Date: Fri, 22 Mar 2013 10:14:03 -0400 From: Paul Mather <paul@gromit.dlib.vt.edu> To: "stable@FreeBSD.org" <stable@freebsd.org> Subject: Virtio and GEOM labels Message-ID: <D5454720-6D16-4D42-8A13-7E6B29126180@gromit.dlib.vt.edu>
next in thread | raw e-mail | index | archive | help
I'm running FreeBSD 9-STABLE as a guest under RHEL 6.4 KVM =
virtualisation. I have networking and storage in the FreeBSD guest =
using the Virtio drivers (with the virtual disk set to "Virtio" in the =
definition on the host). Everything is working nicely: I have a vtnet =
network adapter and see vtbd devices for my virtual disks in FreeBSD. =
Performance is much better compared with an emulated IDE device.
The odd thing is that I don't see GEOM labels reflected in /dev. For =
example, I have GPT labels defined in the guest, but I don't see them =
show up under /dev/gpt. Similarly, my UFS labels don't show up under =
/dev/ufs. I *do* see a /dev/gptid. That appears to be the only label =
that shows up.
Is there something special I need to do to get GPT and UFS labels to =
appear when using Virtio? It seems to me that Virtio block devices =
appear to be somewhat unusual. Unlike regular ATA and SCSI devices, my =
vtbd devices don't appear in the boot dmesg (although a vtblk device =
does), and "camcontrol devlist" does not list them. It's not clear to =
me how I am supposed to interact with them other than via basic device =
I/O through /dev/vtbdX. I thought that the virtio_scsi module might =
make them appear as "da" devices and able to interacted with via =
camcontrol, but this doesn't seem to be the case.
I've included my system dmesg at the end of this message.
Cheers,
Paul.
=3D=3D=3D=3D=3D
Copyright (c) 1992-2013 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 9.1-STABLE #0 r248465: Mon Mar 18 11:19:23 EDT 2013
pmather@freebsd9.virtual.lib.vt.edu:/usr/obj/usr/src/sys/KVMTEST =
amd64
FreeBSD clang version 3.2 (tags/RELEASE_32/final 170710) 20121221
CPU: QEMU Virtual CPU version (cpu64-rhel6) (2100.15-MHz K8-class CPU)
Origin =3D "AuthenticAMD" Id =3D 0x6d3 Family =3D 0x6 Model =3D 0xd =
Stepping =3D 3
=
Features=3D0x783f3ff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,MTRR,PGE,MCA,=
CMOV,PAT,PSE36,MMX,FXSR,SSE,SSE2>
Features2=3D0x80002001<SSE3,CX16,HV>
AMD Features=3D0x22500800<SYSCALL,NX,MMX+,FFXSR,LM>
AMD Features2=3D0x73<LAHF,CMP,CR8,ABM,SSE4A>
real memory =3D 8589934592 (8192 MB)
avail memory =3D 8255410176 (7872 MB)
Event timer "LAPIC" quality 400
ACPI APIC Table: <BOCHS BXPCAPIC>
FreeBSD/SMP: Multiprocessor System Detected: 2 CPUs
FreeBSD/SMP: 2 package(s) x 1 core(s)
cpu0 (BSP): APIC ID: 0
cpu1 (AP): APIC ID: 1
ioapic0 <Version 1.1> irqs 0-23 on motherboard
kbd1 at kbdmux0
acpi0: <BOCHS BXPCRSDT> on motherboard
acpi0: Power Button (fixed)
cpu0: <ACPI CPU> on acpi0
cpu1: <ACPI CPU> on acpi0
atrtc0: <AT realtime clock> port 0x70-0x71,0x72-0x77 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 0xb008-0xb00b on acpi0
pcib0: <ACPI Host-PCI bridge> port 0xcf8-0xcff on acpi0
pci0: <ACPI PCI bus> on pcib0
pci_link4: Unable to route IRQs: AE_NOT_FOUND
isab0: <PCI-ISA bridge> at device 1.0 on pci0
isa0: <ISA bus> on isab0
atapci0: <Intel PIIX3 WDMA2 controller> port =
0x1f0-0x1f7,0x3f6,0x170-0x177,0x376,0xc000-0xc00f at device 1.1 on pci0
ata0: <ATA channel> at channel 0 on atapci0
ata1: <ATA channel> at channel 1 on atapci0
uhci0: <Intel 82371SB (PIIX3) USB controller> port 0xc020-0xc03f irq 11 =
at device 1.2 on pci0
usbus0: controller did not stop
usbus0 on uhci0
pci0: <bridge> at device 1.3 (no driver attached)
vgapci0: <VGA-compatible display> mem =
0xf0000000-0xf1ffffff,0xf2000000-0xf2000fff at device 2.0 on pci0
virtio_pci0: <VirtIO PCI Network adapter> port 0xc040-0xc05f mem =
0xf2020000-0xf2020fff irq 11 at device 3.0 on pci0
vtnet0: <VirtIO Networking Adapter> on virtio_pci0
virtio_pci0: host features: 0x711fffe3 =
<EventIdx,RingIndirect,NotifyOnEmpty,RxModeExtra,VLanFilter,RxMode,Control=
Vq,Status,MrgRxBuf,TxUFO,TxTSOECN,TxTSOv6,TxTSOv4,RxUFO,RxECN,RxTSOv6,RxTS=
Ov4,TxAllGSO,MacAddress,RxChecksum,TxChecksum>
virtio_pci0: negotiated features: 0x110fbba3 =
<RingIndirect,NotifyOnEmpty,VLanFilter,RxMode,ControlVq,Status,MrgRxBuf,Tx=
TSOECN,TxTSOv6,TxTSOv4,RxECN,RxTSOv6,RxTSOv4,MacAddress,RxChecksum,TxCheck=
sum>
vtnet0: Ethernet address: 52:54:00:3e:48:94
virtio_pci1: <VirtIO PCI Balloon adapter> port 0xc060-0xc07f irq 10 at =
device 5.0 on pci0
vtballoon0: <VirtIO Balloon Adapter> on virtio_pci1
virtio_pci1: host features: 0x71000002 =
<EventIdx,RingIndirect,NotifyOnEmpty,StatsVq>
virtio_pci1: negotiated features: 0x0
virtio_pci2: <VirtIO PCI Block adapter> port 0xc080-0xc0bf mem =
0xf2040000-0xf2040fff irq 10 at device 6.0 on pci0
vtblk0: <VirtIO Block Adapter> on virtio_pci2
virtio_pci2: host features: 0x71000654 =
<EventIdx,RingIndirect,NotifyOnEmpty,Topology,FlushCmd,BlockSize,DiskGeome=
try,MaxNumSegs>
virtio_pci2: negotiated features: 0x10000254 =
<RingIndirect,FlushCmd,BlockSize,DiskGeometry,MaxNumSegs>
vtblk0: 8192MB (16777216 512 byte sectors)
atkbdc0: <Keyboard controller (i8042)> port 0x60,0x64 irq 1 on acpi0
atkbd0: <AT Keyboard> irq 1 on atkbdc0
kbd0 at atkbd0
atkbd0: [GIANT-LOCKED]
psm0: <PS/2 Mouse> irq 12 on atkbdc0
psm0: [GIANT-LOCKED]
psm0: model IntelliMouse Explorer, device ID 4
uart0: <Non-standard ns8250 class UART with FIFOs> port 0x3f8-0x3ff irq =
4 flags 0x10 on acpi0
orm0: <ISA Option ROM> at iomem 0xc9000-0xc97ff on isa0
sc0: <System console> at flags 0x100 on isa0
sc0: VGA <16 virtual consoles, flags=3D0x300>
vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on =
isa0
attimer0: <AT timer> at port 0x40 on isa0
Timecounter "i8254" frequency 1193182 Hz quality 0
Event timer "i8254" frequency 1193182 Hz quality 100
ctl: CAM Target Layer loaded
Timecounters tick every 10.000 msec
usbus0: 12Mbps Full Speed USB v1.0
ugen0.1: <Intel> at usbus0
uhub0: <Intel UHCI root HUB, class 9/0, rev 1.00/1.00, addr 1> on usbus0
cd0 at ata1 bus 0 scbus1 target 0 lun 0
cd0: <QEMU QEMU DVD-ROM 0.12> Removable CD-ROM SCSI-0 device=20
cd0: 16.700MB/s transfers (WDMA2, ATAPI 12bytes, PIO 65534bytes)
cd0: Attempt to query device size failed: NOT READY, Medium not present
SMP: AP CPU #1 Launched!
Root mount waiting for: usbus0
uhub0: 2 ports with 2 removable, self powered
Trying to mount root from ufs:/dev/vtbd0p2 [rw]...
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?D5454720-6D16-4D42-8A13-7E6B29126180>