Hi, <div>I am using libguestfs 1.12.0 and I am facing a problem with it .</div><div>I am using guestfs python bindings to &quot;launch&quot; a vdi image file . </div><div>It works fine except immediately after a VM is stopped(which uses the same vdi file) </div>
<div>i.e in normal conditions launch command  works but when a vm (which uses the same vdi file) is started - stopped , a call to &quot;launch&quot; command hangs the terminal. Please help . </div><div>this is the output of the libguestfs_debug : </div>
<div><br></div><div><div>libguestfs: new guestfs handle 0x7f0e3007dee0</div><div>libguestfs: trace: set_autosync true</div><div>libguestfs: trace: set_autosync = 0</div><div>libguestfs: trace: launch</div><div>libguestfs: [00000ms] febootstrap-supermin-helper --verbose -f checksum &#39;/usr/lib/guestfs/supermin.d&#39; x86_64</div>
<div>supermin helper [00000ms] whitelist = (not specified), host_cpu = x86_64, kernel = (null), initrd = (null), appliance = (null)</div><div>supermin helper [00000ms] inputs[0] = /usr/lib/guestfs/supermin.d</div><div>checking modpath /lib/modules/2.6.38-8-generic is a directory</div>
<div>picked vmlinuz-2.6.38-8-generic because modpath /lib/modules/2.6.38-8-generic exists</div><div>supermin helper [00000ms] finished creating kernel</div><div>supermin helper [00000ms] visiting /usr/lib/guestfs/supermin.d</div>
<div>supermin helper [00000ms] visiting /usr/lib/guestfs/supermin.d/base.img</div><div>supermin helper [00000ms] visiting /usr/lib/guestfs/supermin.d/daemon.img</div><div>supermin helper [00000ms] visiting /usr/lib/guestfs/supermin.d/hostfiles</div>
<div>supermin helper [00024ms] visiting /usr/lib/guestfs/supermin.d/init.img</div><div>supermin helper [00125ms] finished creating appliance</div><div>libguestfs: [00129ms] begin testing qemu features</div><div>libguestfs: [00144ms] finished testing qemu features</div>
<div>libguestfs: is_openable: /dev/kvm: No such file or directory</div><div>libguestfs: accept_from_daemon: 0x7f0e3007dee0 g-&gt;state = 1</div><div>libguestfs: [00146ms] /usr/bin/kvm \</div><div>    -drive &#39;file=/home/yeswanth/VirtualBox VMs/damnit/damnit.vdi,cache=off,if=virtio&#39; \</div>
<div>    -nodefconfig \</div><div>    -nodefaults \</div><div>    -nographic \</div><div>    -m 500 \</div><div>    -no-reboot \</div><div>    -no-hpet \</div><div>    -device virtio-serial \</div><div>    -serial stdio \</div>
<div>    -chardev socket,path=/tmp/libguestfszoC739/guestfsd.sock,id=channel0 \</div><div>    -device virtserialport,chardev=channel0,name=org.libguestfs.channel.0 \</div><div>    -kernel /var/tmp/.guestfs-1000/kernel.30876 \</div>
<div>    -initrd /var/tmp/.guestfs-1000/initrd.30876 \</div><div>    -append &#39;panic=1 console=ttyS0 udevtimeout=300 noapic acpi=off printk.time=1 cgroup_disable=memory selinux=0 guestfs_verbose=1 TERM=xterm &#39; \</div>
<div>    -drive file=/var/tmp/.guestfs-1000/root.30876,snapshot=on,if=virtio,cache=unsafe</div><div>open /dev/kvm: No such file or directory</div><div>Could not initialize KVM, will disable KVM support</div><div>[    0.000000] Initializing cgroup subsys cpuset</div>
<div>[    0.000000] Initializing cgroup subsys cpu</div><div>[    0.000000] Linux version 2.6.38-8-generic (buildd@allspice) (gcc version 4.5.2 (Ubuntu/Linaro 4.5.2-8ubuntu3) ) #42-Ubuntu SMP Mon Apr 11 03:31:24 UTC 2011 (Ubuntu 2.6.38-8.42-generic 2.6.38.2)</div>
<div>[    0.000000] Command line: panic=1 console=ttyS0 udevtimeout=300 noapic acpi=off printk.time=1 cgroup_disable=memory selinux=0 guestfs_verbose=1 TERM=xterm </div><div>[    0.000000] BIOS-provided physical RAM map:</div>
<div>[    0.000000]  BIOS-e820: 0000000000000000 - 000000000009bc00 (usable)</div><div>[    0.000000]  BIOS-e820: 000000000009bc00 - 00000000000a0000 (reserved)</div><div>[    0.000000]  BIOS-e820: 00000000000f0000 - 0000000000100000 (reserved)</div>
<div>[    0.000000]  BIOS-e820: 0000000000100000 - 000000001f3fd000 (usable)</div><div>[    0.000000]  BIOS-e820: 000000001f3fd000 - 000000001f400000 (reserved)</div><div>[    0.000000]  BIOS-e820: 00000000fffc0000 - 0000000100000000 (reserved)</div>
<div>[    0.000000] NX (Execute Disable) protection: active</div><div>[    0.000000] DMI 2.4 present.</div><div>[    0.000000] No AGP bridge found</div><div>[    0.000000] last_pfn = 0x1f3fd max_arch_pfn = 0x400000000</div>
<div>[    0.000000] x86 PAT enabled: cpu 0, old 0x0, new 0x7010600070106</div><div>[    0.000000] found SMP MP-table at [ffff8800000fd790] fd790</div><div>[    0.000000] init_memory_mapping: 0000000000000000-000000001f3fd000</div>
<div>[    0.000000] RAMDISK: 1f2df000 - 1f3f0000</div><div>[    0.000000] No NUMA configuration found</div><div>[    0.000000] Faking a node at 0000000000000000-000000001f3fd000</div><div>[    0.000000] Initmem setup node 0 0000000000000000-000000001f3fd000</div>
<div>[    0.000000]   NODE_DATA [000000001f3f5000 - 000000001f3f9fff]</div><div>[    0.000000] Zone PFN ranges:</div><div>[    0.000000]   DMA      0x00000010 -&gt; 0x00001000</div><div>[    0.000000]   DMA32    0x00001000 -&gt; 0x00100000</div>
<div>[    0.000000]   Normal   empty</div><div>[    0.000000] Movable zone start PFN for each node</div><div>[    0.000000] early_node_map[2] active PFN ranges</div><div>[    0.000000]     0: 0x00000010 -&gt; 0x0000009b</div>
<div>[    0.000000]     0: 0x00000100 -&gt; 0x0001f3fd</div><div>[    0.000000] SFI: Simple Firmware Interface v0.81 <a href="http://simplefirmware.org">http://simplefirmware.org</a></div><div>[    0.000000] Intel MultiProcessor Specification v1.4</div>
<div>[    0.000000] MPTABLE: OEM ID: BOCHSCPU</div><div>[    0.000000] MPTABLE: Product ID: 0.1         </div><div>[    0.000000] MPTABLE: APIC at: 0xFEE00000</div><div>[    0.000000] Processor #0 (Bootup-CPU)</div><div>[    0.000000] IOAPIC[0]: apic_id 1, version 17, address 0xfec00000, GSI 0-23</div>
<div>[    0.000000] Processors: 1</div><div>[    0.000000] SMP: Allowing 1 CPUs, 0 hotplug CPUs</div><div>[    0.000000] PM: Registered nosave memory: 000000000009b000 - 000000000009c000</div><div>[    0.000000] PM: Registered nosave memory: 000000000009c000 - 00000000000a0000</div>
<div>[    0.000000] PM: Registered nosave memory: 00000000000a0000 - 00000000000f0000</div><div>[    0.000000] PM: Registered nosave memory: 00000000000f0000 - 0000000000100000</div><div>[    0.000000] Allocating PCI resources starting at 1f400000 (gap: 1f400000:e0bc0000)</div>
<div>[    0.000000] Booting paravirtualized kernel on bare hardware</div><div>[    0.000000] setup_percpu: NR_CPUS:256 nr_cpumask_bits:256 nr_cpu_ids:1 nr_node_ids:1</div><div>[    0.000000] PERCPU: Embedded 28 pages/cpu @ffff88001f000000 s84416 r8192 d22080 u2097152</div>
<div>[    0.000000] Built 1 zonelists in Node order, mobility grouping on.  Total pages: 126124</div><div>[    0.000000] Policy zone: DMA32</div><div>[    0.000000] Kernel command line: panic=1 console=ttyS0 udevtimeout=300 noapic acpi=off printk.time=1 cgroup_disable=memory selinux=0 guestfs_verbose=1 TERM=xterm </div>
<div>[    0.000000] Disabling memory control group subsystem</div><div>[    0.000000] PID hash table entries: 2048 (order: 2, 16384 bytes)</div><div>[    0.000000] Checking aperture...</div><div>[    0.000000] No AGP bridge found</div>
<div>[    0.000000] Memory: 488716k/511988k available (5940k kernel code, 468k absent, 22804k reserved, 5017k data, 956k init)</div><div>[    0.000000] SLUB: Genslabs=15, HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1</div>
<div>[    0.000000] Hierarchical RCU implementation.</div><div>[    0.000000] <span class="Apple-tab-span" style="white-space:pre">	</span>RCU dyntick-idle grace-period acceleration is enabled.</div><div>[    0.000000] <span class="Apple-tab-span" style="white-space:pre">	</span>RCU-based detection of stalled CPUs is disabled.</div>
<div>[    0.000000] NR_IRQS:16640 nr_irqs:256 16</div><div>[    0.000000] Console: colour dummy device 80x25</div><div>[    0.000000] console [ttyS0] enabled</div><div>[    0.000000] Fast TSC calibration using PIT</div><div>
[    0.000000] Detected 2526.022 MHz processor.</div><div>[    0.000472] Calibrating delay loop (skipped), value calculated using timer frequency.. 5052.04 BogoMIPS (lpj=25260220)</div><div>[    0.001006] pid_max: default: 32768 minimum: 301</div>
<div>[    0.001935] Security Framework initialized</div><div>[    0.004110] AppArmor: AppArmor initialized</div><div>[    0.004301] Yama: becoming mindful.</div><div>[    0.008970] Dentry cache hash table entries: 65536 (order: 7, 524288 bytes)</div>
<div>[    0.010000] Inode-cache hash table entries: 32768 (order: 6, 262144 bytes)</div><div>[    0.010000] Mount-cache hash table entries: 256</div><div>[    0.010000] Initializing cgroup subsys ns</div><div>[    0.010000] ns_cgroup deprecated: consider using the &#39;clone_children&#39; flag without the ns_cgroup.</div>
<div>[    0.010000] Initializing cgroup subsys cpuacct</div><div>[    0.010000] Initializing cgroup subsys memory</div><div>[    0.010000] Initializing cgroup subsys devices</div><div>[    0.010000] Initializing cgroup subsys freezer</div>
<div>[    0.010000] Initializing cgroup subsys net_cls</div><div>[    0.010000] Initializing cgroup subsys blkio</div><div>[    0.010000] mce: CPU supports 10 MCE banks</div><div>[    0.010000] SMP alternatives: switching to UP code</div>
<div>[    0.010000] Freeing SMP alternatives: 20k freed</div><div>[    0.010000] ftrace: allocating 24314 entries in 96 pages</div><div>[    0.010000] Setting APIC routing to flat</div><div>[    0.010000] CPU0: AMD QEMU Virtual CPU version 0.14.0 stepping 03</div>
<div><br></div><div><br></div>The terminal hangs after this output . <br>-- <br>Cheers,<div>Yeswanth</div><br>
</div>