mdopen() will use create_named_array() to ask the kernel to create the given md array, but only if it is given a number or name. If it is NOT given a name and is required to choose one itself using find_free_devnm() it does NOT use create_named_array(). On kernels with CONFIG_BLOCK_LEGACY_AUTOLOAD not set, this can result in failure to assemble an array. This can particularly seen when the "name" of the array begins with a host name different to the name of the host running the command. So add the missing call to create_named_array(). Link: https://bugzilla.kernel.org/show_bug.cgi?id=217074 Signed-off-by: NeilBrown <neilb@xxxxxxx> --- mdopen.c | 1 + 1 file changed, 1 insertion(+) diff --git a/mdopen.c b/mdopen.c index d18c931996d2..810f79a3d19a 100644 --- a/mdopen.c +++ b/mdopen.c @@ -370,6 +370,7 @@ int create_mddev(char *dev, char *name, int autof, int trustworthy, } if (block_udev) udev_block(devnm); + create_named_array(devnm); } sprintf(devname, "/dev/%s", devnm); -- 2.39.2
