Hi Paolo,

I was looking for documentation on the limits of #controllers,
#channels, #targets, #LUNs, #disks in virtio-scsi, and couldn't find
any, so I thought I would create that documentation instead.  I wonder
if you could check that the following is correct information.  Also -
at the bottom of the email - a puzzling problem or bug.

At the libvirt level, we refer to virtio-scsi disks using:

  <devices>
    <controller type="scsi" index="0" model="virtio-scsi"/>
    ...
    <disk device="disk" type="file">
      <source file="disk.img"/>
      <target dev="sda" bus="scsi"/>
      <driver name="qemu" type="raw"/>
      <address type="drive" controller="0" bus="0" target="0" unit="0"/>
    </disk>

On the qemu command line, the controller becomes:

  -device virtio-scsi-pci,id=scsi0,bus=pci.0,addr=0x2

(For Q35, it would specify a PCIe bus and the address would also be a
bit different).

On the qemu command line, the disk becomes:

  -drive file=disk.img,format=raw,if=none,id=drive-scsi0-0-0-0
  -device 
scsi-hd,bus=scsi0.0,channel=0,scsi-id=0,lun=0,drive=drive-scsi0-0-0-0,id=scsi0-0-0-0,bootindex=1

In libvirt <address ... controller="0"> refers back to the
<controller index="0"/> element.  You can add more than one
virtio-scsi controller, but each one takes a PCI slot, and the number
of PCI slots can be limited (or on Q35, there are no effective limits
but there are other architectural constraints).

In libvirt, <address ... bus="0"> refers to the virtio-scsi "channel".
The current virtio-scsi driver in qemu has a hard limit of 1 channel,
so you can only use bus="0" (or channel=0).

Open question: Will this limit ever be increased?

In libvirt, <address ... target="0"> refers to the virtio-scsi
"scsi-id" (internally in the driver called just ".id").  You can use
any target from 0 to 255 inclusive.

In libvirt, <address ... unit="0"> refers to the virtio-scsi "unit" ie
the SCSI LUN.  You can use any LUN from 0 to 16383 inclusive.

Open question: What does the bus=scsi0.0 parameter mean?

The maximum number of drives on a single controller is therefore
256 * 16384 = 4194304.

However there are other limits to consider:

 (1) qemu is limited by the number of files it can open (ulimit -n /
     RLIMIT_NOFILE).  On Fedora, this is 1024 (soft) or 4096 (hard),
     although of course it may be increased.

 (2) libvirt has trouble with > about 8000 drives
     (https://bugzilla.redhat.com/1443066).

 (3) The Linux kernel used to be limited to three letter drive names
     (ie. up to /dev/sdzzz, or 18278 drives), but in modern kernels
     this is no longer an issue.

 (4) The Linux kernel is quite slow at enumerating drives.  I couldn't
     get past 4000 drives without hitting SCSI layer timeouts.

Not tested yet: Does hotplugging work on individual LUNs?

----------------------------------------------------------------------

Currently libguestfs puts each disk on a separate target (target=i
unit=0), and therefore has an effective limit of 255 disks (256 - 1
because the appliance uses a disk).

When I changed libguestfs to use LUNs instead of targets (target=0
unit=i), I got a peculiar bug.  It looks like there is some kind of
race when enumerating the device, where /sys is populated before the
device is actually available.  See the below boot log, and compare it
to the init code:

https://github.com/libguestfs/supermin/blob/master/init/init.c#L176

* fp = fopen ("/sys/block/sdab/dev", "r") succeeds at line 181

* we read major:minor from fp at line 230

* we mknod ("/dev/root",...) at line 245

* we mount ("/dev/root", "/root", "ext2"...) at line 262, which fails with
  EINVAL

* shortly after that, kernel messages indicate that sdab has been
  attached.

Rich.

2017-04-18 14:30:28.019+0000: starting up libvirt version: 3.2.0, package: 
1.fc27 (Fedora Project, 2017-04-03-13:37:30, 
buildvm-26.phx2.fedoraproject.org), qemu version: 
2.8.93(qemu-2.9.0-0.2.rc3.fc27), hostname: trick.home.annexia.org
LC_ALL=C 
LD_LIBRARY_PATH=/home/rjones/d/libguestfs/ruby/ext/guestfs:/home/rjones/d/libguestfs/lib/.libs:/home/rjones/d/libguestfs/java/.libs:/home/rjones/d/libguestfs/gobject/.libs
 
PATH=/home/rjones/d/libguestfs/v2v:/home/rjones/d/libguestfs/tools:/home/rjones/d/libguestfs/test-tool:/home/rjones/d/libguestfs/sysprep:/home/rjones/d/libguestfs/sparsify:/home/rjones/d/libguestfs/resize:/home/rjones/d/libguestfs/rescue:/home/rjones/d/libguestfs/p2v:/home/rjones/d/libguestfs/make-fs:/home/rjones/d/libguestfs/inspector:/home/rjones/d/libguestfs/get-kernel:/home/rjones/d/libguestfs/fuse:/home/rjones/d/libguestfs/format:/home/rjones/d/libguestfs/fish:/home/rjones/d/libguestfs/erlang:/home/rjones/d/libguestfs/edit:/home/rjones/d/libguestfs/diff:/home/rjones/d/libguestfs/dib:/home/rjones/d/libguestfs/df:/home/rjones/d/libguestfs/customize:/home/rjones/d/libguestfs/cat:/home/rjones/d/libguestfs/builder:/home/rjones/d/libguestfs/align:/usr/libexec/python2-sphinx:/usr/local/bin:/usr/bin:/usr/local/sbin:/usr/sbin:/home/rjones/.local/bin:/home/rjones/bin
 HOME=/home/rjones USER=rjones LOGNAME=rjones QEMU_AUDIO_DRV=none 
TMPDIR=/home/rjones/d/libguestfs/tmp /usr/bin/qemu-kvm -name 
guest=guestfs-o53fc0or1muu2f30,debug-threads=on -S -object 
secret,id=masterKey0,format=raw,file=/home/rjones/.config/libvirt/qemu/lib/domain-1-guestfs-o53fc0or1muu/master-key.aes
 -machine pc-i440fx-2.9,accel=kvm,usb=off,dump-guest-core=off -cpu host -m 500 
-realtime mlock=off -smp 1,sockets=1,cores=1,threads=1 -uuid 
ca87a437-9562-4ca0-bd11-607342286ba1 -display none -no-user-config -nodefaults 
-device sga -chardev 
socket,id=charmonitor,path=/home/rjones/.config/libvirt/qemu/lib/domain-1-guestfs-o53fc0or1muu/monitor.sock,server,nowait
 -mon chardev=charmonitor,id=monitor,mode=control -rtc base=utc,driftfix=slew 
-global kvm-pit.lost_tick_policy=delay -no-hpet -no-reboot -no-acpi -boot 
strict=on -kernel 
/home/rjones/d/libguestfs/tmp/.guestfs-1000/appliance.d/kernel -initrd 
/home/rjones/d/libguestfs/tmp/.guestfs-1000/appliance.d/initrd -append 'panic=1 
console=ttyS0 edd=off udevtimeout=6000 udev.event-timeout=6000 no_timer_check 
printk.time=1 cgroup_disable=memory usbcore.nousb cryptomgr.notests 
tsc=reliable 8250.nr_uarts=1 root=/dev/sdab selinux=0 guestfs_verbose=1 
TERM=xterm-256color' -device virtio-scsi-pci,id=scsi0,bus=pci.0,addr=0x2 
-device virtio-serial-pci,id=virtio-serial0,bus=pci.0,addr=0x3 -drive 
file=/home/rjones/d/libguestfs/tmp/libguestfsRIVPfK/scratch.1,format=raw,if=none,id=drive-scsi0-0-0-0,cache=unsafe
 -device 
scsi-hd,bus=scsi0.0,channel=0,scsi-id=0,lun=0,drive=drive-scsi0-0-0-0,id=scsi0-0-0-0,bootindex=1
 -drive 
file=/home/rjones/d/libguestfs/tmp/libguestfsRIVPfK/scratch.2,format=raw,if=none,id=drive-scsi0-0-0-1,cache=unsafe
 -device 
scsi-hd,bus=scsi0.0,channel=0,scsi-id=0,lun=1,drive=drive-scsi0-0-0-1,id=scsi0-0-0-1
 -drive 
file=/home/rjones/d/libguestfs/tmp/libguestfsRIVPfK/scratch.3,format=raw,if=none,id=drive-scsi0-0-0-2,cache=unsafe
 -device 
scsi-hd,bus=scsi0.0,channel=0,scsi-id=0,lun=2,drive=drive-scsi0-0-0-2,id=scsi0-0-0-2
 -drive 
file=/home/rjones/d/libguestfs/tmp/libguestfsRIVPfK/scratch.4,format=raw,if=none,id=drive-scsi0-0-0-3,cache=unsafe
 -device 
scsi-hd,bus=scsi0.0,channel=0,scsi-id=0,lun=3,drive=drive-scsi0-0-0-3,id=scsi0-0-0-3
 -drive 
file=/home/rjones/d/libguestfs/tmp/libguestfsRIVPfK/scratch.5,format=raw,if=none,id=drive-scsi0-0-0-4,cache=unsafe
 -device 
scsi-hd,bus=scsi0.0,channel=0,scsi-id=0,lun=4,drive=drive-scsi0-0-0-4,id=scsi0-0-0-4
 -drive 
file=/home/rjones/d/libguestfs/tmp/libguestfsRIVPfK/scratch.6,format=raw,if=none,id=drive-scsi0-0-0-5,cache=unsafe
 -device 
scsi-hd,bus=scsi0.0,channel=0,scsi-id=0,lun=5,drive=drive-scsi0-0-0-5,id=scsi0-0-0-5
 -drive 
file=/home/rjones/d/libguestfs/tmp/libguestfsRIVPfK/scratch.7,format=raw,if=none,id=drive-scsi0-0-0-6,cache=unsafe
 -device 
scsi-hd,bus=scsi0.0,channel=0,scsi-id=0,lun=6,drive=drive-scsi0-0-0-6,id=scsi0-0-0-6
 -drive 
file=/home/rjones/d/libguestfs/tmp/libguestfsRIVPfK/scratch.8,format=raw,if=none,id=drive-scsi0-0-0-7,cache=unsafe
 -device 
scsi-hd,bus=scsi0.0,channel=0,scsi-id=0,lun=7,drive=drive-scsi0-0-0-7,id=scsi0-0-0-7
 -drive 
file=/home/rjones/d/libguestfs/tmp/libguestfsRIVPfK/scratch.9,format=raw,if=none,id=drive-scsi0-0-0-8,cache=unsafe
 -device 
scsi-hd,bus=scsi0.0,channel=0,scsi-id=0,lun=8,drive=drive-scsi0-0-0-8,id=scsi0-0-0-8
 -drive 
file=/home/rjones/d/libguestfs/tmp/libguestfsRIVPfK/scratch.10,format=raw,if=none,id=drive-scsi0-0-0-9,cache=unsafe
 -device 
scsi-hd,bus=scsi0.0,channel=0,scsi-id=0,lun=9,drive=drive-scsi0-0-0-9,id=scsi0-0-0-9
 -drive 
file=/home/rjones/d/libguestfs/tmp/libguestfsRIVPfK/scratch.11,format=raw,if=none,id=drive-scsi0-0-0-10,cache=unsafe
 -device 
scsi-hd,bus=scsi0.0,channel=0,scsi-id=0,lun=10,drive=drive-scsi0-0-0-10,id=scsi0-0-0-10
 -drive 
file=/home/rjones/d/libguestfs/tmp/libguestfsRIVPfK/scratch.12,format=raw,if=none,id=drive-scsi0-0-0-11,cache=unsafe
 -device 
scsi-hd,bus=scsi0.0,channel=0,scsi-id=0,lun=11,drive=drive-scsi0-0-0-11,id=scsi0-0-0-11
 -drive 
file=/home/rjones/d/libguestfs/tmp/libguestfsRIVPfK/scratch.13,format=raw,if=none,id=drive-scsi0-0-0-12,cache=unsafe
 -device 
scsi-hd,bus=scsi0.0,channel=0,scsi-id=0,lun=12,drive=drive-scsi0-0-0-12,id=scsi0-0-0-12
 -drive 
file=/home/rjones/d/libguestfs/tmp/libguestfsRIVPfK/scratch.14,format=raw,if=none,id=drive-scsi0-0-0-13,cache=unsafe
 -device 
scsi-hd,bus=scsi0.0,channel=0,scsi-id=0,lun=13,drive=drive-scsi0-0-0-13,id=scsi0-0-0-13
 -drive 
file=/home/rjones/d/libguestfs/tmp/libguestfsRIVPfK/scratch.15,format=raw,if=none,id=drive-scsi0-0-0-14,cache=unsafe
 -device 
scsi-hd,bus=scsi0.0,channel=0,scsi-id=0,lun=14,drive=drive-scsi0-0-0-14,id=scsi0-0-0-14
 -drive 
file=/home/rjones/d/libguestfs/tmp/libguestfsRIVPfK/scratch.16,format=raw,if=none,id=drive-scsi0-0-0-15,cache=unsafe
 -device 
scsi-hd,bus=scsi0.0,channel=0,scsi-id=0,lun=15,drive=drive-scsi0-0-0-15,id=scsi0-0-0-15
 -drive 
file=/home/rjones/d/libguestfs/tmp/libguestfsRIVPfK/scratch.17,format=raw,if=none,id=drive-scsi0-0-0-16,cache=unsafe
 -device 
scsi-hd,bus=scsi0.0,channel=0,scsi-id=0,lun=16,drive=drive-scsi0-0-0-16,id=scsi0-0-0-16
 -drive 
file=/home/rjones/d/libguestfs/tmp/libguestfsRIVPfK/scratch.18,format=raw,if=none,id=drive-scsi0-0-0-17,cache=unsafe
 -device 
scsi-hd,bus=scsi0.0,channel=0,scsi-id=0,lun=17,drive=drive-scsi0-0-0-17,id=scsi0-0-0-17
 -drive 
file=/home/rjones/d/libguestfs/tmp/libguestfsRIVPfK/scratch.19,format=raw,if=none,id=drive-scsi0-0-0-18,cache=unsafe
 -device 
scsi-hd,bus=scsi0.0,channel=0,scsi-id=0,lun=18,drive=drive-scsi0-0-0-18,id=scsi0-0-0-18
 -drive 
file=/home/rjones/d/libguestfs/tmp/libguestfsRIVPfK/scratch.20,format=raw,if=none,id=drive-scsi0-0-0-19,cache=unsafe
 -device 
scsi-hd,bus=scsi0.0,channel=0,scsi-id=0,lun=19,drive=drive-scsi0-0-0-19,id=scsi0-0-0-19
 -drive 
file=/home/rjones/d/libguestfs/tmp/libguestfsRIVPfK/scratch.21,format=raw,if=none,id=drive-scsi0-0-0-20,cache=unsafe
 -device 
scsi-hd,bus=scsi0.0,channel=0,scsi-id=0,lun=20,drive=drive-scsi0-0-0-20,id=scsi0-0-0-20
 -drive 
file=/home/rjones/d/libguestfs/tmp/libguestfsRIVPfK/scratch.22,format=raw,if=none,id=drive-scsi0-0-0-21,cache=unsafe
 -device 
scsi-hd,bus=scsi0.0,channel=0,scsi-id=0,lun=21,drive=drive-scsi0-0-0-21,id=scsi0-0-0-21
 -drive 
file=/home/rjones/d/libguestfs/tmp/libguestfsRIVPfK/scratch.23,format=raw,if=none,id=drive-scsi0-0-0-22,cache=unsafe
 -device 
scsi-hd,bus=scsi0.0,channel=0,scsi-id=0,lun=22,drive=drive-scsi0-0-0-22,id=scsi0-0-0-22
 -drive 
file=/home/rjones/d/libguestfs/tmp/libguestfsRIVPfK/scratch.24,format=raw,if=none,id=drive-scsi0-0-0-23,cache=unsafe
 -device 
scsi-hd,bus=scsi0.0,channel=0,scsi-id=0,lun=23,drive=drive-scsi0-0-0-23,id=scsi0-0-0-23
 -drive 
file=/home/rjones/d/libguestfs/tmp/libguestfsRIVPfK/scratch.25,format=raw,if=none,id=drive-scsi0-0-0-24,cache=unsafe
 -device 
scsi-hd,bus=scsi0.0,channel=0,scsi-id=0,lun=24,drive=drive-scsi0-0-0-24,id=scsi0-0-0-24
 -drive 
file=/home/rjones/d/libguestfs/tmp/libguestfsRIVPfK/scratch.26,format=raw,if=none,id=drive-scsi0-0-0-25,cache=unsafe
 -device 
scsi-hd,bus=scsi0.0,channel=0,scsi-id=0,lun=25,drive=drive-scsi0-0-0-25,id=scsi0-0-0-25
 -drive 
file=/home/rjones/d/libguestfs/tmp/libguestfsRIVPfK/scratch.27,format=raw,if=none,id=drive-scsi0-0-0-26,cache=unsafe
 -device 
scsi-hd,bus=scsi0.0,channel=0,scsi-id=0,lun=26,drive=drive-scsi0-0-0-26,id=scsi0-0-0-26
 -drive 
file=/home/rjones/d/libguestfs/tmp/libguestfsRIVPfK/overlay28,format=qcow2,if=none,id=drive-scsi0-0-0-27,cache=unsafe
 -device 
scsi-hd,bus=scsi0.0,channel=0,scsi-id=0,lun=27,drive=drive-scsi0-0-0-27,id=scsi0-0-0-27
 -chardev 
socket,id=charserial0,path=/run/user/1000/libguestfsE9o2dm/console.sock -device 
isa-serial,chardev=charserial0,id=serial0 -chardev 
socket,id=charchannel0,path=/run/user/1000/libguestfsE9o2dm/guestfsd.sock 
-device 
virtserialport,bus=virtio-serial0.0,nr=1,chardev=charchannel0,id=channel0,name=org.libguestfs.channel.0
 -object rng-random,id=objrng0,filename=/dev/urandom -device 
virtio-rng-pci,rng=objrng0,id=rng0,bus=pci.0,addr=0x4 -msg timestamp=on
2017-04-18 14:30:28.019+0000: Domain id=1 is tainted: custom-argv
2017-04-18 14:30:28.019+0000: Domain id=1 is tainted: host-cpu
2017-04-18 14:30:31.860+0000: shutting down, reason=shutdown


Google, Inc.
Serial Graphics Adapter 02/12/17
SGABIOS $Id: sgabios.S 8 2010-04-22 00:03:40Z nlaredo $ (mockbuild@) Sun Feb 12 
00:43:05 UTC 2017
Term: 80x24
4 0
\x1b[2J
SeaBIOS (version 1.10.2-1.fc26)


Machine UUID ca87a437-9562-4ca0-bd11-607342286ba1


Booting from ROM...

\x1b[2J[    0.000000] Linux version 4.11.0-0.rc4.git1.1.fc27.x86_64 
(mockbu...@bkernel02.phx2.fedoraproject.org) (gcc version 7.0.1 20170327 (Red 
Hat 7.0.1-0.13) (GCC) ) #1 SMP Tue Mar 28 15:20:45 UTC 2017
[    0.000000] Command line: panic=1 console=ttyS0 edd=off udevtimeout=6000 
udev.event-timeout=6000 no_timer_check printk.time=1 cgroup_disable=memory 
usbcore.nousb cryptomgr.notests tsc=reliable 8250.nr_uarts=1 root=/dev/sdab 
selinux=0 guestfs_verbose=1 TERM=xterm-256color
[    0.000000] x86/fpu: Supporting XSAVE feature 0x001: 'x87 floating point 
registers'
[    0.000000] x86/fpu: Supporting XSAVE feature 0x002: 'SSE registers'
[    0.000000] x86/fpu: Supporting XSAVE feature 0x004: 'AVX registers'
[    0.000000] x86/fpu: xstate_offset[2]:  576, xstate_sizes[2]:  256
[    0.000000] x86/fpu: Enabled xstate features 0x7, context size is 832 bytes, 
using 'standard' format.
[    0.000000] e820: BIOS-provided physical RAM map:
[    0.000000] BIOS-e820: [mem 0x0000000000000000-0x000000000009f7ff] usable
[    0.000000] BIOS-e820: [mem 0x000000000009f800-0x000000000009ffff] reserved
[    0.000000] BIOS-e820: [mem 0x00000000000f0000-0x00000000000fffff] reserved
[    0.000000] BIOS-e820: [mem 0x0000000000100000-0x000000001f3fdfff] usable
[    0.000000] BIOS-e820: [mem 0x000000001f3fe000-0x000000001f3fffff] reserved
[    0.000000] BIOS-e820: [mem 0x00000000feffc000-0x00000000feffffff] reserved
[    0.000000] BIOS-e820: [mem 0x00000000fffc0000-0x00000000ffffffff] reserved
[    0.000000] NX (Execute Disable) protection: active
[    0.000000] SMBIOS 2.8 present.
[    0.000000] DMI: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1.fc26 
04/01/2014
[    0.000000] Hypervisor detected: KVM
[    0.000000] e820: last_pfn = 0x1f3fe max_arch_pfn = 0x400000000
[    0.000000] x86/PAT: Configuration [0-7]: WB  WC  UC- UC  WB  WC  UC- WT  
[    0.000000] found SMP MP-table at [mem 0x000f6c10-0x000f6c1f] mapped at 
[ffffa059000f6c10]
[    0.000000] Scanning 1 areas for low memory corruption
[    0.000000] Using GB pages for direct mapping
[    0.000000] RAMDISK: [mem 0x1f366000-0x1f3effff]
[    0.000000] ACPI: Early table checksum verification disabled
[    0.000000] ACPI BIOS Error (bug): A valid RSDP was not found 
(20170119/tbxfroot-244)
[    0.000000] No NUMA configuration found
[    0.000000] Faking a node at [mem 0x0000000000000000-0x000000001f3fdfff]
[    0.000000] NODE_DATA(0) allocated [mem 0x1f33b000-0x1f365fff]
[    0.000000] kvm-clock: Using msrs 4b564d01 and 4b564d00
[    0.000000] kvm-clock: cpu 0, msr 0:1f2bb001, primary cpu clock
[    0.000000] kvm-clock: using sched offset of 371325493 cycles
[    0.000000] clocksource: kvm-clock: mask: 0xffffffffffffffff max_cycles: 
0x1cd42e4dffb, max_idle_ns: 881590591483 ns
[    0.000000] Zone ranges:
[    0.000000]   DMA      [mem 0x0000000000001000-0x0000000000ffffff]
[    0.000000]   DMA32    [mem 0x0000000001000000-0x000000001f3fdfff]
[    0.000000]   Normal   empty
[    0.000000]   Device   empty
[    0.000000] Movable zone start for each node
[    0.000000] Early memory node ranges
[    0.000000]   node   0: [mem 0x0000000000001000-0x000000000009efff]
[    0.000000]   node   0: [mem 0x0000000000100000-0x000000001f3fdfff]
[    0.000000] Initmem setup node 0 [mem 0x0000000000001000-0x000000001f3fdfff]
[    0.000000] SFI: Simple Firmware Interface v0.81 http://simplefirmware.org
[    0.000000] Intel MultiProcessor Specification v1.4
[    0.000000] MPTABLE: OEM ID: BOCHSCPU
[    0.000000] MPTABLE: Product ID: 0.1         
[    0.000000] MPTABLE: APIC at: 0xFEE00000
[    0.000000] Processor #0 (Bootup-CPU)
[    0.000000] IOAPIC[0]: apic_id 0, version 17, address 0xfec00000, GSI 0-23
[    0.000000] Processors: 1
[    0.000000] smpboot: Allowing 1 CPUs, 0 hotplug CPUs
[    0.000000] PM: Registered nosave memory: [mem 0x00000000-0x00000fff]
[    0.000000] PM: Registered nosave memory: [mem 0x0009f000-0x0009ffff]
[    0.000000] PM: Registered nosave memory: [mem 0x000a0000-0x000effff]
[    0.000000] PM: Registered nosave memory: [mem 0x000f0000-0x000fffff]
[    0.000000] e820: [mem 0x1f400000-0xfeffbfff] available for PCI devices
[    0.000000] Booting paravirtualized kernel on KVM
[    0.000000] clocksource: refined-jiffies: mask: 0xffffffff max_cycles: 
0xffffffff, max_idle_ns: 1910969940391419 ns
[    0.000000] setup_percpu: NR_CPUS:8192 nr_cpumask_bits:1 nr_cpu_ids:1 
nr_node_ids:1
[    0.000000] percpu: Embedded 485 pages/cpu @ffffa0591f000000 s1948504 r8192 
d29864 u2097152
[    0.000000] KVM setup async PF for cpu 0
[    0.000000] kvm-stealtime: cpu 0, msr 1f00db40
[    0.000000] Built 1 zonelists in Node order, mobility grouping on.  Total 
pages: 125879
[    0.000000] Policy zone: DMA32
[    0.000000] Kernel command line: panic=1 console=ttyS0 edd=off 
udevtimeout=6000 udev.event-timeout=6000 no_timer_check printk.time=1 
cgroup_disable=memory usbcore.nousb cryptomgr.notests tsc=reliable 
8250.nr_uarts=1 root=/dev/sdab selinux=0 guestfs_verbose=1 TERM=xterm-256color
[    0.000000] PID hash table entries: 2048 (order: 2, 16384 bytes)
[    0.000000] Memory: 461856K/511600K available (9745K kernel code, 2014K 
rwdata, 3808K rodata, 4652K init, 17160K bss, 49744K reserved, 0K cma-reserved)
[    0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
[    0.001000] Running RCU self tests
[    0.001000] Hierarchical RCU implementation.
[    0.001000] \tRCU lockdep checking is enabled.
[    0.001000] \tBuild-time adjustment of leaf fanout to 64.
[    0.001000] \tRCU restricting CPUs from NR_CPUS=8192 to nr_cpu_ids=1.
[    0.001000] RCU: Adjusting geometry for rcu_fanout_leaf=64, nr_cpu_ids=1
[    0.001000] NR_IRQS:524544 nr_irqs:256 16
[    0.001000] \tOffload RCU callbacks from all CPUs
[    0.001000] \tOffload RCU callbacks from CPUs: 0.
[    0.001000] Console: colour *CGA 80x25
[    0.001000] console [ttyS0] enabled
[    0.001000] Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., 
Ingo Molnar
[    0.001000] ... MAX_LOCKDEP_SUBCLASSES:  8
[    0.001000] ... MAX_LOCK_DEPTH:          48
[    0.001000] ... MAX_LOCKDEP_KEYS:        8191
[    0.001000] ... CLASSHASH_SIZE:          4096
[    0.001000] ... MAX_LOCKDEP_ENTRIES:     32768
[    0.001000] ... MAX_LOCKDEP_CHAINS:      65536
[    0.001000] ... CHAINHASH_SIZE:          32768
[    0.001000]  memory used by lock dependency info: 8671 kB
[    0.001000]  per task-struct memory footprint: 2688 bytes
[    0.001000] kmemleak: Kernel memory leak detector disabled
[    0.001018] tsc: Detected 1699.998 MHz processor
[    0.003027] Calibrating delay loop (skipped) preset value.. 3399.99 BogoMIPS 
(lpj=1699998)
[    0.004011] pid_max: default: 32768 minimum: 301
[    0.006165] Security Framework initialized
[    0.008011] Yama: becoming mindful.
[    0.009025] SELinux:  Disabled at boot.
[    0.011214] Dentry cache hash table entries: 65536 (order: 7, 524288 bytes)
[    0.013193] Inode-cache hash table entries: 32768 (order: 6, 262144 bytes)
[    0.015082] Mount-cache hash table entries: 1024 (order: 1, 8192 bytes)
[    0.016015] Mountpoint-cache hash table entries: 1024 (order: 1, 8192 bytes)
[    0.019517] Disabling memory control group subsystem
[    0.021128] CPU: Physical Processor ID: 0
[    0.023017] mce: CPU supports 10 MCE banks
[    0.025120] Last level iTLB entries: 4KB 0, 2MB 0, 4MB 0
[    0.026010] Last level dTLB entries: 4KB 0, 2MB 0, 4MB 0, 1GB 0
[    0.040016] Freeing SMP alternatives memory: 32K
[    0.042863] ftrace: allocating 32197 entries in 126 pages
[    0.055311] smpboot: Max logical packages: 1
[    0.057531] x2apic enabled
[    0.058011] Switched APIC routing to physical x2apic.
[    0.062806] ..TIMER: vector=0x30 apic1=0 pin1=2 apic2=-1 pin2=-1
[    0.063000] smpboot: CPU0: Intel(R) Xeon(R) CPU E5-2609 v4 @ 1.70GHz 
(family: 0x6, model: 0x4f, stepping: 0x1)
[    0.063254] Performance Events: Broadwell events, Intel PMU driver.
[    0.064021] ... version:                2
[    0.065010] ... bit width:              48
[    0.066009] ... generic registers:      8
[    0.067021] ... value mask:             0000ffffffffffff
[    0.068010] ... max period:             000000007fffffff
[    0.069010] ... fixed-purpose events:   3
[    0.070010] ... event mask:             00000007000000ff
[    0.072669] smp: Bringing up secondary CPUs ...
[    0.073038] smp: Brought up 1 node, 1 CPU
[    0.074011] smpboot: Total of 1 processors activated (3399.99 BogoMIPS)
[    0.075808] sched_clock: Marking stable (75000000, 0)->(396801627, 
-321801627)
[    0.079129] devtmpfs: initialized
[    0.080701] x86/mm: Memory block size: 128MB
[    0.085293] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, 
max_idle_ns: 1911260446275000 ns
[    0.089064] futex hash table entries: 256 (order: 3, 32768 bytes)
[    0.091677] pinctrl core: initialized pinctrl subsystem
[    0.094067] RTC time: 14:30:28, date: 04/18/17
[    0.096314] NET: Registered protocol family 16
[    0.098807] cpuidle: using governor menu
[    0.100932] PCI: Using configuration type 1 for base access
[    0.110790] HugeTLB registered 1 GB page size, pre-allocated 0 pages
[    0.113333] HugeTLB registered 2 MB page size, pre-allocated 0 pages
[    0.116674] ACPI: Interpreter disabled.
[    0.118503] vgaarb: loaded
[    0.119907] SCSI subsystem initialized
[    0.121620] usbcore: USB support disabled
[    0.124193] PCI: Probing PCI hardware
[    0.125796] PCI host bridge to bus 0000:00
[    0.127419] pci_bus 0000:00: root bus resource [io  0x0000-0xffff]
[    0.129884] pci_bus 0000:00: root bus resource [mem 0x00000000-0xffffffffff]
[    0.132671] pci_bus 0000:00: No busn resource found for root bus, will use 
[bus 00-ff]
[    0.145046] pci 0000:00:01.1: legacy IDE quirk: reg 0x10: [io  0x01f0-0x01f7]
[    0.147908] pci 0000:00:01.1: legacy IDE quirk: reg 0x14: [io  0x03f6]
[    0.151764] pci 0000:00:01.1: legacy IDE quirk: reg 0x18: [io  0x0170-0x0177]
[    0.154494] pci 0000:00:01.1: legacy IDE quirk: reg 0x1c: [io  0x0376]
[    0.206482] pci 0000:00:01.0: PIIX/ICH IRQ router [8086:7000]
[    0.211141] NetLabel: Initializing
[    0.212580] NetLabel:  domain hash size = 128
[    0.214330] NetLabel:  protocols = UNLABELED CIPSOv4 CALIPSO
[    0.216836] NetLabel:  unlabeled traffic allowed by default
[    0.219328] clocksource: Switched to clocksource kvm-clock
[    0.288806] VFS: Disk quotas dquot_6.6.0
[    0.290516] VFS: Dquot-cache hash table entries: 512 (order 0, 4096 bytes)
[    0.293531] pnp: PnP ACPI: disabled
[    0.301297] NET: Registered protocol family 2
[    0.303701] TCP established hash table entries: 4096 (order: 3, 32768 bytes)
[    0.306910] TCP bind hash table entries: 4096 (order: 6, 327680 bytes)
[    0.309906] TCP: Hash tables configured (established 4096 bind 4096)
[    0.312599] UDP hash table entries: 256 (order: 3, 49152 bytes)
[    0.315142] UDP-Lite hash table entries: 256 (order: 3, 49152 bytes)
[    0.318143] NET: Registered protocol family 1
[    0.319891] pci 0000:00:00.0: Limiting direct PCI/PCI transfers
[    0.322254] pci 0000:00:01.0: PIIX3: Enabling Passive Release
[    0.324597] pci 0000:00:01.0: Activating ISA DMA hang workarounds
[    0.327530] Unpacking initramfs...
[    0.332133] Freeing initrd memory: 552K
[    0.361347] DMA-API: preallocated 65536 debug entries
[    0.365537] DMA-API: debugging enabled by kernel config
[    0.367840] platform rtc_cmos: registered platform RTC device (no PNP device 
found)
[    0.371369] Scanning for low memory corruption every 60 seconds
[    0.374041] alg: self-tests disabled
[    0.376207] audit: initializing netlink subsys (disabled)
[    0.378523] cryptomgr_test (31) used greatest stack depth: 14640 bytes left
[    0.382109] Initialise system trusted keyrings
[    0.384258] workingset: timestamp_bits=36 max_order=17 bucket_order=0
[    0.393146] zbud: loaded
[    0.400637] NET: Registered protocol family 38
[    0.402612] Key type asymmetric registered
[    0.404396] Asymmetric key parser 'x509' registered
[    0.406442] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 
249)
[    0.409491] io scheduler noop registered
[    0.411402] io scheduler deadline registered
[    0.413212] io scheduler cfq registered (default)
[    0.415091] io scheduler mq-deadline registered
[    0.419179] atomic64_test: passed for x86-64 platform with CX8 and with SSE
[    0.423584] Serial: 8250/16550 driver, 1 ports, IRQ sharing enabled
[    0.456161] serial8250: ttyS0 at I/O 0x3f8 (irq = 4, base_baud = 115200) is 
a 16550A
[    0.460297] Non-volatile memory driver v1.3
[    0.462130] Linux agpgart interface v0.103
[    0.467678] scsi host0: ata_piix
[    0.469434] scsi host1: ata_piix
[    0.470911] ata1: PATA max MWDMA2 cmd 0x1f0 ctl 0x3f6 bmdma 0xc0a0 irq 14
[    0.473629] ata2: PATA max MWDMA2 cmd 0x170 ctl 0x376 bmdma 0xc0a8 irq 15
[    0.476591] libphy: Fixed MDIO Bus: probed
[    0.478471] usbserial: usb_serial_init - usb_register failed
[    0.480806] usbserial: usb_serial_init - returning with error -19
[    0.484518] i8042: PNP: No PS/2 controller found.
[    0.486389] i8042: Probing ports directly.
[    0.489922] serio: i8042 KBD port at 0x60,0x64 irq 1
[    0.491958] serio: i8042 AUX port at 0x60,0x64 irq 12
[    0.494442] mousedev: PS/2 mouse device common for all mice
[    0.497646] input: AT Translated Set 2 keyboard as 
/devices/platform/i8042/serio0/input/input0
[    0.501898] rtc_cmos rtc_cmos: rtc core: registered rtc_cmos as rtc0
[    0.502142] rtc_cmos rtc_cmos: alarms up to one day, 114 bytes nvram
[    0.502369] device-mapper: uevent: version 1.0.3
[    0.507619] device-mapper: ioctl: 4.35.0-ioctl (2016-06-23) initialised: 
dm-de...@redhat.com
[    0.508012] hidraw: raw HID events driver (C) Jiri Kosina
[    0.508244] drop_monitor: Initializing network drop monitor service
[    0.508480] ip_tables: (C) 2000-2006 Netfilter Core Team
[    0.508555] Initializing XFRM netlink socket
[    0.509052] NET: Registered protocol family 10
[    0.515512] kworker/u2:2 (84) used greatest stack depth: 13984 bytes left
[    0.526228] Segment Routing with IPv6
[    0.526280] mip6: Mobile IPv6
[    0.526299] NET: Registered protocol family 17
[    0.526758] AVX2 version of gcm_enc/dec engaged.
[    0.526760] AES CTR mode by8 optimization enabled
[    0.543050] input: VirtualPS/2 VMware VMMouse as 
/devices/platform/i8042/serio1/input/input3
[    0.547081] registered taskstats version 1
[    0.547110] Loading compiled-in X.509 certificates
[    0.552180] input: VirtualPS/2 VMware VMMouse as 
/devices/platform/i8042/serio1/input/input2
[    0.556764] Loaded X.509 cert 'Fedora kernel signing key: 
036bba79a715c1478c894d1c952934f04ad530a5'
[    0.556932] zswap: loaded using pool lzo/zbud
[    0.577721] Key type big_key registered
[    0.579809] Key type encrypted registered
[    0.583175]   Magic number: 13:302:536
[    0.584997] rtc_cmos rtc_cmos: setting system clock to 2017-04-18 14:30:29 
UTC (1492525829)
[    0.641961] Freeing unused kernel memory: 4652K
[    0.643872] Write protecting the kernel read-only data: 14336k
[    0.647151] Freeing unused kernel memory: 480K
[    0.649973] Freeing unused kernel memory: 288K
[    0.654106] x86/mm: Checked W+X mappings: passed, no W+X pages found.
[    0.656601] rodata_test: all tests were successful
supermin: mounting /proc
supermin: ext2 mini initrd starting up: 5.1.17 dietlibc
supermin: cmdline: panic=1 console=ttyS0 edd=off udevtimeout=6000 
udev.event-timeout=6000 no_timer_check printk.time=1 cgroup_disable=memory 
usbcore.nousb cryptomgr.notests tsc=reliable 8250.nr_uarts=1 root=/dev/sdab 
selinux=0 guestfs_verbose=1 TERM=xterm-256color
supermin: uptime: 0.60 0.08
supermin: mounting /sys
supermin: internal insmod crc32-pclmul.ko
supermin: internal insmod crc32c-intel.ko
supermin: internal insmod crct10dif-pclmul.ko
supermin: internal insmod crc32_generic.ko
supermin: internal insmod nfit.ko
insmod: init_module: nfit.ko: No such device
supermin: internal insmod virtio.ko
supermin: internal insmod virtio_ring.ko
supermin: internal insmod virtio_blk.ko
supermin: internal insmod virtio-rng.ko
supermin: internal insmod virtio_console.ko
supermin: internal insmod crypto_engine.ko
supermin: internal insmod virtio_crypto.ko[    0.716226] random: fast init done

supermin: internal insmod virtio_net.ko
supermin: internal insmod nd_btt.ko
supermin: internal insmod nd_pmem.ko
supermin: internal insmod virtio_scsi.ko
supermin: internal insmod virtio_balloon.ko
supermin: internal insmod virtio_input.ko
supermin: internal insmod virtio_mmio.ko
supermin: internal insmod virtio_pci.ko
[    0.750232] virtio-pci 0000:00:02.0: PCI->APIC IRQ transform: INT A -> IRQ 10
[    0.757888] scsi host2: Virtio SCSI HBA
[    0.760908] virtio-pci 0000:00:03.0: PCI->APIC IRQ transform: INT A -> IRQ 11
[    0.765966] scsi 2:0:0:0: Direct-Access     QEMU     QEMU HARDDISK    2.5+ 
PQ: 0 ANSI: 5
[    0.777079] scsi 2:0:0:27: Direct-Access     QEMU     QEMU HARDDISK    2.5+ 
PQ: 0 ANSI: 5
[    0.797056] scsi 2:0:0:26: Direct-Access     QEMU     QEMU HARDDISK    2.5+ 
PQ: 0 ANSI: 5
[    0.801051] virtio-pci 0000:00:04.0: PCI->APIC IRQ transform: INT A -> IRQ 11
[    0.808212] scsi 2:0:0:25: Direct-Access     QEMU     QEMU HARDDISK    2.5+ 
PQ: 0 ANSI: 5
[    0.811926] random: crng init done
[    0.814597] scsi 2:0:0:24: Direct-Access     QEMU     QEMU HARDDISK    2.5+ 
PQ: 0 ANSI: 5
[    0.819568] scsi 2:0:0:23: Direct-Access     QEMU     QEMU HARDDISK    2.5+ 
PQ: 0 ANSI: 5
[    0.823898] scsi 2:0:0:22: Direct-Access     QEMU     QEMU HARDDISK    2.5+ 
PQ: 0 ANSI: 5
[    0.828180] scsi 2:0:0:21: Direct-Access     QEMU     QEMU HARDDISK    2.5+ 
PQ: 0 ANSI: 5
[    0.832427] scsi 2:0:0:20: Direct-Access     QEMU     QEMU HARDDISK    2.5+ 
PQ: 0 ANSI: 5
[    0.836679] scsi 2:0:0:19: Direct-Access     QEMU     QEMU HARDDISK    2.5+ 
PQ: 0 ANSI: 5
[    0.840946] scsi 2:0:0:18: Direct-Access     QEMU     QEMU HARDDISK    2.5+ 
PQ: 0 ANSI: 5
[    0.845154] scsi 2:0:0:17: Direct-Access     QEMU     QEMU HARDDISK    2.5+ 
PQ: 0 ANSI: 5
[    0.849404] scsi 2:0:0:16: Direct-Access     QEMU     QEMU HARDDISK    2.5+ 
PQ: 0 ANSI: 5
[    0.853644] scsi 2:0:0:15: Direct-Access     QEMU     QEMU HARDDISK    2.5+ 
PQ: 0 ANSI: 5
[    0.857927] scsi 2:0:0:14: Direct-Access     QEMU     QEMU HARDDISK    2.5+ 
PQ: 0 ANSI: 5
[    0.862196] scsi 2:0:0:13: Direct-Access     QEMU     QEMU HARDDISK    2.5+ 
PQ: 0 ANSI: 5
[    0.866432] scsi 2:0:0:12: Direct-Access     QEMU     QEMU HARDDISK    2.5+ 
PQ: 0 ANSI: 5
[    0.870682] scsi 2:0:0:11: Direct-Access     QEMU     QEMU HARDDISK    2.5+ 
PQ: 0 ANSI: 5
[    0.874952] scsi 2:0:0:10: Direct-Access     QEMU     QEMU HARDDISK    2.5+ 
PQ: 0 ANSI: 5
[    0.879142] scsi 2:0:0:9: Direct-Access     QEMU     QEMU HARDDISK    2.5+ 
PQ: 0 ANSI: 5
[    0.883343] scsi 2:0:0:8: Direct-Access     QEMU     QEMU HARDDISK    2.5+ 
PQ: 0 ANSI: 5
[    0.887531] scsi 2:0:0:7: Direct-Access     QEMU     QEMU HARDDISK    2.5+ 
PQ: 0 ANSI: 5
[    0.891778] scsi 2:0:0:6: Direct-Access     QEMU     QEMU HARDDISK    2.5+ 
PQ: 0 ANSI: 5
[    0.895953] scsi 2:0:0:5: Direct-Access     QEMU     QEMU HARDDISK    2.5+ 
PQ: 0 ANSI: 5
[    0.900142] scsi 2:0:0:4: Direct-Access     QEMU     QEMU HARDDISK    2.5+ 
PQ: 0 ANSI: 5
[    0.904411] scsi 2:0:0:3: Direct-Access     QEMU     QEMU HARDDISK    2.5+ 
PQ: 0 ANSI: 5
[    0.908635] scsi 2:0:0:2: Direct-Access     QEMU     QEMU HARDDISK    2.5+ 
PQ: 0 ANSI: 5
[    0.912806] scsi 2:0:0:1: Direct-Access     QEMU     QEMU HARDDISK    2.5+ 
PQ: 0 ANSI: 5
[    1.124757] sd 2:0:0:0: Attached scsi generic sg0 type 0
[    1.127512] sd 2:0:0:0: [sda] 2048 512-byte logical blocks: (1.05 MB/1.00 
MiB)
[    1.130779] sd 2:0:0:0: [sda] Write Protect is off
[    1.133100] sd 2:0:0:27: Attached scsi generic sg1 type 0
[    1.135704] sd 2:0:0:0: [sda] Write cache: enabled, read cache: enabled, 
doesn't support DPO or FUA
[    1.139705] sd 2:0:0:27: [sdb] 8388608 512-byte logical blocks: (4.29 
GB/4.00 GiB)
[    1.142948] sd 2:0:0:27: [sdb] Write Protect is off
[    1.144929] sd 2:0:0:26: Attached scsi generic sg2 type 0
[    1.147482] sd 2:0:0:27: [sdb] Write cache: enabled, read cache: enabled, 
doesn't support DPO or FUA
[    1.151944] sd 2:0:0:26: [sdc] 2048 512-byte logical blocks: (1.05 MB/1.00 
MiB)
[    1.155113] sd 2:0:0:26: [sdc] Write Protect is off
[    1.157290] sd 2:0:0:25: Attached scsi generic sg3 type 0
[    1.160070] sd 2:0:0:26: [sdc] Write cache: enabled, read cache: enabled, 
doesn't support DPO or FUA
[    1.164503] sd 2:0:0:25: [sdd] 2048 512-byte logical blocks: (1.05 MB/1.00 
MiB)
[    1.167645] sd 2:0:0:25: [sdd] Write Protect is off
[    1.169807] sd 2:0:0:24: Attached scsi generic sg4 type 0
[    1.173149] sd 2:0:0:25: [sdd] Write cache: enabled, read cache: enabled, 
doesn't support DPO or FUA
[    1.177990] sd 2:0:0:24: [sde] 2048 512-byte logical blocks: (1.05 MB/1.00 
MiB)
[    1.181191] sd 2:0:0:24: [sde] Write Protect is off
[    1.184067] sd 2:0:0:0: [sda] Attached SCSI disk
[    1.186874] sd 2:0:0:23: Attached scsi generic sg5 type 0
[    1.189651] sd 2:0:0:24: [sde] Write cache: enabled, read cache: enabled, 
doesn't support DPO or FUA
[    1.193690] sd 2:0:0:23: [sdf] 2048 512-byte logical blocks: (1.05 MB/1.00 
MiB)
[    1.196837] sd 2:0:0:23: [sdf] Write Protect is off
[    1.199386] sd 2:0:0:27: [sdb] Attached SCSI disk
[    1.202784] sd 2:0:0:22: [sdg] 2048 512-byte logical blocks: (1.05 MB/1.00 
MiB)
[    1.205824] sd 2:0:0:22: Attached scsi generic sg6 type 0
[    1.208463] sd 2:0:0:22: [sdg] Write Protect is off
[    1.210808] sd 2:0:0:23: [sdf] Write cache: enabled, read cache: enabled, 
doesn't support DPO or FUA
[    1.214644] sd 2:0:0:26: [sdc] Attached SCSI disk
[    1.218080] sd 2:0:0:22: [sdg] Write cache: enabled, read cache: enabled, 
doesn't support DPO or FUA
[    1.221902] sd 2:0:0:21: Attached scsi generic sg7 type 0
[    1.224778] sd 2:0:0:21: [sdh] 2048 512-byte logical blocks: (1.05 MB/1.00 
MiB)
[    1.228138] sd 2:0:0:21: [sdh] Write Protect is off
[    1.230348] sd 2:0:0:25: [sdd] Attached SCSI disk
[    1.233903] sd 2:0:0:20: Attached scsi generic sg8 type 0
[    1.236246] sd 2:0:0:20: [sdi] 2048 512-byte logical blocks: (1.05 MB/1.00 
MiB)
[    1.239513] sd 2:0:0:20: [sdi] Write Protect is off
[    1.241794] sd 2:0:0:24: [sde] Attached SCSI disk
[    1.244088] sd 2:0:0:21: [sdh] Write cache: enabled, read cache: enabled, 
doesn't support DPO or FUA
[    1.249007] sd 2:0:0:20: [sdi] Write cache: enabled, read cache: enabled, 
doesn't support DPO or FUA
[    1.253181] sd 2:0:0:19: Attached scsi generic sg9 type 0
[    1.255730] sd 2:0:0:19: [sdj] 2048 512-byte logical blocks: (1.05 MB/1.00 
MiB)
[    1.259110] sd 2:0:0:19: [sdj] Write Protect is off
[    1.261235] sd 2:0:0:23: [sdf] Attached SCSI disk
[    1.265214] sd 2:0:0:22: [sdg] Attached SCSI disk
[    1.267227] sd 2:0:0:18: Attached scsi generic sg10 type 0
[    1.269935] sd 2:0:0:18: [sdk] 2048 512-byte logical blocks: (1.05 MB/1.00 
MiB)
[    1.273341] sd 2:0:0:19: [sdj] Write cache: enabled, read cache: enabled, 
doesn't support DPO or FUA
[    1.277362] sd 2:0:0:18: [sdk] Write Protect is off
[    1.280756] sd 2:0:0:17: Attached scsi generic sg11 type 0
[    1.283513] sd 2:0:0:17: [sdl] 2048 512-byte logical blocks: (1.05 MB/1.00 
MiB)
[    1.286731] sd 2:0:0:18: [sdk] Write cache: enabled, read cache: enabled, 
doesn't support DPO or FUA
[    1.290468] sd 2:0:0:21: [sdh] Attached SCSI disk
[    1.292833] sd 2:0:0:17: [sdl] Write Protect is off
[    1.296174] sd 2:0:0:20: [sdi] Attached SCSI disk
[    1.298389] sd 2:0:0:16: Attached scsi generic sg12 type 0
[    1.301208] sd 2:0:0:16: [sdm] 2048 512-byte logical blocks: (1.05 MB/1.00 
MiB)
[    1.304585] sd 2:0:0:17: [sdl] Write cache: enabled, read cache: enabled, 
doesn't support DPO or FUA
[    1.308906] sd 2:0:0:16: [sdm] Write Protect is off
[    1.311919] sd 2:0:0:19: [sdj] Attached SCSI disk
[    1.313897] sd 2:0:0:15: Attached scsi generic sg13 type 0
[    1.316698] sd 2:0:0:16: [sdm] Write cache: enabled, read cache: enabled, 
doesn't support DPO or FUA
[    1.320370] sd 2:0:0:15: [sdn] 2048 512-byte logical blocks: (1.05 MB/1.00 
MiB)
[    1.324055] sd 2:0:0:15: [sdn] Write Protect is off
[    1.327433] sd 2:0:0:14: Attached scsi generic sg14 type 0
[    1.330038] sd 2:0:0:18: [sdk] Attached SCSI disk
[    1.332066] sd 2:0:0:14: [sdo] 2048 512-byte logical blocks: (1.05 MB/1.00 
MiB)
[    1.335256] sd 2:0:0:15: [sdn] Write cache: enabled, read cache: enabled, 
doesn't support DPO or FUA
[    1.339196] sd 2:0:0:14: [sdo] Write Protect is off
[    1.342776] sd 2:0:0:13: Attached scsi generic sg15 type 0
[    1.345573] sd 2:0:0:13: [sdp] 2048 512-byte logical blocks: (1.05 MB/1.00 
MiB)
[    1.348562] sd 2:0:0:17: [sdl] Attached SCSI disk
[    1.350497] sd 2:0:0:14: [sdo] Write cache: enabled, read cache: enabled, 
doesn't support DPO or FUA
[    1.355531] sd 2:0:0:13: [sdp] Write Protect is off
[    1.358208] sd 2:0:0:12: Attached scsi generic sg16 type 0
[    1.360815] sd 2:0:0:12: [sdq] 2048 512-byte logical blocks: (1.05 MB/1.00 
MiB)
[    1.364075] sd 2:0:0:13: [sdp] Write cache: enabled, read cache: enabled, 
doesn't support DPO or FUA
[    1.367740] sd 2:0:0:16: [sdm] Attached SCSI disk
[    1.369849] sd 2:0:0:12: [sdq] Write Protect is off
[    1.373438] clocksource: tsc: mask: 0xffffffffffffffff max_cycles: 
0x188125786ea, max_idle_ns: 440795276273 ns
[    1.377623] sd 2:0:0:11: Attached scsi generic sg17 type 0
[    1.377859] sd 2:0:0:11: [sdr] 2048 512-byte logical blocks: (1.05 MB/1.00 
MiB)
[    1.378005] sd 2:0:0:11: [sdr] Write Protect is off
[    1.378256] sd 2:0:0:11: [sdr] Write cache: enabled, read cache: enabled, 
doesn't support DPO or FUA
[    1.378639] sd 2:0:0:15: [sdn] Attached SCSI disk
[    1.380664] sd 2:0:0:10: Attached scsi generic sg18 type 0
[    1.380967] sd 2:0:0:10: [sds] 2048 512-byte logical blocks: (1.05 MB/1.00 
MiB)
[    1.381119] sd 2:0:0:10: [sds] Write Protect is off
[    1.381389] sd 2:0:0:10: [sds] Write cache: enabled, read cache: enabled, 
doesn't support DPO or FUA
[    1.384464] sd 2:0:0:14: [sdo] Attached SCSI disk
[    1.385634] sd 2:0:0:12: [sdq] Write cache: enabled, read cache: enabled, 
doesn't support DPO or FUA
[    1.385663] sd 2:0:0:9: Attached scsi generic sg19 type 0
[    1.385741] sd 2:0:0:11: [sdr] Attached SCSI disk
[    1.386069] sd 2:0:0:9: [sdt] 2048 512-byte logical blocks: (1.05 MB/1.00 
MiB)
[    1.386226] sd 2:0:0:9: [sdt] Write Protect is off
[    1.386822] sd 2:0:0:9: [sdt] Write cache: enabled, read cache: enabled, 
doesn't support DPO or FUA
[    1.388375] sd 2:0:0:10: [sds] Attached SCSI disk
[    1.389302] sd 2:0:0:8: Attached scsi generic sg20 type 0
[    1.389413] sd 2:0:0:8: [sdu] 2048 512-byte logical blocks: (1.05 MB/1.00 
MiB)
[    1.389539] sd 2:0:0:8: [sdu] Write Protect is off
[    1.389837] sd 2:0:0:8: [sdu] Write cache: enabled, read cache: enabled, 
doesn't support DPO or FUA
[    1.391885] sd 2:0:0:9: [sdt] Attached SCSI disk
[    1.393465] sd 2:0:0:12: [sdq] Attached SCSI disk
[    1.393497] sd 2:0:0:7: Attached scsi generic sg21 type 0
[    1.397123] sd 2:0:0:7: [sdv] 2048 512-byte logical blocks: (1.05 MB/1.00 
MiB)
[    1.397365] sd 2:0:0:7: [sdv] Write Protect is off
[    1.397609] sd 2:0:0:8: [sdu] Attached SCSI disk
[    1.397631] sd 2:0:0:7: [sdv] Write cache: enabled, read cache: enabled, 
doesn't support DPO or FUA
[    1.399306] sd 2:0:0:6: Attached scsi generic sg22 type 0
[    1.399555] sd 2:0:0:6: [sdw] 2048 512-byte logical blocks: (1.05 MB/1.00 
MiB)
[    1.399688] sd 2:0:0:6: [sdw] Write Protect is off
[    1.399938] sd 2:0:0:6: [sdw] Write cache: enabled, read cache: enabled, 
doesn't support DPO or FUA
[    1.400566] sd 2:0:0:13: [sdp] Attached SCSI disk
supermin: internal insmod crc-itu-t.ko
[    1.402077] sd 2:0:0:5: Attached scsi generic sg23 type 0
[    1.403090] sd 2:0:0:7: [sdv] Attached SCSI disk
supermin: internal insmod crc7.ko
supermin: internal insmod crc8.ko
supermin: internal insmod libcrc32c.ko
supermin: picked /sys/block/sdab/dev as root device
supermin: creating /dev/root as block special 65:176
supermin: mounting new root on /root
[    1.403116] sd 2:0:0:5: [sdx] 2048 512-byte logical blocks: (1.05 MB/1.00 
MiB)
mount: /root: Invalid argument
[    1.403224] sd 2:0:0:5: [sdx] Write Protect is off
[    1.403226] sd 2:0:0:5: [sdx] Mode Sense: 63 00 00 08
[    1.403517] sd 2:0:0:5: [sdx] Write cache: enabled, read cache: enabled, 
doesn't support DPO or FUA
[    1.404406] sd 2:0:0:6: [sdw] Attached SCSI disk
[    1.404703] sd 2:0:0:4: [sdy] 2048 512-byte logical blocks: (1.05 MB/1.00 
MiB)
[    1.404761] sd 2:0:0:4: Attached scsi generic sg24 type 0
[    1.404831] sd 2:0:0:4: [sdy] Write Protect is off
[    1.404833] sd 2:0:0:4: [sdy] Mode Sense: 63 00 00 08
[    1.405097] sd 2:0:0:4: [sdy] Write cache: enabled, read cache: enabled, 
doesn't support DPO or FUA
[    1.406816] sd 2:0:0:3: [sdz] 2048 512-byte logical blocks: (1.05 MB/1.00 
MiB)
[    1.406859] sd 2:0:0:3: Attached scsi generic sg25 type 0
[    1.406972] sd 2:0:0:3: [sdz] Write Protect is off
[    1.406975] sd 2:0:0:3: [sdz] Mode Sense: 63 00 00 08
[    1.407209] sd 2:0:0:3: [sdz] Write cache: enabled, read cache: enabled, 
doesn't support DPO or FUA
[    1.412134] sd 2:0:0:4: [sdy] Attached SCSI disk
[    1.412173] sd 2:0:0:5: [sdx] Attached SCSI disk
[    1.412669] sd 2:0:0:2: Attached scsi generic sg26 type 0
[    1.412796] sd 2:0:0:2: [sdaa] 2048 512-byte logical blocks: (1.05 MB/1.00 
MiB)
[    1.412941] sd 2:0:0:2: [sdaa] Write Protect is off
[    1.412943] sd 2:0:0:2: [sdaa] Mode Sense: 63 00 00 08
[    1.413207] sd 2:0:0:2: [sdaa] Write cache: enabled, read cache: enabled, 
doesn't support DPO or FUA
[    1.414442] sd 2:0:0:1: Attached scsi generic sg27 type 0
[    1.414495] sd 2:0:0:3: [sdz] Attached SCSI disk
[    1.418581] sd 2:0:0:1: [sdab] 2048 512-byte logical blocks: (1.05 MB/1.00 
MiB)
[    1.420628] sd 2:0:0:1: [sdab] Write Protect is off
[    1.420630] sd 2:0:0:1: [sdab] Mode Sense: 63 00 00 08
[    1.425977] sd 2:0:0:1: [sdab] Write cache: enabled, read cache: enabled, 
doesn't support DPO or FUA
[    1.460647] sd 2:0:0:2: [sdaa] Attached SCSI disk
[    1.508275] sd 2:0:0:1: [sdab] Attached SCSI disk
[    1.538175] EXT4-fs (sdab): VFS: Can't find ext4 filesystem
[    1.540218] Kernel panic - not syncing: Attempted to kill init! 
exitcode=0x00000100
[    1.540218] 
[    1.540222] CPU: 0 PID: 1 Comm: init Not tainted 
4.11.0-0.rc4.git1.1.fc27.x86_64 #1
[    1.540224] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 
1.10.2-1.fc26 04/01/2014
[    1.540225] Call Trace:
[    1.540234]  dump_stack+0x8e/0xd1
[    1.540243]  panic+0xe9/0x237
[    1.540282]  do_exit+0xd3f/0xd70
[    1.540289]  ? trace_hardirqs_on_caller+0xf4/0x1b0
[    1.540301]  SyS_exit+0x17/0x20
[    1.540307]  entry_SYSCALL_64_fastpath+0x1f/0xc2
[    1.540311] RIP: 0033:0x400e03
[    1.540313] RSP: 002b:00007ffc58c7b998 EFLAGS: 00000246 ORIG_RAX: 
000000000000003c
[    1.540316] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000400e03
[    1.540320] RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000000000000001
[    1.540322] RBP: 0000000000000000 R08: 0000000000403bc4 R09: 00007ffc58c7b863
[    1.540323] R10: 0000000000400e03 R11: 0000000000000246 R12: 0000000000000000
[    1.540325] R13: 0000000000000041 R14: 0000000000000003 R15: 00007f6668448010
[    1.540724] Kernel Offset: 0x13000000 from 0xffffffff81000000 (relocation 
range: 0xffffffff80000000-0xffffffffbfffffff)
[    1.652370] Rebooting in 1 seconds..


-- 
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
Read my programming and virtualization blog: http://rwmj.wordpress.com
libguestfs lets you edit virtual machines.  Supports shell scripting,
bindings from many languages.  http://libguestfs.org

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