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https://github.com/libguestfs/libguestfs.git
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ecbf093850
Libvirt >= 2.1.0 now allows you to open files which have a "json:" QEMU pseudo-URL as backingfile, whereas previously it would fail hard in this case (RHBZ#1134878). When virt-v2v performs conversions from Xen (over SSH) or vCenter (over HTTPS) it uses these pseudo-URLs as backingfiles. We had to tell people to use LIBGUESTFS_BACKEND=direct to avoid libvirt in this situation. This commit narrows the check so it will now only print the error if libvirt < 2.1.0 and LIBGUESTFS_BACKEND=direct is not set. Also the error is modified to tell users they can either upgrade libvirt or set LIBGUESTFS_BACKEND=direct to work around the problem. Note there is not an easy way apart from checking the version number of libvirt to tell if the json pseudo-URL is supported. As a side-effect, this commit also prints the libvirt version number in debugging output when virt-v2v starts up, which is sometimes useful information for narrowing down bugs (it is in fact already printed by libguestfs, so this is duplicate information, but it's a bit easier to find when it's at the top of the debug). Thanks: Peter Krempa.
56 lines
2.5 KiB
OCaml
56 lines
2.5 KiB
OCaml
(* virt-v2v
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* Copyright (C) 2009-2016 Red Hat Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*)
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(** This module implements various [virsh]-like commands, but with
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non-broken authentication handling.
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If you do [virsh dumpxml foo] and if the libvirt source (eg. ESX)
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requires an interactive password, then virsh unhelpfully sends the
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password prompt to stdout, which is the same place we would be
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reading the XML from. This file works around this brokenness. *)
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val dumpxml : ?password:string -> ?conn:string -> string -> string
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(** [dumpxml ?password ?conn dom] returns the libvirt XML of domain [dom].
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The optional [?conn] parameter is the libvirt connection URI.
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[dom] may be a guest name or UUID. *)
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val pool_dumpxml : ?conn:string -> string -> string
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(** [pool_dumpxml ?conn pool] returns the libvirt XML of pool [pool].
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The optional [?conn] parameter is the libvirt connection URI.
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[pool] may be a pool name or UUID. *)
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val vol_dumpxml : ?conn:string -> string -> string -> string
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(** [vol_dumpxml ?conn pool vol] returns the libvirt XML of volume [vol],
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which is part of the pool [pool].
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The optional [?conn] parameter is the libvirt connection URI.
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[pool] may be a pool name or UUID. *)
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val capabilities : ?conn:string -> unit -> string
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(** [capabilities ?conn ()] returns the libvirt capabilities XML.
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The optional [?conn] parameter is the libvirt connection URI. *)
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val domain_exists : ?conn:string -> string -> bool
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(** [domain_exists ?conn dom] returns a boolean indicating if the
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the libvirt XML domain [dom] exists.
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The optional [?conn] parameter is the libvirt connection URI.
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[dom] may be a guest name, but not a UUID. *)
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val libvirt_get_version : unit -> int * int * int
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(** [libvirt_get_version] returns the triple [(major, minor, release)]
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version number of the libvirt library that we are linked against. *)
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