https://bugzilla.redhat.com/show_bug.cgi?id=1591732 If kernel is compiled without CONFIG_BLK_DEV_DM enabled, there is no /dev/mapper/control device and since dm_task_create() actually does some ioctl() over it creating a task may fail. To cope with this handle ENOENT and ENODEV gracefully. Signed-off-by: Michal Privoznik <mprivozn@xxxxxxxxxx> --- src/util/virdevmapper.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/src/util/virdevmapper.c b/src/util/virdevmapper.c index b365f20145..7da0dba911 100644 --- a/src/util/virdevmapper.c +++ b/src/util/virdevmapper.c @@ -87,8 +87,14 @@ virDevMapperGetTargetsImpl(const char *path, return ret; } - if (!(dmt = dm_task_create(DM_DEVICE_DEPS))) + if (!(dmt = dm_task_create(DM_DEVICE_DEPS))) { + if (errno == ENOENT || errno == ENODEV) { + /* It's okay. Kernel is probably built without + * devmapper support. */ + ret = 0; + } return ret; + } if (!dm_task_set_name(dmt, path)) { if (errno == ENOENT) { -- 2.16.4 -- libvir-list mailing list libvir-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/libvir-list
