fix: Allowed to assemble 2 volumes with the same names from config file.

mdadm allowes to assemble 2 volumes with the same names based on the
config file. The issue is fixed by iterating over the list of md device
identifiers and comparing the names of md devices against each other,
detecting identical names and blocking the assembly should the same names
be found.
Now having detected duplicate names, mdadm terminates without assembling
the container, displaying appropriate prompt.

Signed-off-by: Lukasz Orlowski <lukasz.orlowski@intel.com>
Signed-off-by: NeilBrown <neilb@suse.de>

1 files changed, 7 insertions, 0 deletions

diff --git a/mdadm.c b/mdadm.c
index 8e0ce186..c6a887a8 100644
--- a/mdadm.c
+++ b/mdadm.c
@@ -1292,6 +1292,13 @@ int main(int argc, char *argv[])
 			struct map_ent *map = NULL;
 			int cnt = 0;
 			int failures, successes;
+
+			if (conf_verify_devnames(array_list)) {
+				fprintf(stderr, Name
+					": Duplicate MD device names in "
+					"conf file were found.\n");
+				exit(1);
+			}
 			if (devlist == NULL) {
 				fprintf(stderr, Name ": No devices listed in conf file were found.\n");
 				exit(1);