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Subject[PATCH - mdadm] mdopen: always try create_named_array()
Date

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@suse.de>
---
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
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