shaba/libvirt
1
0
Fork 0
mirror of https://gitlab.com/libvirt/libvirt.git synced 2025-01-09 01:18:00 +03:00
Code Releases Activity

virDevMapperGetTargetsImpl: Be tolerant to kernels without DM support

Browse Source 
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@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This commit is contained in:
Michal Privoznik 2018-07-13 14:31:16 +02:00
parent 318d54e520
commit 170d1e31df
1 changed files with 7 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
src/util/virdevmapper.c
View File

@ -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) {