Rich, you are right; the hypervisor is RHEV-H. As Itamar has just explained me,
hooks are executed on the hypervisor’s side (not on the RHEV-M, as I used to
think), so properly working libguestfs on the RHEV-H will resolve my issue.
Here is the output of the test tool:
************************************************************
* IMPORTANT NOTICE
*
* When reporting bugs, include the COMPLETE, UNEDITED
* output below in your bug report.
*
************************************************************
===== Test starts here =====
PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin
library version: 1.16.34rhel=6,release=2.el6
guestfs_get_append: (null)
guestfs_get_attach_method: appliance
guestfs_get_autosync: 1
guestfs_get_direct: 0
guestfs_get_memsize: 500
guestfs_get_network: 0
guestfs_get_path: /usr/lib64/guestfs
guestfs_get_pgroup: 0
guestfs_get_qemu: /usr/libexec/qemu-kvm
guestfs_get_recovery_proc: 1
guestfs_get_selinux: 0
guestfs_get_smp: 1
guestfs_get_trace: 0
guestfs_get_verbose: 1
host_cpu: x86_64
Launching appliance, timeout set to 600 seconds.
libguestfs: [00000ms] febootstrap-supermin-helper --verbose -f checksum
'/usr/lib64/guestfs/supermin.d' x86_64
supermin helper [00000ms] whitelist = (not specified), host_cpu = x86_64,
kernel = (null), initrd = (null), appliance = (null)
supermin helper [00000ms] inputs[0] = /usr/lib64/guestfs/supermin.d
febootstrap-supermin-helper: failed to find a suitable kernel.
I looked for kernels in /boot and modules in /lib/modules.
If this is a Xen guest, and you only have Xen domU kernels
installed, try installing a fullvirt kernel (only for
febootstrap use, you shouldn't boot the Xen guest with it).
libguestfs: error: cannot find any suitable libguestfs supermin, fixed or
old-style appliance on LIBGUESTFS_PATH (search path: /usr/lib64/guestfs)
libguestfs-test-tool: failed to launch appliance
libguestfs: closing guestfs handle 0x231d260 (state 0)
Thank you,
Vitaly Isaev
Виталий Исаев
Инженер-программист
Группа разработки и внедрения ПСЗИ
Департамент информационной безопасности
ОАО «Финтех»
-----Original Message-----
From: Richard W.M. Jones [mailto:rjo...@redhat.com]
Sent: Friday, November 22, 2013 1:12 PM
To: Исаев Виталий Анатольевич
Cc: Itamar Heim; libguestfs@redhat.com; fdeut...@redhat.com
Subject: Re: HA: [Libguestfs] Accessing iSCSI disc images from the RHEV Manager
using libguestfs
[CC to Fabian - can you comment on the ovirt-node problem below]
On Thu, Nov 21, 2013 at 10:02:46PM +0000, Исаев Виталий Анатольевич wrote:
> On 11/21/2013 05:56 PM, Richard W.M. Jones wrote:
> > When you say "cannot access them" do you get an error message?
> > Could it be an SELinux denial?
>
> Yes, when I am trying to open some logical volume on the hypervisor side, for
> instance:
> $ guestfish -a /dev/mapper/dm-xx
> libguestfs fails with an error message kind of that:
> $ libguestfs-supermin-helper: failed to find a suitable kernel.
> I looked for kernels in /boot and modules in /lib/modules.
> If this is a Xen guest, and you only have Xen domU kernels
> installed, try installing a fullvirt kernel (only for
> libguestfs use, you shouldn't boot the Xen guest with it).
> So this is correct because hypervisor's file system is minimalist and
> therefore contains kernel files neither in /boot nor in /lib/modules.
Ah I see, this is a slightly different problem. If this is RHEV-H / ovirt-node
then that's a bug in ovirt-node since it is supposed to have a working
libguestfs.
Can you paste the full, unedited output of:
libguestfs-test-tool
on the hypervisor.
> And it is still not clear for me, how should I implement interaction
> between the RHEV-M API, which tells me what logical volume (disk
> image) belongs to the every VM, and the hypervisor's, to which all the
> logical volume (disk images) are mapped.
>
> So can I access the VM's disk images directly from the RHEV Manager in
> case if manager, hypervisor and storage are different hosts?
I'm not sure about this, but I guess the hooks that Itamar pointed to before
should work.
Rich.
--
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
virt-p2v converts physical machines to virtual machines. Boot with a live CD
or over the network (PXE) and turn machines into KVM guests.
http://libguestfs.org/virt-v2v
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