[Libguestfs] [libguestfs] Problem Connecting to RBD images using Sys::Guestfs Perl Module

Jon three18ti at gmail.com
Mon Nov 25 19:52:21 UTC 2013 

Hello,

I'm having trouble connecting to rbd images. It seems like somewhere the
name is getting chewed up.  I wonder if this is related to my previous
troubles [1] [2] with rbd images.

I'm trying to add an rbd image, but when I launch the guestfs object I get
an error:

>> libguestfs: trace: launch = -1 (error)

I'm adding a single RBD
>> libguestfs: trace: add_drive "libvirt-pool/build_vm_test-os"
"format:raw" "protocol:rbd" "server:192.168.0.35:6789 192.168.0.2:6789
192.168.0.40:6789"

But it seems like the name is getting chewed up in the call to kvm:

>> -drive
file=rbd:libvirt:mon_host=192.168.0.35\:6789\;192.168.0.2\:6789\;192.168.0.40\:6789:auth_supported=none,cache=writeback,format=raw,id=hd0,if=none
>> disk image
rbd:libvirt:mon_host=192.168.0.35\:6789\;192.168.0.2\:6789\;192.168.0.40\:6789:auth_supported=none:
Invalid argument

I am able to add non rbd images without an issue.

Any thoughts?

Thanks,
Jon A


[1] https://bugzilla.redhat.com/show_bug.cgi?id=1026688
[2] https://www.redhat.com/archives/libguestfs/2013-November/msg00003.html

Full Debug Output:

libguestfs: trace: set_verbose true
libguestfs: trace: set_verbose = 0
libguestfs: create: flags = 0, handle = 0x2e74d90, program = perl
libguestfs: trace: set_trace true
libguestfs: trace: set_trace = 0
libguestfs: trace: add_drive "libvirt-pool/build_vm_test-os" "format:raw"
"protocol:rbd" "server:192.168.0.35:6789 192.168.0.2:6789 192.168.0.40:6789"
libguestfs: trace: add_drive = 0
libguestfs: trace: launch
libguestfs: trace: get_tmpdir
libguestfs: trace: get_tmpdir = "/tmp"
libguestfs: trace: get_backend
libguestfs: trace: get_backend = "direct"
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/libguestfshHZEx5
libguestfs: launch: umask=0022
libguestfs: launch: euid=0
libguestfs: command: run: /usr/local/bin/supermin-helper
libguestfs: command: run: \ --verbose
libguestfs: command: run: \ -f checksum
libguestfs: command: run: \ --host-cpu x86_64
libguestfs: command: run: \ /usr/local/lib/guestfs/supermin.d
supermin helper [00000ms] whitelist = (not specified)
supermin helper [00000ms] host_cpu = x86_64
supermin helper [00000ms] dtb_wildcard = (not specified)
supermin helper [00000ms] inputs:
supermin helper [00000ms] inputs[0] = /usr/local/lib/guestfs/supermin.d
supermin helper [00000ms] outputs:
supermin helper [00000ms] kernel = (none)
supermin helper [00000ms] dtb = (none)
supermin helper [00000ms] initrd = (none)
supermin helper [00000ms] appliance = (none)
checking modpath /lib/modules/3.11.0-12-generic is a directory
checking modpath /lib/modules/3.8.0-32-generic is a directory
checking modpath /lib/modules/3.11.0-13-generic is a directory
picked kernel vmlinuz-3.11.0-13-generic
supermin helper [00000ms] finished creating kernel
supermin helper [00000ms] visiting /usr/local/lib/guestfs/supermin.d
supermin helper [00000ms] visiting
/usr/local/lib/guestfs/supermin.d/base.img.gz
supermin helper [00000ms] visiting
/usr/local/lib/guestfs/supermin.d/daemon.img.gz
supermin helper [00000ms] visiting
/usr/local/lib/guestfs/supermin.d/hostfiles
supermin helper [00015ms] visiting
/usr/local/lib/guestfs/supermin.d/init.img
supermin helper [00015ms] visiting
/usr/local/lib/guestfs/supermin.d/udev-rules.img
supermin helper [00015ms] adding kernel modules
supermin helper [00050ms] finished creating appliance
libguestfs: checksum of existing appliance:
399c008d1c7f2ca97e64a5c37f3111a9f07c694475e5566e7e7d3b615f8bb079
libguestfs: trace: get_cachedir
libguestfs: trace: get_cachedir = "/var/tmp"
libguestfs: [00054ms] begin testing qemu features
libguestfs: command: run: /usr/bin/kvm
libguestfs: command: run: \ -nographic
libguestfs: command: run: \ -help
W: kvm binary is deprecated, please use qemu-system-x86_64 instead
libguestfs: command: run: /usr/bin/kvm
libguestfs: command: run: \ -nographic
libguestfs: command: run: \ -version
W: kvm binary is deprecated, please use qemu-system-x86_64 instead
libguestfs: qemu version 1.5
libguestfs: command: run: /usr/bin/kvm
libguestfs: command: run: \ -nographic
libguestfs: command: run: \ -machine accel=kvm:tcg
libguestfs: command: run: \ -device ?
libguestfs: [00145ms] finished testing qemu features
[00147ms] /usr/bin/kvm \
    -global virtio-blk-pci.scsi=off \
    -nodefconfig \
    -nodefaults \
    -nographic \
    -machine accel=kvm:tcg \
    -cpu host,+kvmclock \
    -m 500 \
    -no-reboot \
    -no-hpet \
    -kernel /var/tmp/.guestfs-0/kernel.19756 \
    -initrd /var/tmp/.guestfs-0/initrd.19756 \
    -device virtio-scsi-pci,id=scsi \
    -drive
file=rbd:libvirt:mon_host=192.168.0.35\:6789\;192.168.0.2\:6789\;192.168.0.40\:6789:auth_supported=none,cache=writeback,format=raw,id=hd0,if=none
\
    -device scsi-hd,drive=hd0 \
    -drive
file=/var/tmp/.guestfs-0/root.19756,snapshot=on,id=appliance,cache=unsafe,if=none
\
    -device scsi-hd,drive=appliance \
    -device virtio-serial-pci \
    -serial stdio \
    -device sga \
    -chardev socket,path=/tmp/libguestfshHZEx5/guestfsd.sock,id=channel0 \
    -device virtserialport,chardev=channel0,name=org.libguestfs.channel.0 \
    -append 'panic=1 console=ttyS0 udevtimeout=600 no_timer_check acpi=off
printk.time=1 cgroup_disable=memory root=/dev/sdb selinux=0
guestfs_verbose=1 TERM=xterm'
W: kvm binary is deprecated, please use qemu-system-x86_64 instead
qemu-system-x86_64: -drive
file=rbd:libvirt:mon_host=192.168.0.35\:6789\;192.168.0.2\:6789\;192.168.0.40\:6789:auth_supported=none,cache=writeback,format=raw,id=hd0,if=none:
could not open disk image
rbd:libvirt:mon_host=192.168.0.35\:6789\;192.168.0.2\:6789\;192.168.0.40\:6789:auth_supported=none:
Invalid argument
libguestfs: child_cleanup: 0x2e74d90: child process died
libguestfs: sending SIGTERM to process 19861
libguestfs: trace: launch = -1 (error)
guestfs_launch failed, see earlier error messages at guestfs_test.pl line
62.
libguestfs: trace: close
libguestfs: closing guestfs handle 0x2e74d90 (state 0)
libguestfs: command: run: rm
libguestfs: command: run: \ -rf /tmp/libguestfshHZEx5
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