[Libguestfs] [PATCH 2/4] v2v: chmod original OVA file if running as root (RHBZ#1430680).

In the case where we are going to read the disk directly from the OVA file (partial = true), we will create a qcow2 image backed by the OVA. If running as root, libvirt will run qemu as a non-root user (because of no qemu:///session support for root, which is a libvirt bug). qemu will not be able to read the backing file and thus will fail. To work around this problem, chmod the backing (OVA) file. This isn't a complete fix since (eg) the OVA might be located in a directory which isn't accessible by root, but there's only so much we can do here until libvirt is fixed. Thanks: Kun Wei. --- v2v/input_ova.ml | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/v2v/input_ova.ml b/v2v/input_ova.ml index fb6b286..e80ec82 100644 --- a/v2v/input_ova.ml +++ b/v2v/input_ova.ml @@ -171,7 +171,8 @@ object *) if Unix.geteuid () = 0 && backend_is_libvirt () then ( warning (f_"making OVA directory public readable to work around libvirt bug https://bugzilla.redhat.com/1045069"); - let cmd = [ "chmod"; "-R"; "go=u,go-w"; exploded ] in + let cmd = [ "chmod"; "-R"; "go=u,go-w"; exploded ] @ + if partial then [ ova ] else [] in ignore (run_command cmd) ); -- 2.9.3