dm exception store: fix exstore lookup to be case insensitive

commit f6bd4eb73cdf2a5bf954e497972842f39cabb7e3 upstream.

When snapshots are created using 'p' instead of 'P' as the
exception store type, the device-mapper table loading fails.

This patch makes the code case insensitive as intended and fixes some
regressions reported with device-mapper snapshots.

Signed-off-by: Jonathan Brassow <jbrassow@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Cc: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/md/dm-exception-store.c b/drivers/md/dm-exception-store.c
index a2e26c24214150cac23e92acf1391a212d60271b..b86b3c96a5750f214aaa859eb7e3838b93f25b0f 100644 (file)
--- a/drivers/md/dm-exception-store.c
+++ b/drivers/md/dm-exception-store.c
@@ -216,7 +216,7 @@ int dm_exception_store_create(struct dm_target *ti, int argc, char **argv,
                return -EINVAL;
        }
 
-       type = get_type(argv[1]);
+       type = get_type(&persistent);
        if (!type) {
                ti->error = "Exception store type not recognised";
                r = -EINVAL;