From a17184a911195c274104df98a79bec10f57e735d Mon Sep 17 00:00:00 2001 From: NeilBrown Date: Wed, 6 Feb 2008 01:39:55 -0800 Subject: [PATCH] md: allow an md array to appear with 0 drives if it has external metadata Signed-off-by: Neil Brown Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/md/md.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/md/md.c b/drivers/md/md.c index 39757566f39..08e0f8d672c 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -4647,9 +4647,10 @@ static int md_ioctl(struct inode *inode, struct file *file, */ /* if we are not initialised yet, only ADD_NEW_DISK, STOP_ARRAY, * RUN_ARRAY, and GET_ and SET_BITMAP_FILE are allowed */ - if (!mddev->raid_disks && cmd != ADD_NEW_DISK && cmd != STOP_ARRAY - && cmd != RUN_ARRAY && cmd != SET_BITMAP_FILE - && cmd != GET_BITMAP_FILE) { + if ((!mddev->raid_disks && !mddev->external) + && cmd != ADD_NEW_DISK && cmd != STOP_ARRAY + && cmd != RUN_ARRAY && cmd != SET_BITMAP_FILE + && cmd != GET_BITMAP_FILE) { err = -ENODEV; goto abort_unlock; } -- 2.41.1