On Mon, 20 Mar 2023, Jes Sorensen wrote:

On 3/13/23 20:06, NeilBrown wrote:

quoted

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 <redacted>

Applied!

Thanks.

Do you have plans for releasing 4.3?  I'd like this patch to be in a
numbered release for at least a few months before we change the kernel
Kconfig to allow md to be built without CONFIG_BLOCK_LEGACY_AUTOLOAD.

Thanks,
NeilBrown