[CCing the libguestfs mailing list - as Rich responded on IRC about your question on timeout.] On Sun, Feb 21, 2016 at 10:07 PM, Thomas Kee <xsited@yahoo.com> wrote:> Hi Kashyap, > > Thanks for offering to help. The day job caused a pause and it took me an > hour to reassert where I was in the process. I usually hang out on freenet > as xsited. I am still reading the process for formally reporting the issue > as described on the site. > > Walking through this has shown me some significant difference from > previously working almost exclusively with qemu-system-x86_64. It's > different. As you asserted before -cpu host is required on the cubietruck > to allow kvm to be utilized due to the lack of emulation support. > > In the meantime, I was waiting to get my hands on a cortex-a15 for the > purpose of sussing out an effort involved for a debian 8 host and a openwrt > guest. Because the qemu-system-arm supports vexpress-a15 there is better > emulation support, but compiling the guest kernel to match the target host > cpu offers a better chance that kvm acceleration is utilize? In other word > -cpu host is always better?I haven't tested this in a while to generalize like that. But last time tested (which was more than a year ago) Cubietruck, I had to use the host CPU model for the guests[1]. And I don't have it with me anymore to test again. [1] Refer to this: https://bugzilla.redhat.com/show_bug.cgi?id=1171501> > qemu-system-arm -kernel zImage -dtb cortex_a15x4.dtb -m 512 -M vexpress-a15 > -cpu cortex-a15 > > Is my fuzz understanding of this part correct? > > Below are the logs I collected since last weekend.Regarding your timeout, from #libguestfs on Freenode, Rich says: ------ <rwmjones> kashyap: yes, they need to use the libguestfs-test-tool -t option, basically because 32 bit arm is far too slow to run libguestfs well (probably also they don't have KVM acceleration enabled in their kernel) <rwmjones> http://libguestfs.org/libguestfs-test-tool.1.html#options <rwmjones> but yeah, they're going to have loads of trouble running libguestfs on such slow hardware ------> root@cubietruck:~# /usr/bin/qemu-system-arm --version > QEMU emulator version 2.5.0 (Debian 1:2.5+dfsg-5), Copyright (c) 2003-2008 > Fabrice Bellard > > root@cubietruck:~# /usr/bin/libguestfs-test-tool -V > libguestfs-test-tool 1.30.6 > root@cubietruck:~# /usr/bin/libguestfs-test-tool > ************************************************************ > * IMPORTANT NOTICE > * > * When reporting bugs, include the COMPLETE, UNEDITED > * output below in your bug report. > * > ************************************************************ > PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin > SELinux: sh: 1: getenforce: not found > guestfs_get_append: (null) > guestfs_get_autosync: 1 > guestfs_get_backend: direct > guestfs_get_backend_settings: [] > guestfs_get_cachedir: /var/tmp > guestfs_get_direct: 0 > guestfs_get_hv: /usr/bin/qemu-system-arm > guestfs_get_memsize: 500 > guestfs_get_network: 0 > guestfs_get_path: /usr/lib/arm-linux-gnueabihf/guestfs > guestfs_get_pgroup: 0 > guestfs_get_program: libguestfs-test-tool > guestfs_get_recovery_proc: 1 > guestfs_get_selinux: 0 > guestfs_get_smp: 1 > guestfs_get_tmpdir: /tmp > guestfs_get_trace: 0 > guestfs_get_verbose: 1 > host_cpu: arm > Launching appliance, timeout set to 600 seconds. > libguestfs: launch: program=libguestfs-test-tool > libguestfs: launch: version=1.30.6 > libguestfs: launch: backend registered: unix > libguestfs: launch: backend registered: uml > libguestfs: launch: backend registered: libvirt > libguestfs: launch: backend registered: direct > libguestfs: launch: backend=direct > libguestfs: launch: tmpdir=/tmp/libguestfssaEUV0 > libguestfs: launch: umask=0022 > libguestfs: launch: euid=0 > libguestfs: [00005ms] begin building supermin appliance > libguestfs: [00006ms] run supermin > libguestfs: command: run: /usr/bin/supermin > libguestfs: command: run: \ --build > libguestfs: command: run: \ --verbose > libguestfs: command: run: \ --if-newer > libguestfs: command: run: \ --lock /var/tmp/.guestfs-0/lock > libguestfs: command: run: \ --copy-kernel > libguestfs: command: run: \ -f ext2 > libguestfs: command: run: \ --host-cpu arm > libguestfs: command: run: \ --dtb vexpress*a15-tc1.dtb > libguestfs: command: run: \ /usr/lib/arm-linux-gnueabihf/guestfs/supermin.d > libguestfs: command: run: \ -o /var/tmp/.guestfs-0/appliance.d > supermin: version: 5.1.14 > supermin: package handler: debian/dpkg > supermin: acquiring lock on /var/tmp/.guestfs-0/lock > supermin: if-newer: output does not need rebuilding > libguestfs: [00075ms] finished building supermin appliance > libguestfs: [00076ms] begin testing qemu features > libguestfs: command: run: /usr/bin/qemu-system-arm > libguestfs: command: run: \ -display none > libguestfs: command: run: \ -help > libguestfs: command: run: /usr/bin/qemu-system-arm > libguestfs: command: run: \ -display none > libguestfs: command: run: \ -version > libguestfs: qemu version 2.5 > libguestfs: command: run: /usr/bin/qemu-system-arm > libguestfs: command: run: \ -display none > libguestfs: command: run: \ -M virt > libguestfs: command: run: \ -machine accel=kvm:tcg > libguestfs: command: run: \ -device ? > libguestfs: [00573ms] finished testing qemu features > [00633ms] /usr/bin/qemu-system-arm \ > -global virtio-blk-device.scsi=off \ > -nodefconfig \ > -enable-fips \ > -nodefaults \ > -display none \ > -M virt \ > -cpu host \ > -machine accel=kvm:tcg \ > -m 500 \ > -no-reboot \ > -rtc driftfix=slew \ > -global kvm-pit.lost_tick_policy=discard \ > -kernel /var/tmp/.guestfs-0/appliance.d/kernel \ > -dtb /var/tmp/.guestfs-0/appliance.d/dtb \ > -initrd /var/tmp/.guestfs-0/appliance.d/initrd \ > -device virtio-scsi-device,id=scsi \ > -drive > file=/tmp/libguestfssaEUV0/scratch.1,cache=unsafe,format=raw,id=hd0,if=none > \ > -device scsi-hd,drive=hd0 \ > -drive > file=/var/tmp/.guestfs-0/appliance.d/root,snapshot=on,id=appliance,cache=unsafe,if=none > \ > -device scsi-hd,drive=appliance \ > -device virtio-serial-device \ > -serial stdio \ > -chardev socket,path=/tmp/libguestfssaEUV0/guestfsd.sock,id=channel0 \ > -device virtserialport,chardev=channel0,name=org.libguestfs.channel.0 \ > -append 'panic=1 mem=500M console=ttyAMA0 udevtimeout=6000 > udev.event-timeout=6000 no_timer_check acpi=off printk.time=1 > cgroup_disable=memory root=/dev/sdb selinux=0 guestfs_verbose=1 > TERM=xterm-256color' > qemu-system-arm: Warning: global kvm-pit.lost_tick_policy has invalid class > name > Alarm clock > > > root@cubietruck:~# virt-host-validate > QEMU: Checking for hardware virtualization > : WARN (Only emulated CPUs are available, performance will be significantly > limited) > QEMU: Checking if device /dev/vhost-net exists > : WARN (Load the 'vhost_net' module to improve performance of virtio > networking) > QEMU: Checking if device /dev/net/tun exists > : PASS > QEMU: Checking for cgroup 'memory' controller support > : WARN (Enable CONFIG_MEMCG in kernel Kconfig file) > QEMU: Checking for cgroup 'cpu' controller support > : PASS > QEMU: Checking for cgroup 'cpu' controller mount-point > : PASS > QEMU: Checking for cgroup 'cpuacct' controller support > : PASS > QEMU: Checking for cgroup 'cpuacct' controller mount-point > : PASS > QEMU: Checking for cgroup 'devices' controller support > : PASS > QEMU: Checking for cgroup 'devices' controller mount-point > : PASS > QEMU: Checking for cgroup 'net_cls' controller support > : PASS > QEMU: Checking for cgroup 'net_cls' controller mount-point > : PASS > QEMU: Checking for cgroup 'blkio' controller support > : PASS > QEMU: Checking for cgroup 'blkio' controller mount-point > : PASS > QEMU: Checking for device assignment IOMMU support > : WARN (Unknown if this platform has IOMMU support) > LXC: Checking for Linux >= 2.6.26 > : PASS > LXC: Checking for namespace ipc > : PASS > LXC: Checking for namespace mnt > : PASS > LXC: Checking for namespace pid > : PASS > LXC: Checking for namespace uts > : PASS > LXC: Checking for namespace net > : PASS > LXC: Checking for namespace user > : PASS > LXC: Checking for cgroup 'memory' controller support > : FAIL (Enable CONFIG_MEMCG in kernel Kconfig file) > LXC: Checking for cgroup 'cpu' controller support > : PASS > LXC: Checking for cgroup 'cpu' controller mount-point > : PASS > LXC: Checking for cgroup 'cpuacct' controller support > : PASS > LXC: Checking for cgroup 'cpuacct' controller mount-point > : PASS > LXC: Checking for cgroup 'devices' controller support > : PASS > LXC: Checking for cgroup 'devices' controller mount-point > : PASS > LXC: Checking for cgroup 'net_cls' controller support > : PASS > LXC: Checking for cgroup 'net_cls' controller mount-point > : PASS > LXC: Checking for cgroup 'freezer' controller support > : PASS > LXC: Checking for cgroup 'freezer' controller mount-point > : PASS > root@cubietruck:~# > > Kashyap Chamarthy > February 16, 2016 at 1:08 PM > > On Tue, Feb 16, 2016 at 8:15 PM, Thomas Kee <xsited@yahoo.com> wrote: > > Thanks for the responds and the tool. > > I am getting an Alarm timeout when running libguestfs-test-tool and it > tries to launch qemu-system-arm -cpu host for the first time. > Not sure if it is bug report worthy yet. > > At this point, it's better if you hop over to #libguestfs channel on > Freenode, I'm there (but it's late at the moment here in western > Europe). I'm there during day time. And, there are other friendly > developers that can help out. > > But let me look at > virt-host-validate. > > Good luck! > > -t > > Kashyap Chamarthy > February 16, 2016 at 1:33 AM > > On Tue, Feb 16, 2016 at 1:15 AM, Thomas Kee <xsited@yahoo.com> wrote: > > Oh boy. 10 second later, I remember /dev/kvm. Too much xen lately. > > :-) Yeah. > > A related handy tool is `virt-host-validate` , which will perform a > bunch of KVM-related checks: > > --------------------- > $ virt-host-validate > QEMU: Checking for hardware virtualization > : PASS > QEMU: Checking if device /dev/kvm exists > : PASS > QEMU: Checking if device /dev/kvm is accessible > : PASS > QEMU: Checking if device /dev/vhost-net exists > : PASS > QEMU: Checking if device /dev/net/tun exists > : PASS > LXC: Checking for Linux >= 2.6.26 > : PASS > --------------------- > > Regards, > Kashyap > > thx > > Thomas Kee > February 15, 2016 at 3:34 PM > > Hi, > > Thanks for the write up. Very helpful. Just a couple of doubts: > How are you checking the kernel is built with KVM module enabled? > With more current QEMU -cpu [ -machine ] still is valid ? > > Thanks, > > Thomas > > > root@cubietruck:~# dmesg | grep CPU > [ 0.000000] CPU: ARMv7 Processor [410fc074] revision 4 (ARMv7), > cr=30c5387d > [ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing > instruction cache > [ 0.000000] PERCPU: Embedded 12 pages/cpu @ee5c0000 s19916 r8192 d21044 > u49152 > [ 0.000000] RCU restricting CPUs from NR_CPUS=4 to nr_cpu_ids=2. > [ 0.004932] CPU: Testing write buffer coherency: ok > [ 0.046656] CPU0: thread -1, cpu 0, socket 0, mpidr 80000000 > [ 0.052951] CPU1: thread -1, cpu 1, socket 0, mpidr 80000001 > [ 0.053072] Brought up 2 CPUs > [ 0.053106] CPU: All CPU(s) started in HYP mode. > [ 0.053111] CPU: Virtualization extensions available. > [ 1.572315] ledtrig-cpu: registered to indicate activity on CPUs > [ 1.575670] ThumbEE CPU extension supported. > root@cubietruck:~# dmesg | grep SMP > [ 0.000000] Linux version 4.3.0-1-armmp-lpae > (debian-kernel@lists.debian.org) (gcc version 4.9.3 (Debian 4.9.3-11) ) #1 > SMP Debian 4.3.5-1 (2016-02-06) > [ 0.000000] Forcing write-allocate cache policy for SMP > [ 0.053098] SMP: Total of 2 processors activated (96.00 BogoMIPS). > root@cubietruck:~# dmesg | grep kvm > [ 1.499947] kvm [1]: interrupt-controller@1c84000 IRQ51 > [ 1.500434] kvm [1]: timer IRQ19 > [ 1.500462] kvm [1]: Hyp mode initialized successfully > root@cubietruck:~# uname -a > Linux cubietruck 4.3.0-1-armmp-lpae #1 SMP Debian 4.3.5-1 (2016-02-06) > armv7l GNU/Linux > root@cubietruck:~# qemu-system-arm -machine help > akita Sharp SL-C1000 (Akita) PDA (PXA270) > borzoi Sharp SL-C3100 (Borzoi) PDA (PXA270) > canon-a1100 Canon PowerShot A1100 IS > cheetah Palm Tungsten|E aka. Cheetah PDA (OMAP310) > collie Sharp SL-5500 (Collie) PDA (SA-1110) > connex Gumstix Connex (PXA255) > cubieboard cubietech cubieboard > highbank Calxeda Highbank (ECX-1000) > imx25-pdk ARM i.MX25 PDK board (ARM926) > integratorcp ARM Integrator/CP (ARM926EJ-S) > kzm ARM KZM Emulation Baseboard (ARM1136) > lm3s6965evb Stellaris LM3S6965EVB > lm3s811evb Stellaris LM3S811EVB > mainstone Mainstone II (PXA27x) > midway Calxeda Midway (ECX-2000) > musicpal Marvell 88w8618 / MusicPal (ARM926EJ-S) > n800 Nokia N800 tablet aka. RX-34 (OMAP2420) > n810 Nokia N810 tablet aka. RX-44 (OMAP2420) > netduino2 Netduino 2 Machine > none empty machine > nuri Samsung NURI board (Exynos4210) > realview-eb ARM RealView Emulation Baseboard (ARM926EJ-S) > realview-eb-mpcore ARM RealView Emulation Baseboard (ARM11MPCore) > realview-pb-a8 ARM RealView Platform Baseboard for Cortex-A8 > realview-pbx-a9 ARM RealView Platform Baseboard Explore for Cortex-A9 > smdkc210 Samsung SMDKC210 board (Exynos4210) > spitz Sharp SL-C3000 (Spitz) PDA (PXA270) > sx1 Siemens SX1 (OMAP310) V2 > sx1-v1 Siemens SX1 (OMAP310) V1 > terrier Sharp SL-C3200 (Terrier) PDA (PXA270) > tosa Sharp SL-6000 (Tosa) PDA (PXA255) > verdex Gumstix Verdex (PXA270) > versatileab ARM Versatile/AB (ARM926EJ-S) > versatilepb ARM Versatile/PB (ARM926EJ-S) > vexpress-a15 ARM Versatile Express for Cortex-A15 > vexpress-a9 ARM Versatile Express for Cortex-A9 > virt ARM Virtual Machine > xilinx-zynq-a9 Xilinx Zynq Platform Baseboard for Cortex-A9 > z2 Zipit Z2 (PXA27x) > > > > -- > > Thomas Kee > February 15, 2016 at 4:15 PM > Oh boy. 10 second later, I remember /dev/kvm. Too much xen lately. > > thx > > > Thomas Kee > February 15, 2016 at 3:34 PM > > Hi, > > Thanks for the write up. Very helpful. Just a couple of doubts: > How are you checking the kernel is built with KVM module enabled? > With more current QEMU -cpu [ -machine ] still is valid ? > > Thanks, > > Thomas > > > root@cubietruck:~# dmesg | grep CPU > [ 0.000000] CPU: ARMv7 Processor [410fc074] revision 4 (ARMv7), > cr=30c5387d > [ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing > instruction cache > [ 0.000000] PERCPU: Embedded 12 pages/cpu @ee5c0000 s19916 r8192 d21044 > u49152 > [ 0.000000] RCU restricting CPUs from NR_CPUS=4 to nr_cpu_ids=2. > [ 0.004932] CPU: Testing write buffer coherency: ok > [ 0.046656] CPU0: thread -1, cpu 0, socket 0, mpidr 80000000 > [ 0.052951] CPU1: thread -1, cpu 1, socket 0, mpidr 80000001 > [ 0.053072] Brought up 2 CPUs > [ 0.053106] CPU: All CPU(s) started in HYP mode. > [ 0.053111] CPU: Virtualization extensions available. > [ 1.572315] ledtrig-cpu: registered to indicate activity on CPUs > [ 1.575670] ThumbEE CPU extension supported. > root@cubietruck:~# dmesg | grep SMP > [ 0.000000] Linux version 4.3.0-1-armmp-lpae > (debian-kernel@lists.debian.org) (gcc version 4.9.3 (Debian 4.9.3-11) ) #1 > SMP Debian 4.3.5-1 (2016-02-06) > [ 0.000000] Forcing write-allocate cache policy for SMP > [ 0.053098] SMP: Total of 2 processors activated (96.00 BogoMIPS). > root@cubietruck:~# dmesg | grep kvm > [ 1.499947] kvm [1]: interrupt-controller@1c84000 IRQ51 > [ 1.500434] kvm [1]: timer IRQ19 > [ 1.500462] kvm [1]: Hyp mode initialized successfully > root@cubietruck:~# uname -a > Linux cubietruck 4.3.0-1-armmp-lpae #1 SMP Debian 4.3.5-1 (2016-02-06) > armv7l GNU/Linux > root@cubietruck:~# qemu-system-arm -machine help > akita Sharp SL-C1000 (Akita) PDA (PXA270) > borzoi Sharp SL-C3100 (Borzoi) PDA (PXA270) > canon-a1100 Canon PowerShot A1100 IS > cheetah Palm Tungsten|E aka. Cheetah PDA (OMAP310) > collie Sharp SL-5500 (Collie) PDA (SA-1110) > connex Gumstix Connex (PXA255) > cubieboard cubietech cubieboard > highbank Calxeda Highbank (ECX-1000) > imx25-pdk ARM i.MX25 PDK board (ARM926) > integratorcp ARM Integrator/CP (ARM926EJ-S) > kzm ARM KZM Emulation Baseboard (ARM1136) > lm3s6965evb Stellaris LM3S6965EVB > lm3s811evb Stellaris LM3S811EVB > mainstone Mainstone II (PXA27x) > midway Calxeda Midway (ECX-2000) > musicpal Marvell 88w8618 / MusicPal (ARM926EJ-S) > n800 Nokia N800 tablet aka. RX-34 (OMAP2420) > n810 Nokia N810 tablet aka. RX-44 (OMAP2420) > netduino2 Netduino 2 Machine > none empty machine > nuri Samsung NURI board (Exynos4210) > realview-eb ARM RealView Emulation Baseboard (ARM926EJ-S) > realview-eb-mpcore ARM RealView Emulation Baseboard (ARM11MPCore) > realview-pb-a8 ARM RealView Platform Baseboard for Cortex-A8 > realview-pbx-a9 ARM RealView Platform Baseboard Explore for Cortex-A9 > smdkc210 Samsung SMDKC210 board (Exynos4210) > spitz Sharp SL-C3000 (Spitz) PDA (PXA270) > sx1 Siemens SX1 (OMAP310) V2 > sx1-v1 Siemens SX1 (OMAP310) V1 > terrier Sharp SL-C3200 (Terrier) PDA (PXA270) > tosa Sharp SL-6000 (Tosa) PDA (PXA255) > verdex Gumstix Verdex (PXA270) > versatileab ARM Versatile/AB (ARM926EJ-S) > versatilepb ARM Versatile/PB (ARM926EJ-S) > vexpress-a15 ARM Versatile Express for Cortex-A15 > vexpress-a9 ARM Versatile Express for Cortex-A9 > virt ARM Virtual Machine > xilinx-zynq-a9 Xilinx Zynq Platform Baseboard for Cortex-A9 > z2 Zipit Z2 (PXA27x) > > > > -- >[...] -- /kashyap
Richard W.M. Jones
2016-Feb-22 14:06 UTC
Re: [Libguestfs] Cubietruck: QEMU, KVM and Fedora
On Mon, Feb 22, 2016 at 12:59:47PM +0100, Kashyap Chamarthy wrote:> > root@cubietruck:~# /usr/bin/libguestfs-test-tool -V > > libguestfs-test-tool 1.30.6[...]> > [00633ms] /usr/bin/qemu-system-arm \ > > -global virtio-blk-device.scsi=off \ > > -nodefconfig \ > > -enable-fips \ > > -nodefaults \ > > -display none \ > > -M virt \ > > -cpu host \ > > -machine accel=kvm:tcg \ > > -m 500 \ > > -no-reboot \ > > -rtc driftfix=slew \ > > -global kvm-pit.lost_tick_policy=discard \ > > -kernel /var/tmp/.guestfs-0/appliance.d/kernel \ > > -dtb /var/tmp/.guestfs-0/appliance.d/dtb \ > > -initrd /var/tmp/.guestfs-0/appliance.d/initrd \ > > -device virtio-scsi-device,id=scsi \ > > -drive > > file=/tmp/libguestfssaEUV0/scratch.1,cache=unsafe,format=raw,id=hd0,if=none > > \ > > -device scsi-hd,drive=hd0 \ > > -drive > > file=/var/tmp/.guestfs-0/appliance.d/root,snapshot=on,id=appliance,cache=unsafe,if=none > > \ > > -device scsi-hd,drive=appliance \ > > -device virtio-serial-device \ > > -serial stdio \ > > -chardev socket,path=/tmp/libguestfssaEUV0/guestfsd.sock,id=channel0 \ > > -device virtserialport,chardev=channel0,name=org.libguestfs.channel.0 \ > > -append 'panic=1 mem=500M console=ttyAMA0 udevtimeout=6000 > > udev.event-timeout=6000 no_timer_check acpi=off printk.time=1 > > cgroup_disable=memory root=/dev/sdb selinux=0 guestfs_verbose=1 > > TERM=xterm-256color' > > qemu-system-arm: Warning: global kvm-pit.lost_tick_policy has invalid class > > name > > Alarm clockThe main problem is that the original poster's kernel doesn't boot on top of qemu. I can't see from the logs what kernel they are trying to use, but that's going to be a problem. Strongly suggest: (a) Switch to libguestfs from git, since the version you are using is 8 months old, and I completely changed how DTBs are handled in the latest version. (b) Don't run stuff as root. (c) With the version from git, do: ./configure rm -rf tmp/.guestfs-* make clean make make quickcheck and let us see the complete log of that. Instructions for building libguestfs from source can be found here: http://libguestfs.org/guestfs-building.1.html Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones Read my programming and virtualization blog: http://rwmj.wordpress.com virt-top is 'top' for virtual machines. Tiny program with many powerful monitoring features, net stats, disk stats, logging, etc. http://people.redhat.com/~rjones/virt-top
Hi Kashyap, Richard, Before I moved on to new things I wanted to let you know that it took a bit of package finesse and some time, but I was able to use the git repo make it through libguestfs-test-tool without issue on this platform: Linux cubietruck 4.3.0-1-armmp-lpae #1 SMP Debian 4.3.5-1 (2016-02-06) armv7l GNU/Linux The log is attached. I now have bigger brain about arm-kvm thanks to your help. Cheers, Thomas Richard W.M. Jones wrote:> On Mon, Feb 22, 2016 at 12:59:47PM +0100, Kashyap Chamarthy wrote: >>> root@cubietruck:~# /usr/bin/libguestfs-test-tool -V >>> libguestfs-test-tool 1.30.6 > [...] >>> [00633ms] /usr/bin/qemu-system-arm \ >>> -global virtio-blk-device.scsi=off \ >>> -nodefconfig \ >>> -enable-fips \ >>> -nodefaults \ >>> -display none \ >>> -M virt \ >>> -cpu host \ >>> -machine accel=kvm:tcg \ >>> -m 500 \ >>> -no-reboot \ >>> -rtc driftfix=slew \ >>> -global kvm-pit.lost_tick_policy=discard \ >>> -kernel /var/tmp/.guestfs-0/appliance.d/kernel \ >>> -dtb /var/tmp/.guestfs-0/appliance.d/dtb \ >>> -initrd /var/tmp/.guestfs-0/appliance.d/initrd \ >>> -device virtio-scsi-device,id=scsi \ >>> -drive >>> file=/tmp/libguestfssaEUV0/scratch.1,cache=unsafe,format=raw,id=hd0,if=none >>> \ >>> -device scsi-hd,drive=hd0 \ >>> -drive >>> file=/var/tmp/.guestfs-0/appliance.d/root,snapshot=on,id=appliance,cache=unsafe,if=none >>> \ >>> -device scsi-hd,drive=appliance \ >>> -device virtio-serial-device \ >>> -serial stdio \ >>> -chardev socket,path=/tmp/libguestfssaEUV0/guestfsd.sock,id=channel0 \ >>> -device virtserialport,chardev=channel0,name=org.libguestfs.channel.0 \ >>> -append 'panic=1 mem=500M console=ttyAMA0 udevtimeout=6000 >>> udev.event-timeout=6000 no_timer_check acpi=off printk.time=1 >>> cgroup_disable=memory root=/dev/sdb selinux=0 guestfs_verbose=1 >>> TERM=xterm-256color' >>> qemu-system-arm: Warning: global kvm-pit.lost_tick_policy has invalid class >>> name >>> Alarm clock > > The main problem is that the original poster's kernel doesn't boot on > top of qemu. I can't see from the logs what kernel they are trying to > use, but that's going to be a problem. > > Strongly suggest: > > (a) Switch to libguestfs from git, since the version you are using is > 8 months old, and I completely changed how DTBs are handled in the > latest version. > > (b) Don't run stuff as root. > > (c) With the version from git, do: > > ./configure > rm -rf tmp/.guestfs-* > make clean > make > make quickcheck > > and let us see the complete log of that. > > Instructions for building libguestfs from source can be found here: > > http://libguestfs.org/guestfs-building.1.html > > Rich. >-- <https://www.postbox-inc.com/?utm_source=email&utm_medium=siglink&utm_campaign=reach>