jul
The full dmesg output (from earlier this month) appears below:
Copyright (c) 1992-2010 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
The Regents of the University of California. All rights reserved.
FreeBSD is a registered trademark of The FreeBSD Foundation.
FreeBSD 8.0-STABLE #0: Fri Mar 5 00:46:11 EST 2010
dan@kraken.example.org:/usr/obj/usr/src/sys/KRAKEN amd64
Timecounter "i8254" frequency 1193182 Hz quality 0
CPU: AMD Phenom(tm) II X4 945 Processor (3010.17-MHz K8-class CPU)
Origin = "AuthenticAMD" Id = 0x100f42 Stepping = 2
Features=0x178bfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,MMX,FXSR,SSE,SSE2,HTT>
Features2=0x802009<SSE3,MON,CX16,POPCNT>
AMD
Features=0xee500800<SYSCALL,NX,MMX+,FFXSR,Page1GB,RDTSCP,LM,3DNow!+,3DNow!>
AMD
Features2=0x37ff<LAHF,CMP,SVM,ExtAPIC,CR8,ABM,SSE4A,MAS,Prefetch,OSVW,IBS,SKINIT,WDT>
TSC: P-state invariant
real memory = 4294967296 (4096 MB)
avail memory = 4113461248 (3922 MB)
ACPI APIC Table: <111909 APIC1708>
FreeBSD/SMP: Multiprocessor System Detected: 4 CPUs
FreeBSD/SMP: 1 package(s) x 4 core(s)
cpu0 (BSP): APIC ID: 0
cpu1 (AP): APIC ID: 1
cpu2 (AP): APIC ID: 2
cpu3 (AP): APIC ID: 3
ACPI Warning: Optional field Pm2ControlBlock has zero address or length:
0 0/1 (20100121/tbfadt-655)
ioapic0 <Version 2.1> irqs 0-23 on motherboard
kbd1 at kbdmux0
acpi0: <111909 RSDT1708> on motherboard
acpi0: [ITHREAD]
acpi0: Power Button (fixed)
acpi0: reservation of fee00000, 1000 (3) failed
acpi0: reservation of ffb80000, 80000 (3) failed
acpi0: reservation of fec10000, 20 (3) failed
acpi0: reservation of 0, a0000 (3) failed
acpi0: reservation of 100000, dfe00000 (3) failed
ACPI HPET table warning: Sequence is non-zero (2)
Timecounter "ACPI-fast" frequency 3579545 Hz quality 1000
acpi_timer0: <32-bit timer at 3.579545MHz> port 0x808-0x80b on acpi0
acpi_hpet0: <High Precision Event Timer> iomem 0xfed00000-0xfed003ff on
acpi0
Timecounter "HPET" frequency 14318180 Hz quality 900
pcib0: <ACPI Host-PCI bridge> port 0xcf8-0xcff on acpi0
pci0: <ACPI PCI bus> on pcib0
pcib1: <ACPI PCI-PCI bridge> irq 18 at device 2.0 on pci0
pci8: <ACPI PCI bus> on pcib1
em0: <Intel(R) PRO/1000 Network Connection 6.9.14> port 0xec00-0xec1f
mem 0xfbfe0000-0xfbffffff,0xfbf00000-0xfbf7ffff,0xfbfdc000-0xfbfdffff
irq 18 at device 0.0 on pci8
em0: Using MSIX interrupts
em0: [ITHREAD]
em0: [ITHREAD]
em0: [ITHREAD]
em0: Ethernet address: 00:1b:21:51:ab:2d
pcib2: <ACPI PCI-PCI bridge> irq 17 at device 5.0 on pci0
pci6: <ACPI PCI bus> on pcib2
pcib3: <PCI-PCI bridge> irq 17 at device 0.0 on pci6
pci7: <PCI bus> on pcib3
siis0: <SiI3124 SATA controller> port 0xdc00-0xdc0f mem
0xfbeffc00-0xfbeffc7f,0xfbef0000-0xfbef7fff irq 17 at device 4.0 on pci7
siis0: [ITHREAD]
siisch0: <SIIS channel> at channel 0 on siis0
siisch0: [ITHREAD]
siisch1: <SIIS channel> at channel 1 on siis0
siisch1: [ITHREAD]
siisch2: <SIIS channel> at channel 2 on siis0
siisch2: [ITHREAD]
siisch3: <SIIS channel> at channel 3 on siis0
siisch3: [ITHREAD]
pcib4: <ACPI PCI-PCI bridge> irq 18 at device 6.0 on pci0
pci5: <ACPI PCI bus> on pcib4
re0: <RealTek
8168/8168B/8168C/8168CP/8168D/8168DP/8111B/8111C/8111CP/8111DP PCIe
Gigabit Ethernet> port 0xc800-0xc8ff mem 0xfbdff000-0xfbdfffff irq 18 at
device 0.0 on pci5
re0: Using 1 MSI messages
re0: Chip rev. 0x38000000
re0: MAC rev. 0x00000000
miibus0: <MII bus> on re0
rgephy0: <RTL8169S/8110S/8211B media interface> PHY 1 on miibus0
rgephy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, 1000baseT,
1000baseT-FDX, auto
re0: Ethernet address: e0:cb:4e:42:f0:ff
re0: [FILTER]
pcib5: <ACPI PCI-PCI bridge> irq 19 at device 7.0 on pci0
pci4: <ACPI PCI bus> on pcib5
fwohci0: <1394 Open Host Controller Interface> port 0xb800-0xb8ff mem
0xfbcff800-0xfbcfffff irq 19 at device 0.0 on pci4
fwohci0: [ITHREAD]
fwohci0: OHCI version 1.10 (ROM=1)
fwohci0: No. of Isochronous channels is 4.
fwohci0: EUI64 00:1e:8c:00:00:c4:3c:f9
fwohci0: Phy 1394a available S400, 2 ports.
fwohci0: Link S400, max_rec 2048 bytes.
firewire0: <IEEE1394(FireWire) bus> on fwohci0
dcons_crom0: <dcons configuration ROM> on firewire0
dcons_crom0: bus_addr 0x1574000
fwe0: <Ethernet over FireWire> on firewire0
if_fwe0: Fake Ethernet address: 02:1e:8c:c4:3c:f9
fwe0: Ethernet address: 02:1e:8c:c4:3c:f9
fwip0: <IP over FireWire> on firewire0
fwip0: Firewire address: 00:1e:8c:00:00:c4:3c:f9 @ 0xfffe00000000, S400,
maxrec 2048
fwohci0: Initiate bus reset
fwohci0: fwohci_intr_core: BUS reset
fwohci0: fwohci_intr_core: node_id=0x00000000, SelfID Count=1,
CYCLEMASTER mode
pcib6: <ACPI PCI-PCI bridge> irq 19 at device 11.0 on pci0
pci2: <ACPI PCI bus> on pcib6
pcib7: <PCI-PCI bridge> irq 19 at device 0.0 on pci2
pci3: <PCI bus> on pcib7
siis1: <SiI3124 SATA controller> port 0xac00-0xac0f mem
0xfbbffc00-0xfbbffc7f,0xfbbf0000-0xfbbf7fff irq 19 at device 4.0 on pci3
siis1: [ITHREAD]
siisch4: <SIIS channel> at channel 0 on siis1
siisch4: [ITHREAD]
siisch5: <SIIS channel> at channel 1 on siis1
siisch5: [ITHREAD]
siisch6: <SIIS channel> at channel 2 on siis1
siisch6: [ITHREAD]
siisch7: <SIIS channel> at channel 3 on siis1
siisch7: [ITHREAD]
ahci0: <ATI IXP700 AHCI SATA controller> port
0x8000-0x8007,0x7000-0x7003,0x6000-0x6007,0x5000-0x5003,0x4000-0x400f
mem 0xfb3fe400-0xfb3fe7ff irq 22 at device 17.0 on pci0
ahci0: [ITHREAD]
ahci0: AHCI v1.10 with 4 3Gbps ports, Port Multiplier supported
ahcich0: <AHCI channel> at channel 0 on ahci0
ahcich0: [ITHREAD]
ahcich1: <AHCI channel> at channel 1 on ahci0
ahcich1: [ITHREAD]
ahcich2: <AHCI channel> at channel 2 on ahci0
ahcich2: [ITHREAD]
ahcich3: <AHCI channel> at channel 3 on ahci0
ahcich3: [ITHREAD]
ohci0: <OHCI (generic) USB controller> mem 0xfb3f6000-0xfb3f6fff irq 16
at device 18.0 on pci0
ohci0: [ITHREAD]
usbus0: <OHCI (generic) USB controller> on ohci0
ohci1: <OHCI (generic) USB controller> mem 0xfb3f7000-0xfb3f7fff irq 16
at device 18.1 on pci0
ohci1: [ITHREAD]
usbus1: <OHCI (generic) USB controller> on ohci1
ehci0: <EHCI (generic) USB 2.0 controller> mem 0xfb3fe800-0xfb3fe8ff irq
17 at device 18.2 on pci0
ehci0: [ITHREAD]
ehci0: AMD SB600/700 quirk applied
usbus2: EHCI version 1.0
usbus2: <EHCI (generic) USB 2.0 controller> on ehci0
ohci2: <OHCI (generic) USB controller> mem 0xfb3fc000-0xfb3fcfff irq 18
at device 19.0 on pci0
ohci2: [ITHREAD]
usbus3: <OHCI (generic) USB controller> on ohci2
ohci3: <OHCI (generic) USB controller> mem 0xfb3fd000-0xfb3fdfff irq 18
at device 19.1 on pci0
ohci3: [ITHREAD]
usbus4: <OHCI (generic) USB controller> on ohci3
ehci1: <EHCI (generic) USB 2.0 controller> mem 0xfb3fec00-0xfb3fecff irq
19 at device 19.2 on pci0
ehci1: [ITHREAD]
ehci1: AMD SB600/700 quirk applied
usbus5: EHCI version 1.0
usbus5: <EHCI (generic) USB 2.0 controller> on ehci1
pci0: <serial bus, SMBus> at device 20.0 (no driver attached)
atapci0: <ATI IXP700/800 UDMA133 controller> port
0x1f0-0x1f7,0x3f6,0x170-0x177,0x376,0xff00-0xff0f at device 20.1 on pci0
ata0: <ATA channel 0> on atapci0
ata0: [ITHREAD]
ata1: <ATA channel 1> on atapci0
ata1: [ITHREAD]
pci0: <multimedia, HDA> at device 20.2 (no driver attached)
isab0: <PCI-ISA bridge> at device 20.3 on pci0
isa0: <ISA bus> on isab0
pcib8: <ACPI PCI-PCI bridge> at device 20.4 on pci0
pci1: <ACPI PCI bus> on pcib8
vgapci0: <VGA-compatible display> mem
0xfb400000-0xfb7fffff,0xfbad0000-0xfbadffff irq 20 at device 5.0 on pci1
ahc0: <Adaptec 2944 Ultra SCSI adapter> port 0x9800-0x98ff mem
0xfbaff000-0xfbafffff irq 21 at device 6.0 on pci1
ahc0: [ITHREAD]
aic7880: Ultra Wide Channel A, SCSI Id=7, 16/253 SCBs
ohci4: <OHCI (generic) USB controller> mem 0xfb3ff000-0xfb3fffff irq 18
at device 20.5 on pci0
ohci4: [ITHREAD]
usbus6: <OHCI (generic) USB controller> on ohci4
acpi_button0: <Power Button> on acpi0
atrtc0: <AT realtime clock> port 0x70-0x71 irq 8 on acpi0
uart0: <16550 or compatible> port 0x3f8-0x3ff irq 4 flags 0x10 on acpi0
uart0: [FILTER]
fdc0: <floppy drive controller (FDE)> port 0x3f0-0x3f5,0x3f7 irq 6 drq 2
on acpi0
fdc0: [FILTER]
atkbdc0: <Keyboard controller (i8042)> port 0x60,0x64 irq 1 on acpi0
atkbd0: <AT Keyboard> irq 1 on atkbdc0
kbd0 at atkbd0
atkbd0: [GIANT-LOCKED]
atkbd0: [ITHREAD]
cpu0: <ACPI CPU> on acpi0
acpi_throttle0: <ACPI CPU Throttling> on cpu0
hwpstate0: <Cool`n'Quiet 2.0> on cpu0
cpu1: <ACPI CPU> on acpi0
cpu2: <ACPI CPU> on acpi0
cpu3: <ACPI CPU> on acpi0
orm0: <ISA Option ROMs> at iomem
0xc0000-0xc7fff,0xc8000-0xc87ff,0xc8800-0xc97ff 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
ppc0: cannot reserve I/O port range
Timecounters tick every 1.000 msec
firewire0: 1 nodes, maxhop <= 0 cable IRM irm(0) (me)
firewire0: bus manager 0
(noperiph:siisch4:0:-1:-1): rescan already queued
(noperiph:siisch5:0:-1:-1): rescan already queued
(noperiph:siisch6:0:-1:-1): rescan already queued
(noperiph:siisch7:0:-1:-1): rescan already queued
(noperiph:siisch0:0:-1:-1): rescan already queued
(noperiph:siisch2:0:-1:-1): rescan already queued
(noperiph:siisch3:0:-1:-1): rescan already queued
usbus0: 12Mbps Full Speed USB v1.0
usbus1: 12Mbps Full Speed USB v1.0
usbus2: 480Mbps High Speed USB v2.0
usbus3: 12Mbps Full Speed USB v1.0
usbus4: 12Mbps Full Speed USB v1.0
usbus5: 480Mbps High Speed USB v2.0
usbus6: 12Mbps Full Speed USB v1.0
ugen0.1: <ATI> at usbus0
uhub0: <ATI OHCI root HUB, class 9/0, rev 1.00/1.00, addr 1> on usbus0
ugen1.1: <ATI> at usbus1
uhub1: <ATI OHCI root HUB, class 9/0, rev 1.00/1.00, addr 1> on usbus1
ugen2.1: <ATI> at usbus2
uhub2: <ATI EHCI root HUB, class 9/0, rev 2.00/1.00, addr 1> on usbus2
ugen3.1: <ATI> at usbus3
uhub3: <ATI OHCI root HUB, class 9/0, rev 1.00/1.00, addr 1> on usbus3
ugen4.1: <ATI> at usbus4
uhub4: <ATI OHCI root HUB, class 9/0, rev 1.00/1.00, addr 1> on usbus4
ugen5.1: <ATI> at usbus5
uhub5: <ATI EHCI root HUB, class 9/0, rev 2.00/1.00, addr 1> on usbus5
ugen6.1: <ATI> at usbus6
uhub6: <ATI OHCI root HUB, class 9/0, rev 1.00/1.00, addr 1> on usbus6
uhub6: 2 ports with 2 removable, self powered
uhub0: 3 ports with 3 removable, self powered
uhub1: 3 ports with 3 removable, self powered
uhub3: 3 ports with 3 removable, self powered
uhub4: 3 ports with 3 removable, self powered
uhub2: 6 ports with 6 removable, self powered
uhub5: 6 ports with 6 removable, self powered
(probe0:ahc0:0:0:0): TEST UNIT READY. CDB: 0 0 0 0 0 0
(probe0:ahc0:0:0:0): CAM status: SCSI Status Error
(probe0:ahc0:0:0:0): SCSI status: Check Condition
(probe0:ahc0:0:0:0): SCSI sense: UNIT ATTENTION asc:29,0 (Power on,
reset, or bus device reset occurred)
(probe5:ahc0:0:5:0): TEST UNIT READY. CDB: 0 0 0 0 0 0
(probe5:ahc0:0:5:0): CAM status: SCSI Status Error
(probe5:ahc0:0:5:0): SCSI status: Check Condition
(probe5:ahc0:0:5:0): SCSI sense: UNIT ATTENTION asc:29,0 (Power on,
reset, or bus device reset occurred)
ada0 at siisch0 bus 0 scbus0 target 0 lun 0
ada0: <Hitachi HDS722020ALA330 JKAOA28A> ATA-8 SATA 2.x device
ada0: 300.000MB/s transfers (SATA 2.x, UDMA6, PIO 8192bytes)
ada0: Command Queueing enabled
ada0: 1907729MB (3907029168 512 byte sectors: 16H 63S/T 16383C)
ada1 at siisch2 bus 0 scbus2 target 0 lun 0
ada1: <Hitachi HDS722020ALA330 JKAOA28A> ATA-8 SATA 2.x device
ada1: 300.000MB/s transfers (SATA 2.x, UDMA6, PIO 8192bytes)
ada1: Command Queueing enabled
ada1: 1907729MB (3907029168 512 byte sectors: 16H 63S/T 16383C)
ada2 at siisch3 bus 0 scbus3 target 0 lun 0
ada2: <Hitachi HDS722020ALA330 JKAOA28A> ATA-8 SATA 2.x device
ada2: 300.000MB/s transfers (SATA 2.x, UDMA6, PIO 8192bytes)
ada2: Command Queueing enabled
ada2: 1907729MB (3907029168 512 byte sectors: 16H 63S/T 16383C)
ada3 at siisch4 bus 0 scbus4 target 0 lun 0
ada3: <Hitachi HDS722020ALA330 JKAOA28A> ATA-8 SATA 2.x devicech0 at
ahc0 bus 0 scbus12 target 0 lun 0
ch0: <DEC TL800 (C) DEC 0326> Removable Changer SCSI-2 device
ch0: 20.000MB/s transfers (10.000MHz, offset 8, 16bit)
ch0: 10 slots, 1 drive, 1 picker, 0 portals
ada3: 300.000MB/s transfers (SATA 2.x, UDMA6, PIO 8192bytes)
ada3: Command Queueing enabled
ada3: 1907729MB (3907029168 512 byte sectors: 16H 63S/T 16383C)
ada4 at siisch5 bus 0 scbus5 target 0 lun 0
ada4: <Hitachi HDS722020ALA330 JKAOA28A> ATA-8 SATA 2.x device
ada4: 300.000MB/s transfers (SATA 2.x, UDMA6, PIO 8192bytes)
ada4: Command Queueing enabled
ada4: 1907729MB (3907029168 512 byte sectors: 16H 63S/T 16383C)
ada5 at siisch6 bus 0 scbus6 target 0 lun 0
ada5: <Hitachi HDS722020ALA330 JKAOA28A> ATA-8 SATA 2.x device
ada5: 300.000MB/s transfers (SATA 2.x, UDMA6, PIO 8192bytes)
ada5: Command Queueing enabled
ada5: 1907729MB (3907029168 512 byte sectors: 16H 63S/T 16383C)
ada6 at siisch7 bus 0 scbus7 target 0 lun 0
ada6: <Hitachi HDS722020ALA330 JKAOA28A> ATA-8 SATA 2.x device
ada6: 300.000MB/s transfers (SATA 2.x, UDMA6, PIO 8192bytes)
ada6: Command Queueing enabled
ada6: 1907729MB (3907029168 512 byte sectors: 16H 63S/T 16383C)
ada7 at ahcich0 bus 0 scbus8 target 0 lun 0
ada7: <ST380815AS 4.AAB> ATA-7 SATA 2.x device
ada7: 300.000MB/s transfers (SATA 2.x, UDMA6, PIO 8192bytes)
ada7: Command Queueing enabled
ada7: 76319MB (156301488 512 byte sectors: 16H 63S/T 16383C)
ada8 at ahcich2 bus 0 scbus10 target 0 lun 0
ada8: <WDC WD1600AAJS-75M0A0 02.03E02> ATA-8 SATA 2.x device
ada8: 300.000MB/s transfers (SATA 2.x, UDMA6, PIO 8192bytes)
ada8: Command Queueing enabled
ada8: 152587MB (312500000 512 byte sectors: 16H 63S/T 16383C)
sa0 at ahc0 bus 0 scbus12 target 5 lun 0
sa0: <DEC TZ89 (C) DEC 1837> Removable Sequential Access SCSI-2 device
sa0: 20.000MB/s transfers (10.000MHz, offset 8, 16bit)
SMP: AP CPU #2 Launched!
cd0 at ahcich1 bus 0 scbus9 target 0 lun 0SMP: AP CPU #1 Launched!
cd0:
<TSSTcorp CDDVDW SH-S223C SB01> Removable CD-ROM SCSI-0 device
cd0: 150.000MB/s transfers (SATA 1.x, UDMA5, ATAPI 12bytes, PIO
8192bytes)SMP: AP CPU #3 Launched!
cd0: Attempt to query device size failed: NOT READY, Medium not present
- tray closed
GEOM_MIRROR: Device mirror/gm0 launched (2/2).
GEOM: mirror/gm0s1: geometry does not match label (16h,63s != 255h,63s).
Trying to mount root from ufs:/dev/mirror/gm0s1a
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 3
ZFS storage pool version 14
--
Dan Langille - http://langille.org/
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