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From: Marcin Cieslak <saper@saper.info>
To: "Roger Pau Monné" <royger@FreeBSD.org>
Cc: freebsd-xen@FreeBSD.org, freebsd-virtualization@freebsd.org,
	xen-devel@lists.xenproject.org
Subject: Re: HEADS UP: Imported Xen 4.7: no blkback
Date: Fri, 10 Jun 2016 21:38:59 +0000	[thread overview]
Message-ID: <alpine.BSF.2.11.1606102124330.2130__35460.8277245008$1465594846$gmane$org@z.fncre.vasb> (raw)
In-Reply-To: <20160609080343.44rvpda4hskiy3ge@mac>

On Thu, 9 Jun 2016, Roger Pau Monné wrote:

> On Thu, Jun 09, 2016 at 12:16:59AM +0000, Marcin Cieslak wrote:
> > On Fri, 3 Jun 2016, Roger Pau Monné wrote:
> > 
> > > One of the more relevant changes in 4.7 regarding FreeBSD is the support for 
> > > block hotplug scripts. This means that we now have the option to use 
> > > backends different than simple block or regular files, provided that someone 
> > > writes the proper hotplug scripts to attach them (I've heard there are some 
> > > iSCSI hotplug scripts around). This however requires changes in blkback, so 
> > > if you plan to use the Xen 4.7 port, please make sure that you are running a 
> > > kernel that contains revision r301269 (or any later version). The same also 
> > 
> > I am running it with r301685 and the HVM guests have some trouble with
> > block devices.
> > 
> > SeaBIOS does not find /dev/zvol/zroot/freebsd1,raw,xvda,w to boot FreeBSD
> > from, after chaging to "hda" I get up to the kernel mountroot prompt
> > (Xen block devices seem to be detected in dmesg).
> 
> Yes, this is intentional, see:
> 
> https://marc.info/?l=xen-devel&m=144482080812353

those guests worked fine with 4.5, that's why I am surprised.

xbd0 and xbd1 show up in dmesg, mouting root from xbd0p2 fails, but 
ada0p2 seems to work.

I remember that during my previous attempts ZFS ate most of
my machine's memory (dom0 was too small I think) and the
symptom was very similar if not identical.

One thing which struck me is that I was able to fully but
one Linux HVM domU. I am also toying with OpenFirmware
which boots from floppy as a HVM guest.

> Have you checked if you need to change your /etc/fstab to correctly point 
> to the new device? Does FreeBSD correctly list the disk(s) at the mountroot 
> prompt when issuing a "?" command?

"?" does not work - it mostly causes a panic, the console is slow, but I managed
to switch it to /dev/ada0p2, dmesg below:

Copyright (c) 1992-2016 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 11.0-CURRENT #1 r298620: Tue Apr 26 13:21:50 UTC 2016
    root@o.saper.info:/usr/obj/usr/src/sys/GENERIC amd64
FreeBSD clang version 3.8.0 (tags/RELEASE_380/final 262564) (based on LLVM 3.8.0)
WARNING: WITNESS option enabled, expect reduced performance.
VT(vga): text 80x25
XEN: Hypervisor version 4.7 detected.
CPU: Intel(R) Xeon(R) CPU E31245 @ 3.30GHz (3300.08-MHz K8-class CPU)
  Origin="GenuineIntel"  Id=0x206a7  Family=0x6  Model=0x2a  Stepping=7
  Features=0x17c3fbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,ACPI,MMX,FXSR,SSE,SSE2,HTT>
  Features2=0x9fba2203<SSE3,PCLMULQDQ,SSSE3,CX16,PCID,SSE4.1,SSE4.2,x2APIC,POPCNT,TSCDLT,AESNI,XSAVE,OSXSAVE,AVX,HV>
  AMD Features=0x28100800<SYSCALL,NX,RDTSCP,LM>
  AMD Features2=0x1<LAHF>
  XSAVE Features=0x1<XSAVEOPT>
Hypervisor: Origin = "XenVMMXenVMM"
real memory  = 2130706432 (2032 MB)
avail memory = 2018213888 (1924 MB)
Event timer "LAPIC" quality 400
ACPI APIC Table: <Xen HVM>
WARNING: L1 data cache covers less APIC IDs than a core
0 < 1
WARNING: L2 data cache covers less APIC IDs than a core
0 < 1
WARNING: L3 data cache covers less APIC IDs than a core
0 < 1
FreeBSD/SMP: Multiprocessor System Detected: 2 CPUs
FreeBSD/SMP: 1 package(s) x 2 core(s)
random: unblocking device.
ioapic0: Changing APIC ID to 1
MADT: Forcing active-low polarity and level trigger for SCI
ioapic0 <Version 1.1> irqs 0-47 on motherboard
random: entropy device external interface
kbd1 at kbdmux0
netmap: loaded module
module_register_init: MOD_LOAD (vesa, 0xffffffff80f0ffb0, 0) error 19
vtvga0: <VT VGA driver> on motherboard
cryptosoft0: <software crypto> on motherboard
acpi0: <Xen> on motherboard
acpi0: Power Button (fixed)
acpi0: Sleep Button (fixed)
cpu0: <ACPI CPU> on acpi0
cpu1: <ACPI CPU> on acpi0
hpet0: <High Precision Event Timer> iomem 0xfed00000-0xfed003ff on acpi0
Timecounter "HPET" frequency 62500000 Hz quality 950
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: <32-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
isab0: <PCI-ISA bridge> at device 1.0 on pci0
isa0: <ISA bus> on isab0
atapci0: <Intel PIIX3 WDMA2 controller> port 0x1f0-0x1f7,0x3f6,0x170-0x177,0x376,0xc200-0xc20f at device 1.1 on pci0
ata0: <ATA channel> at channel 0 on atapci0
ata1: <ATA channel> at channel 1 on atapci0
pci0: <bridge> at device 1.3 (no driver attached)
xenpci0: <Xen Platform Device> port 0xc000-0xc0ff mem 0xf0000000-0xf0ffffff irq 24 at device 2.0 on pci0
vgapci0: <VGA-compatible display> mem 0xf1000000-0xf1ffffff,0xf2050000-0xf2050fff at device 3.0 on pci0
vgapci0: Boot video device
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
fdc0: <floppy drive controller> port 0x3f0-0x3f5,0x3f7 irq 6 drq 2 on acpi0
fdc0: does not respond
device_attach: fdc0 attach returned 6
xenpv0: <Xen PV bus> on motherboard
granttable0: <Xen Grant-table Device> on xenpv0
xen_et0: <Xen PV Clock> on xenpv0
Event timer "XENTIMER" frequency 1000000000 Hz quality 950
Timecounter "XENTIMER" frequency 1000000000 Hz quality 950
xenstore0: <XenStore> on xenpv0
evtchn0: <Xen event channel user-space device> on xenpv0
privcmd0: <Xen privileged interface user-space device> on xenpv0
debug0: <Xen debug handler> on xenpv0
orm0: <ISA Option ROM> at iomem 0xed800-0xeffff on isa0
vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0
fdc0: No FDOUT register!
ppc0: cannot reserve I/O port range
Timecounters tick every 1.000 msec
xenballoon0: <Xen Balloon Device> on xenstore0
xctrl0: <Xen Control Device> on xenstore0
xs_dev0: <Xenstore user-space device> on xenstore0
xenbusb_front0: <Xen Frontend Devices> on xenstore0
xenbusb_add_device: Device device/suspend/event-channel ignored. State 6
xn0: <Virtual Network Interface> at device/vif/0 on xenbusb_front0
xbd0: 16384MB <Virtual Block Device> at device/vbd/768 on xenbusb_front0
xbd0: attaching as ada0
xbd0: features: flush, write_barrier
xbd0: synchronize cache commands enabled.
xn0: Ethernet address: 00:02:04:08:fd:f0
xenbusb_back0: <Xen Backend Devices> on xenstore0
xbd1: 40960MB <Virtual Block Device> at device/vbd/832 on xenbusb_front0
xbd1: attaching as ada1
xbd1: features: flush, write_barrier
xbd1: synchronize cache commands enabled.
xn0: backend features: feature-sg
SMP: AP CPU #1 Launched!
WARNING: WITNESS option enabled, expect reduced performance.
Trying to mount root from ufs:/dev/xbd0p2 [rw]...
mountroot: waiting for device /dev/xbd0p2...
Mounting from ufs:/dev/xbd0p2 failed with error 19.

Loader variables:
  vfs.root.mountfrom=ufs:/dev/xbd0p2
  vfs.root.mountfrom.options=rw

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> Trying to mount root from ufs:/dev/ada0p2 []...
xn0: link state changed to DOWN
xn0: link state changed to UP

> Also, can you paste the output of `xenstore-ls -fp` from Dom0 when this 
> happens?

Windows:

/tool = ""   (n0)
/tool/xenstored = ""   (n0)
/vm = ""   (n0)
/vm/744e8146-2e7b-11e6-80cd-5404a6685907 = ""   (n0,r279)
/vm/744e8146-2e7b-11e6-80cd-5404a6685907/name = "Windows2016"   (n0,r279)
/vm/744e8146-2e7b-11e6-80cd-5404a6685907/uuid = "744e8146-2e7b-11e6-80cd-5404a6685907"   (n0,r279)
/vm/744e8146-2e7b-11e6-80cd-5404a6685907/rtc = ""   (n0,r279)
/vm/744e8146-2e7b-11e6-80cd-5404a6685907/rtc/timeoffset = ""   (n0,r279)
/vm/744e8146-2e7b-11e6-80cd-5404a6685907/image = ""   (n0,r279)
/vm/744e8146-2e7b-11e6-80cd-5404a6685907/image/ostype = "hvm"   (n0,r279)
/vm/744e8146-2e7b-11e6-80cd-5404a6685907/start_time = "1465501844.89"   (n0,r279)
/libxl = ""   (n0)
/libxl/279 = ""   (n0)
/libxl/279/dm-version = "qemu_xen"   (n0)
/local = ""   (n0)
/local/domain = ""   (n0)
/local/domain/0 = ""   (n0)
/local/domain/0/domid = "0"   (n0)
/local/domain/0/name = "Domain-0"   (n0)
/local/domain/0/device-model = ""   (n0)
/local/domain/0/device-model/279 = ""   (n0)
/local/domain/0/device-model/279/state = "running"   (n0)
/local/domain/0/device-model/279/physmap = ""   (n0)
/local/domain/0/device-model/279/physmap/10f000000 = ""   (n0)
/local/domain/0/device-model/279/physmap/10f000000/start_addr = "f1000000"   (n0)
/local/domain/0/device-model/279/physmap/10f000000/size = "1000000"   (n0)
/local/domain/0/device-model/279/physmap/10f000000/name = "vga.vram"   (n0)
/local/domain/0/backend = ""   (n0)
/local/domain/0/backend/vbd = ""   (n0)
/local/domain/0/backend/vbd/279 = ""   (n0)
/local/domain/0/backend/vbd/279/768 = ""   (n0,r279)
/local/domain/0/backend/vbd/279/768/frontend = "/local/domain/279/device/vbd/768"   (n0,r279)
/local/domain/0/backend/vbd/279/768/params = "/dev/zvol/zroot/windows0"   (n0,r279)
/local/domain/0/backend/vbd/279/768/script = "/usr/local/etc/xen/scripts/block"   (n0,r279)
/local/domain/0/backend/vbd/279/768/frontend-id = "279"   (n0,r279)
/local/domain/0/backend/vbd/279/768/online = "1"   (n0,r279)
/local/domain/0/backend/vbd/279/768/removable = "0"   (n0,r279)
/local/domain/0/backend/vbd/279/768/bootable = "1"   (n0,r279)
/local/domain/0/backend/vbd/279/768/state = "3"   (n0,r279)
/local/domain/0/backend/vbd/279/768/dev = "hda"   (n0,r279)
/local/domain/0/backend/vbd/279/768/type = "phy"   (n0,r279)
/local/domain/0/backend/vbd/279/768/mode = "w"   (n0,r279)
/local/domain/0/backend/vbd/279/768/device-type = "disk"   (n0,r279)
/local/domain/0/backend/vbd/279/768/discard-enable = "1"   (n0,r279)
/local/domain/0/backend/vbd/279/768/feature-barrier = "1"   (n0,r279)
/local/domain/0/backend/vbd/279/768/feature-flush-cache = "1"   (n0,r279)
/local/domain/0/backend/vbd/279/768/max-ring-page-order = "5"   (n0,r279)
/local/domain/0/backend/vbd/279/768/physical-device-path = "/dev/zvol/zroot/windows0"   (n0,r279)
/local/domain/0/backend/vbd/279/768/hotplug-status = "connected"   (n0,r279)
/local/domain/0/backend/vbd/279/832 = ""   (n0,r279)
/local/domain/0/backend/vbd/279/832/frontend = "/local/domain/279/device/vbd/832"   (n0,r279)
/local/domain/0/backend/vbd/279/832/params = "/dev/zvol/zroot/vs2013"   (n0,r279)
/local/domain/0/backend/vbd/279/832/script = "/usr/local/etc/xen/scripts/block"   (n0,r279)
/local/domain/0/backend/vbd/279/832/frontend-id = "279"   (n0,r279)
/local/domain/0/backend/vbd/279/832/online = "1"   (n0,r279)
/local/domain/0/backend/vbd/279/832/removable = "0"   (n0,r279)
/local/domain/0/backend/vbd/279/832/bootable = "1"   (n0,r279)
/local/domain/0/backend/vbd/279/832/state = "3"   (n0,r279)
/local/domain/0/backend/vbd/279/832/dev = "hdb"   (n0,r279)
/local/domain/0/backend/vbd/279/832/type = "phy"   (n0,r279)
/local/domain/0/backend/vbd/279/832/mode = "w"   (n0,r279)
/local/domain/0/backend/vbd/279/832/device-type = "disk"   (n0,r279)
/local/domain/0/backend/vbd/279/832/discard-enable = "1"   (n0,r279)
/local/domain/0/backend/vbd/279/832/feature-barrier = "1"   (n0,r279)
/local/domain/0/backend/vbd/279/832/feature-flush-cache = "1"   (n0,r279)
/local/domain/0/backend/vbd/279/832/max-ring-page-order = "5"   (n0,r279)
/local/domain/0/backend/vbd/279/832/physical-device-path = "/dev/zvol/zroot/vs2013"   (n0,r279)
/local/domain/0/backend/vbd/279/832/hotplug-status = "connected"   (n0,r279)
/local/domain/0/backend/console = ""   (n0)
/local/domain/0/backend/console/279 = ""   (n0)
/local/domain/0/backend/console/279/0 = ""   (n0,r279)
/local/domain/0/backend/console/279/0/frontend = "/local/domain/279/console"   (n0,r279)
/local/domain/0/backend/console/279/0/frontend-id = "279"   (n0,r279)
/local/domain/0/backend/console/279/0/online = "1"   (n0,r279)
/local/domain/0/backend/console/279/0/state = "1"   (n0,r279)
/local/domain/0/backend/console/279/0/protocol = "vt100"   (n0,r279)
/local/domain/0/backend/vkbd = ""   (n0)
/local/domain/0/backend/vkbd/279 = ""   (n0)
/local/domain/0/backend/vkbd/279/0 = ""   (n0,r279)
/local/domain/0/backend/vkbd/279/0/frontend = "/local/domain/279/device/vkbd/0"   (n0,r279)
/local/domain/0/backend/vkbd/279/0/frontend-id = "279"   (n0,r279)
/local/domain/0/backend/vkbd/279/0/online = "1"   (n0,r279)
/local/domain/0/backend/vkbd/279/0/state = "2"   (n0,r279)
/local/domain/0/backend/vkbd/279/0/feature-abs-pointer = "1"   (n0,r279)
/local/domain/0/backend/vkbd/279/0/hotplug-status = "connected"   (n0,r279)
/local/domain/0/backend/vif = ""   (n0)
/local/domain/0/backend/vif/279 = ""   (n0)
/local/domain/0/backend/vif/279/0 = ""   (n0,r279)
/local/domain/0/backend/vif/279/0/frontend = "/local/domain/279/device/vif/0"   (n0,r279)
/local/domain/0/backend/vif/279/0/frontend-id = "279"   (n0,r279)
/local/domain/0/backend/vif/279/0/online = "1"   (n0,r279)
/local/domain/0/backend/vif/279/0/state = "2"   (n0,r279)
/local/domain/0/backend/vif/279/0/script = "/usr/local/etc/xen/scripts/vif-bridge"   (n0,r279)
/local/domain/0/backend/vif/279/0/mac = "00:16:3e:5d:0d:48"   (n0,r279)
/local/domain/0/backend/vif/279/0/bridge = "bridge0"   (n0,r279)
/local/domain/0/backend/vif/279/0/handle = "0"   (n0,r279)
/local/domain/0/backend/vif/279/0/type = "vif_ioemu"   (n0,r279)
/local/domain/0/backend/vif/279/0/hotplug-status = "connected"   (n0,r279)
/local/domain/0/backend/vif/279/0/feature-sg = "1"   (n0,r279)
/local/domain/0/backend/vif/279/0/feature-gso-tcpv4 = "0"   (n0,r279)
/local/domain/0/backend/vif/279/0/feature-rx-copy = "1"   (n0,r279)
/local/domain/0/backend/vif/279/0/feature-rx-flip = "0"   (n0,r279)
/local/domain/279 = ""   (n0,r279)
/local/domain/279/vm = "/vm/744e8146-2e7b-11e6-80cd-5404a6685907"   (n0,r279)
/local/domain/279/name = "Windows2016"   (n0,r279)
/local/domain/279/cpu = ""   (n0,r279)
/local/domain/279/cpu/0 = ""   (n0,r279)
/local/domain/279/cpu/0/availability = "online"   (n0,r279)
/local/domain/279/cpu/1 = ""   (n0,r279)
/local/domain/279/cpu/1/availability = "online"   (n0,r279)
/local/domain/279/memory = ""   (n0,r279)
/local/domain/279/memory/static-max = "4194304"   (n0,r279)
/local/domain/279/memory/target = "4177920"   (n0,r279)
/local/domain/279/memory/videoram = "16384"   (n0,r279)
/local/domain/279/device = ""   (n0,r279)
/local/domain/279/device/suspend = ""   (n0,r279)
/local/domain/279/device/suspend/event-channel = ""   (n279)
/local/domain/279/device/vbd = ""   (n0,r279)
/local/domain/279/device/vbd/768 = ""   (n279,r0)
/local/domain/279/device/vbd/768/backend = "/local/domain/0/backend/vbd/279/768"   (n279,r0)
/local/domain/279/device/vbd/768/backend-id = "0"   (n279,r0)
/local/domain/279/device/vbd/768/state = "1"   (n279,r0)
/local/domain/279/device/vbd/768/virtual-device = "768"   (n279,r0)
/local/domain/279/device/vbd/768/device-type = "disk"   (n279,r0)
/local/domain/279/device/vbd/832 = ""   (n279,r0)
/local/domain/279/device/vbd/832/backend = "/local/domain/0/backend/vbd/279/832"   (n279,r0)
/local/domain/279/device/vbd/832/backend-id = "0"   (n279,r0)
/local/domain/279/device/vbd/832/state = "1"   (n279,r0)
/local/domain/279/device/vbd/832/virtual-device = "832"   (n279,r0)
/local/domain/279/device/vbd/832/device-type = "disk"   (n279,r0)
/local/domain/279/device/vkbd = ""   (n0,r279)
/local/domain/279/device/vkbd/0 = ""   (n279,r0)
/local/domain/279/device/vkbd/0/backend = "/local/domain/0/backend/vkbd/279/0"   (n279,r0)
/local/domain/279/device/vkbd/0/backend-id = "0"   (n279,r0)
/local/domain/279/device/vkbd/0/state = "1"   (n279,r0)
/local/domain/279/device/vif = ""   (n0,r279)
/local/domain/279/device/vif/0 = ""   (n279,r0)
/local/domain/279/device/vif/0/backend = "/local/domain/0/backend/vif/279/0"   (n279,r0)
/local/domain/279/device/vif/0/backend-id = "0"   (n279,r0)
/local/domain/279/device/vif/0/state = "1"   (n279,r0)
/local/domain/279/device/vif/0/handle = "0"   (n279,r0)
/local/domain/279/device/vif/0/mac = "00:16:3e:5d:0d:48"   (n279,r0)
/local/domain/279/control = ""   (n0,r279)
/local/domain/279/control/shutdown = ""   (n279)
/local/domain/279/control/platform-feature-multiprocessor-suspend = "1"   (n0,r279)
/local/domain/279/control/platform-feature-xs_reset_watches = "1"   (n0,r279)
/local/domain/279/hvmloader = ""   (n0,r279)
/local/domain/279/hvmloader/bios = "ovmf"   (n0,r279)
/local/domain/279/hvmloader/allow-memory-relocate = "0"   (n0,r279)
/local/domain/279/data = ""   (n279)
/local/domain/279/drivers = ""   (n279)
/local/domain/279/feature = ""   (n279)
/local/domain/279/attr = ""   (n279)
/local/domain/279/domid = "279"   (n0,r279)
/local/domain/279/store = ""   (n0,r279)
/local/domain/279/store/port = "1"   (n0,r279)
/local/domain/279/store/ring-ref = "1044476"   (n0,r279)
/local/domain/279/platform = ""   (n0,r279)
/local/domain/279/platform/acpi = "1"   (n0,r279)
/local/domain/279/platform/acpi_s3 = "1"   (n0,r279)
/local/domain/279/platform/acpi_s4 = "1"   (n0,r279)
/local/domain/279/console = ""   (n0,r279)
/local/domain/279/console/backend = "/local/domain/0/backend/console/279/0"   (n0,r279)
/local/domain/279/console/backend-id = "0"   (n279,r0)
/local/domain/279/console/limit = "1048576"   (n0,r279)
/local/domain/279/console/type = "xenconsoled"   (n0,r279)
/local/domain/279/console/output = "pty"   (n0,r279)
/local/domain/279/console/tty = "/dev/pts/1"   (n0,r279)
/local/domain/279/console/port = "2"   (n0,r279)
/local/domain/279/console/ring-ref = "1044479"   (n0,r279)
/local/domain/279/console/vnc-listen = "127.0.0.1"   (n0,r279)
/local/domain/279/console/vnc-port = "5900"   (n0,r279)
/local/domain/279/image = ""   (n0,r279)
/local/domain/279/image/device-model-pid = "78745"   (n0,r279)

FreeBSD:

/tool = ""   (n0)
/tool/xenstored = ""   (n0)
/vm = ""   (n0)
/vm/faefcbb0-2e7b-11e6-80cd-5404a6685907 = ""   (n0,r281)
/vm/faefcbb0-2e7b-11e6-80cd-5404a6685907/name = "FreeBSD"   (n0,r281)
/vm/faefcbb0-2e7b-11e6-80cd-5404a6685907/uuid = "faefcbb0-2e7b-11e6-80cd-5404a6685907"   (n0,r281)
/vm/faefcbb0-2e7b-11e6-80cd-5404a6685907/rtc = ""   (n0,r281)
/vm/faefcbb0-2e7b-11e6-80cd-5404a6685907/rtc/timeoffset = ""   (n0,r281)
/vm/faefcbb0-2e7b-11e6-80cd-5404a6685907/image = ""   (n0,r281)
/vm/faefcbb0-2e7b-11e6-80cd-5404a6685907/image/ostype = "hvm"   (n0,r281)
/vm/faefcbb0-2e7b-11e6-80cd-5404a6685907/start_time = "1465502070.75"   (n0,r281)
/vm/7bbb396a-2f43-11e6-8abe-5404a6685907 = ""   (n0,r11)
/vm/7bbb396a-2f43-11e6-8abe-5404a6685907/name = "FreeBSD"   (n0,r11)
/vm/7bbb396a-2f43-11e6-8abe-5404a6685907/uuid = "7bbb396a-2f43-11e6-8abe-5404a6685907"   (n0,r11)
/vm/7bbb396a-2f43-11e6-8abe-5404a6685907/rtc = ""   (n0,r11)
/vm/7bbb396a-2f43-11e6-8abe-5404a6685907/rtc/timeoffset = ""   (n0,r11)
/vm/7bbb396a-2f43-11e6-8abe-5404a6685907/image = ""   (n0,r11)
/vm/7bbb396a-2f43-11e6-8abe-5404a6685907/image/ostype = "hvm"   (n0,r11)
/vm/7bbb396a-2f43-11e6-8abe-5404a6685907/start_time = "1465587756.69"   (n0,r11)
/libxl = ""   (n0)
/libxl/281 = ""   (n0)
/libxl/281/dm-version = "qemu_xen"   (n0)
/libxl/11 = ""   (n0)
/libxl/11/dm-version = "qemu_xen"   (n0)
/local = ""   (n0)
/local/domain = ""   (n0)
/local/domain/0 = ""   (n0)
/local/domain/0/domid = "0"   (n0)
/local/domain/0/name = "Domain-0"   (n0)
/local/domain/0/device-model = ""   (n0)
/local/domain/0/device-model/11 = ""   (n0)
/local/domain/0/device-model/11/state = "running"   (n0)
/local/domain/0/device-model/11/physmap = ""   (n0)
/local/domain/0/device-model/11/physmap/7f000000 = ""   (n0)
/local/domain/0/device-model/11/physmap/7f000000/start_addr = "f1000000"   (n0)
/local/domain/0/device-model/11/physmap/7f000000/size = "1000000"   (n0)
/local/domain/0/device-model/11/physmap/7f000000/name = "vga.vram"   (n0)
/local/domain/0/backend = ""   (n0)
/local/domain/0/backend/vbd = ""   (n0)
/local/domain/0/backend/vbd/11 = ""   (n0)
/local/domain/0/backend/vbd/11/768 = ""   (n0,r11)
/local/domain/0/backend/vbd/11/768/frontend = "/local/domain/11/device/vbd/768"   (n0,r11)
/local/domain/0/backend/vbd/11/768/params = "/dev/zvol/zroot/freebsd1"   (n0,r11)
/local/domain/0/backend/vbd/11/768/script = "/usr/local/etc/xen/scripts/block"   (n0,r11)
/local/domain/0/backend/vbd/11/768/frontend-id = "11"   (n0,r11)
/local/domain/0/backend/vbd/11/768/online = "1"   (n0,r11)
/local/domain/0/backend/vbd/11/768/removable = "0"   (n0,r11)
/local/domain/0/backend/vbd/11/768/bootable = "1"   (n0,r11)
/local/domain/0/backend/vbd/11/768/state = "4"   (n0,r11)
/local/domain/0/backend/vbd/11/768/dev = "hda"   (n0,r11)
/local/domain/0/backend/vbd/11/768/type = "phy"   (n0,r11)
/local/domain/0/backend/vbd/11/768/mode = "w"   (n0,r11)
/local/domain/0/backend/vbd/11/768/device-type = "disk"   (n0,r11)
/local/domain/0/backend/vbd/11/768/discard-enable = "1"   (n0,r11)
/local/domain/0/backend/vbd/11/768/feature-barrier = "1"   (n0,r11)
/local/domain/0/backend/vbd/11/768/feature-flush-cache = "1"   (n0,r11)
/local/domain/0/backend/vbd/11/768/max-ring-page-order = "5"   (n0,r11)
/local/domain/0/backend/vbd/11/768/physical-device-path = "/dev/zvol/zroot/freebsd1"   (n0,r11)
/local/domain/0/backend/vbd/11/768/hotplug-status = "connected"   (n0,r11)
/local/domain/0/backend/vbd/11/768/sectors = "33554432"   (n0,r11)
/local/domain/0/backend/vbd/11/768/info = "0"   (n0,r11)
/local/domain/0/backend/vbd/11/768/sector-size = "512"   (n0,r11)
/local/domain/0/backend/vbd/11/832 = ""   (n0,r11)
/local/domain/0/backend/vbd/11/832/frontend = "/local/domain/11/device/vbd/832"   (n0,r11)
/local/domain/0/backend/vbd/11/832/params = "/dev/zvol/zroot/freebsd2"   (n0,r11)
/local/domain/0/backend/vbd/11/832/script = "/usr/local/etc/xen/scripts/block"   (n0,r11)
/local/domain/0/backend/vbd/11/832/frontend-id = "11"   (n0,r11)
/local/domain/0/backend/vbd/11/832/online = "1"   (n0,r11)
/local/domain/0/backend/vbd/11/832/removable = "0"   (n0,r11)
/local/domain/0/backend/vbd/11/832/bootable = "1"   (n0,r11)
/local/domain/0/backend/vbd/11/832/state = "4"   (n0,r11)
/local/domain/0/backend/vbd/11/832/dev = "hdb"   (n0,r11)
/local/domain/0/backend/vbd/11/832/type = "phy"   (n0,r11)
/local/domain/0/backend/vbd/11/832/mode = "w"   (n0,r11)
/local/domain/0/backend/vbd/11/832/device-type = "disk"   (n0,r11)
/local/domain/0/backend/vbd/11/832/discard-enable = "1"   (n0,r11)
/local/domain/0/backend/vbd/11/832/feature-barrier = "1"   (n0,r11)
/local/domain/0/backend/vbd/11/832/feature-flush-cache = "1"   (n0,r11)
/local/domain/0/backend/vbd/11/832/max-ring-page-order = "5"   (n0,r11)
/local/domain/0/backend/vbd/11/832/physical-device-path = "/dev/zvol/zroot/freebsd2"   (n0,r11)
/local/domain/0/backend/vbd/11/832/hotplug-status = "connected"   (n0,r11)
/local/domain/0/backend/vbd/11/832/sectors = "83886080"   (n0,r11)
/local/domain/0/backend/vbd/11/832/info = "0"   (n0,r11)
/local/domain/0/backend/vbd/11/832/sector-size = "512"   (n0,r11)
/local/domain/0/backend/console = ""   (n0)
/local/domain/0/backend/console/11 = ""   (n0)
/local/domain/0/backend/console/11/0 = ""   (n0,r11)
/local/domain/0/backend/console/11/0/frontend = "/local/domain/11/console"   (n0,r11)
/local/domain/0/backend/console/11/0/frontend-id = "11"   (n0,r11)
/local/domain/0/backend/console/11/0/online = "1"   (n0,r11)
/local/domain/0/backend/console/11/0/state = "1"   (n0,r11)
/local/domain/0/backend/console/11/0/protocol = "vt100"   (n0,r11)
/local/domain/0/backend/vkbd = ""   (n0)
/local/domain/0/backend/vkbd/11 = ""   (n0)
/local/domain/0/backend/vkbd/11/0 = ""   (n0,r11)
/local/domain/0/backend/vkbd/11/0/frontend = "/local/domain/11/device/vkbd/0"   (n0,r11)
/local/domain/0/backend/vkbd/11/0/frontend-id = "11"   (n0,r11)
/local/domain/0/backend/vkbd/11/0/online = "1"   (n0,r11)
/local/domain/0/backend/vkbd/11/0/state = "2"   (n0,r11)
/local/domain/0/backend/vkbd/11/0/feature-abs-pointer = "1"   (n0,r11)
/local/domain/0/backend/vkbd/11/0/hotplug-status = "connected"   (n0,r11)
/local/domain/0/backend/vif = ""   (n0)
/local/domain/0/backend/vif/11 = ""   (n0)
/local/domain/0/backend/vif/11/0 = ""   (n0,r11)
/local/domain/0/backend/vif/11/0/frontend = "/local/domain/11/device/vif/0"   (n0,r11)
/local/domain/0/backend/vif/11/0/frontend-id = "11"   (n0,r11)
/local/domain/0/backend/vif/11/0/online = "1"   (n0,r11)
/local/domain/0/backend/vif/11/0/state = "4"   (n0,r11)
/local/domain/0/backend/vif/11/0/script = "/usr/local/etc/xen/scripts/vif-bridge"   (n0,r11)
/local/domain/0/backend/vif/11/0/mac = "00:02:04:08:fd:f0"   (n0,r11)
/local/domain/0/backend/vif/11/0/bridge = "bridge0"   (n0,r11)
/local/domain/0/backend/vif/11/0/handle = "0"   (n0,r11)
/local/domain/0/backend/vif/11/0/type = "vif_ioemu"   (n0,r11)
/local/domain/0/backend/vif/11/0/hotplug-status = "connected"   (n0,r11)
/local/domain/0/backend/vif/11/0/feature-sg = "1"   (n0,r11)
/local/domain/0/backend/vif/11/0/feature-gso-tcpv4 = "0"   (n0,r11)
/local/domain/0/backend/vif/11/0/feature-rx-copy = "1"   (n0,r11)
/local/domain/0/backend/vif/11/0/feature-rx-flip = "0"   (n0,r11)
/local/domain/11 = ""   (n0,r11)
/local/domain/11/vm = "/vm/7bbb396a-2f43-11e6-8abe-5404a6685907"   (n0,r11)
/local/domain/11/name = "FreeBSD"   (n0,r11)
/local/domain/11/cpu = ""   (n0,r11)
/local/domain/11/cpu/0 = ""   (n0,r11)
/local/domain/11/cpu/0/availability = "online"   (n0,r11)
/local/domain/11/cpu/1 = ""   (n0,r11)
/local/domain/11/cpu/1/availability = "online"   (n0,r11)
/local/domain/11/memory = ""   (n0,r11)
/local/domain/11/memory/static-max = "2097152"   (n0,r11)
/local/domain/11/memory/target = "2080768"   (n0,r11)
/local/domain/11/memory/videoram = "16384"   (n0,r11)
/local/domain/11/device = ""   (n0,r11)
/local/domain/11/device/suspend = ""   (n0,r11)
/local/domain/11/device/suspend/event-channel = ""   (n11)
/local/domain/11/device/vbd = ""   (n0,r11)
/local/domain/11/device/vbd/768 = ""   (n11,r0)
/local/domain/11/device/vbd/768/backend = "/local/domain/0/backend/vbd/11/768"   (n11,r0)
/local/domain/11/device/vbd/768/backend-id = "0"   (n11,r0)
/local/domain/11/device/vbd/768/state = "4"   (n11,r0)
/local/domain/11/device/vbd/768/virtual-device = "768"   (n11,r0)
/local/domain/11/device/vbd/768/device-type = "disk"   (n11,r0)
/local/domain/11/device/vbd/768/ring-ref0 = "8"   (n11,r0)
/local/domain/11/device/vbd/768/ring-ref1 = "9"   (n11,r0)
/local/domain/11/device/vbd/768/ring-ref2 = "10"   (n11,r0)
/local/domain/11/device/vbd/768/ring-ref3 = "11"   (n11,r0)
/local/domain/11/device/vbd/768/ring-ref4 = "12"   (n11,r0)
/local/domain/11/device/vbd/768/ring-ref5 = "13"   (n11,r0)
/local/domain/11/device/vbd/768/ring-ref6 = "14"   (n11,r0)
/local/domain/11/device/vbd/768/ring-ref7 = "15"   (n11,r0)
/local/domain/11/device/vbd/768/ring-ref8 = "16"   (n11,r0)
/local/domain/11/device/vbd/768/ring-ref9 = "17"   (n11,r0)
/local/domain/11/device/vbd/768/ring-ref10 = "18"   (n11,r0)
/local/domain/11/device/vbd/768/ring-ref11 = "19"   (n11,r0)
/local/domain/11/device/vbd/768/ring-ref12 = "20"   (n11,r0)
/local/domain/11/device/vbd/768/ring-ref13 = "21"   (n11,r0)
/local/domain/11/device/vbd/768/ring-ref14 = "22"   (n11,r0)
/local/domain/11/device/vbd/768/ring-ref15 = "23"   (n11,r0)
/local/domain/11/device/vbd/768/ring-ref16 = "24"   (n11,r0)
/local/domain/11/device/vbd/768/ring-ref17 = "25"   (n11,r0)
/local/domain/11/device/vbd/768/ring-ref18 = "26"   (n11,r0)
/local/domain/11/device/vbd/768/ring-ref19 = "27"   (n11,r0)
/local/domain/11/device/vbd/768/ring-ref20 = "28"   (n11,r0)
/local/domain/11/device/vbd/768/ring-ref21 = "29"   (n11,r0)
/local/domain/11/device/vbd/768/ring-ref22 = "30"   (n11,r0)
/local/domain/11/device/vbd/768/ring-ref23 = "31"   (n11,r0)
/local/domain/11/device/vbd/768/ring-ref24 = "32"   (n11,r0)
/local/domain/11/device/vbd/768/ring-ref25 = "33"   (n11,r0)
/local/domain/11/device/vbd/768/ring-ref26 = "34"   (n11,r0)
/local/domain/11/device/vbd/768/ring-ref27 = "35"   (n11,r0)
/local/domain/11/device/vbd/768/ring-ref28 = "36"   (n11,r0)
/local/domain/11/device/vbd/768/ring-ref29 = "37"   (n11,r0)
/local/domain/11/device/vbd/768/ring-ref30 = "38"   (n11,r0)
/local/domain/11/device/vbd/768/ring-ref31 = "39"   (n11,r0)
/local/domain/11/device/vbd/768/num-ring-pages = "32"   (n11,r0)
/local/domain/11/device/vbd/768/ring-page-order = "5"   (n11,r0)
/local/domain/11/device/vbd/768/event-channel = "10"   (n11,r0)
/local/domain/11/device/vbd/768/protocol = "x86_64-abi"   (n11,r0)
/local/domain/11/device/vbd/832 = ""   (n11,r0)
/local/domain/11/device/vbd/832/backend = "/local/domain/0/backend/vbd/11/832"   (n11,r0)
/local/domain/11/device/vbd/832/backend-id = "0"   (n11,r0)
/local/domain/11/device/vbd/832/state = "4"   (n11,r0)
/local/domain/11/device/vbd/832/virtual-device = "832"   (n11,r0)
/local/domain/11/device/vbd/832/device-type = "disk"   (n11,r0)
/local/domain/11/device/vbd/832/ring-ref0 = "40"   (n11,r0)
/local/domain/11/device/vbd/832/ring-ref1 = "41"   (n11,r0)
/local/domain/11/device/vbd/832/ring-ref2 = "42"   (n11,r0)
/local/domain/11/device/vbd/832/ring-ref3 = "43"   (n11,r0)
/local/domain/11/device/vbd/832/ring-ref4 = "44"   (n11,r0)
/local/domain/11/device/vbd/832/ring-ref5 = "45"   (n11,r0)
/local/domain/11/device/vbd/832/ring-ref6 = "46"   (n11,r0)
/local/domain/11/device/vbd/832/ring-ref7 = "47"   (n11,r0)
/local/domain/11/device/vbd/832/ring-ref8 = "48"   (n11,r0)
/local/domain/11/device/vbd/832/ring-ref9 = "49"   (n11,r0)
/local/domain/11/device/vbd/832/ring-ref10 = "50"   (n11,r0)
/local/domain/11/device/vbd/832/ring-ref11 = "51"   (n11,r0)
/local/domain/11/device/vbd/832/ring-ref12 = "52"   (n11,r0)
/local/domain/11/device/vbd/832/ring-ref13 = "53"   (n11,r0)
/local/domain/11/device/vbd/832/ring-ref14 = "54"   (n11,r0)
/local/domain/11/device/vbd/832/ring-ref15 = "55"   (n11,r0)
/local/domain/11/device/vbd/832/ring-ref16 = "56"   (n11,r0)
/local/domain/11/device/vbd/832/ring-ref17 = "57"   (n11,r0)
/local/domain/11/device/vbd/832/ring-ref18 = "58"   (n11,r0)
/local/domain/11/device/vbd/832/ring-ref19 = "59"   (n11,r0)
/local/domain/11/device/vbd/832/ring-ref20 = "60"   (n11,r0)
/local/domain/11/device/vbd/832/ring-ref21 = "61"   (n11,r0)
/local/domain/11/device/vbd/832/ring-ref22 = "62"   (n11,r0)
/local/domain/11/device/vbd/832/ring-ref23 = "63"   (n11,r0)
/local/domain/11/device/vbd/832/ring-ref24 = "64"   (n11,r0)
/local/domain/11/device/vbd/832/ring-ref25 = "65"   (n11,r0)
/local/domain/11/device/vbd/832/ring-ref26 = "66"   (n11,r0)
/local/domain/11/device/vbd/832/ring-ref27 = "67"   (n11,r0)
/local/domain/11/device/vbd/832/ring-ref28 = "68"   (n11,r0)
/local/domain/11/device/vbd/832/ring-ref29 = "69"   (n11,r0)
/local/domain/11/device/vbd/832/ring-ref30 = "70"   (n11,r0)
/local/domain/11/device/vbd/832/ring-ref31 = "71"   (n11,r0)
/local/domain/11/device/vbd/832/num-ring-pages = "32"   (n11,r0)
/local/domain/11/device/vbd/832/ring-page-order = "5"   (n11,r0)
/local/domain/11/device/vbd/832/event-channel = "11"   (n11,r0)
/local/domain/11/device/vbd/832/protocol = "x86_64-abi"   (n11,r0)
/local/domain/11/device/vkbd = ""   (n0,r11)
/local/domain/11/device/vkbd/0 = ""   (n11,r0)
/local/domain/11/device/vkbd/0/backend = "/local/domain/0/backend/vkbd/11/0"   (n11,r0)
/local/domain/11/device/vkbd/0/backend-id = "0"   (n11,r0)
/local/domain/11/device/vkbd/0/state = "1"   (n11,r0)
/local/domain/11/device/vif = ""   (n0,r11)
/local/domain/11/device/vif/0 = ""   (n11,r0)
/local/domain/11/device/vif/0/backend = "/local/domain/0/backend/vif/11/0"   (n11,r0)
/local/domain/11/device/vif/0/backend-id = "0"   (n11,r0)
/local/domain/11/device/vif/0/state = "4"   (n11,r0)
/local/domain/11/device/vif/0/handle = "0"   (n11,r0)
/local/domain/11/device/vif/0/mac = "00:02:04:08:fd:f0"   (n11,r0)
/local/domain/11/device/vif/0/tx-ring-ref = "768"   (n11,r0)
/local/domain/11/device/vif/0/rx-ring-ref = "329"   (n11,r0)
/local/domain/11/device/vif/0/event-channel = "12"   (n11,r0)
/local/domain/11/device/vif/0/request-rx-copy = "1"   (n11,r0)
/local/domain/11/device/vif/0/feature-rx-notify = "1"   (n11,r0)
/local/domain/11/device/vif/0/feature-sg = "1"   (n11,r0)
/local/domain/11/device/vif/0/feature-gso-tcpv4 = "1"   (n11,r0)
/local/domain/11/control = ""   (n0,r11)
/local/domain/11/control/shutdown = ""   (n11)
/local/domain/11/control/platform-feature-multiprocessor-suspend = "1"   (n0,r11)
/local/domain/11/control/platform-feature-xs_reset_watches = "1"   (n0,r11)
/local/domain/11/hvmloader = ""   (n0,r11)
/local/domain/11/hvmloader/bios = "seabios"   (n0,r11)
/local/domain/11/hvmloader/allow-memory-relocate = "0"   (n0,r11)
/local/domain/11/data = ""   (n11)
/local/domain/11/drivers = ""   (n11)
/local/domain/11/feature = ""   (n11)
/local/domain/11/attr = ""   (n11)
/local/domain/11/domid = "11"   (n0,r11)
/local/domain/11/store = ""   (n0,r11)
/local/domain/11/store/port = "1"   (n0,r11)
/local/domain/11/store/ring-ref = "1044476"   (n0,r11)
/local/domain/11/platform = ""   (n0,r11)
/local/domain/11/platform/acpi = "1"   (n0,r11)
/local/domain/11/platform/acpi_s3 = "1"   (n0,r11)
/local/domain/11/platform/acpi_s4 = "1"   (n0,r11)
/local/domain/11/console = ""   (n0,r11)
/local/domain/11/console/backend = "/local/domain/0/backend/console/11/0"   (n0,r11)
/local/domain/11/console/backend-id = "0"   (n11,r0)
/local/domain/11/console/limit = "1048576"   (n0,r11)
/local/domain/11/console/type = "xenconsoled"   (n0,r11)
/local/domain/11/console/output = "pty"   (n0,r11)
/local/domain/11/console/tty = "/dev/pts/1"   (n0,r11)
/local/domain/11/console/port = "2"   (n0,r11)
/local/domain/11/console/ring-ref = "1044479"   (n0,r11)
/local/domain/11/console/vnc-listen = "127.0.0.1"   (n0,r11)
/local/domain/11/console/vnc-port = "5900"   (n0,r11)
/local/domain/11/image = ""   (n0,r11)
/local/domain/11/image/device-model-pid = "6311"   (n0,r11)

> > What used to be Windows 2016 domU with /dev/zvol/zroot/windows0,raw,hda,w
> > ends up in the Tianocore UEFI shell. Block devices seem to be available,
> > I can even list the fs0: partition, but no booting further possible.
> 
> Hm, I've never used Tianocore myself, so I'm not sure what the issue could 
> be here. Again, can you post the output of `xenstore-ls -fp` from Dom0 when 
> this happens? At least this will show if the PV block device has been 
> correctly attached.

See above.

How do I rollback to 4.5.2, do I need to downgrade the FreeBSD kernel
as well?

Marcin

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Xen-devel@lists.xen.org
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  parent reply	other threads:[~2016-06-10 21:39 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20160603120921.y5l362zgrhf4fdcb@mac>
2016-06-08 22:18 ` HEADS UP: Imported Xen 4.7 and blkback changes Marcin Cieslak
     [not found] ` <alpine.BSF.2.11.1606082204080.2130@z.fncre.vasb>
2016-06-08 22:35   ` HEADS UP: Imported Xen 4.7 and blkback changes - domU respawning on_crash Marcin Cieslak
2016-06-09  7:40   ` HEADS UP: Imported Xen 4.7 and blkback changes Roger Pau Monné
     [not found]   ` <alpine.BSF.2.11.1606082229190.2130@z.fncre.vasb>
2016-06-09  7:44     ` HEADS UP: Imported Xen 4.7 and blkback changes - domU respawning on_crash Roger Pau Monné
     [not found]   ` <20160609074021.uqtjio2vn7wo5h4m@mac>
2016-06-10 21:41     ` HEADS UP: Imported Xen 4.7 and blkback changes Marcin Cieslak
     [not found]     ` <alpine.BSF.2.11.1606102140290.2130@z.fncre.vasb>
2016-06-13  9:22       ` Roger Pau Monné
2016-06-09  0:16 ` HEADS UP: Imported Xen 4.7: no blkback Marcin Cieslak
     [not found] ` <alpine.BSF.2.11.1606090010280.2130@z.fncre.vasb>
2016-06-09  8:03   ` Roger Pau Monné
     [not found]   ` <20160609080343.44rvpda4hskiy3ge@mac>
2016-06-09  9:07     ` Wei Liu
2016-06-10 21:38     ` Marcin Cieslak [this message]
     [not found]     ` <alpine.BSF.2.11.1606102124330.2130@z.fncre.vasb>
2016-06-13  9:10       ` Roger Pau Monné
     [not found]       ` <20160613091003.cejnbuqepp25zanc@mac>
2016-06-13  9:44         ` Marcin Cieslak
2016-06-13 19:26         ` Marcin Cieslak
     [not found]         ` <alpine.BSF.2.11.1606131922240.2130@z.fncre.vasb>
2016-06-16 15:29           ` Roger Pau Monné
     [not found]           ` <20160616152919.3nelncwerh3nir27@mac>
2016-06-16 17:05             ` Marcin Cieslak

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