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dm mpath: return parameter error

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Return a specific error message if there are an invalid number of multipath
arguments.

This invalid command returns an "Unknown error" because the ti->error field is
not set

dmsetup create --table '0 2 multipath 0 0 1 1 round-robin 0 1 1 /dev/sdh' mpath0

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
This commit is contained in:
Mikulas Patocka 2008-07-21 12:00:30 +01:00 committed by Alasdair G Kergon
parent 6ae2fa6718
commit 148acff615
1 changed files with 3 additions and 1 deletions
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4
drivers/md/dm-mpath.c
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@ -625,8 +625,10 @@ static struct priority_group *parse_priority_group(struct arg_set *as,
struct pgpath *pgpath;
struct arg_set path_args;
if (as->argc < nr_params)
if (as->argc < nr_params) {
ti->error = "not enough path parameters";
goto bad;
}
path_args.argc = nr_params;
path_args.argv = as->argv;