From 5ef56c8fecedf403a346d02140e52a072d693d6b Mon Sep 17 00:00:00 2001 From: NeilBrown Date: Thu, 25 Aug 2011 14:42:51 +1000 Subject: [PATCH] md: report failure if a 'set faulty' request doesn't. Sometimes a device will refuse to be set faulty. e.g. RAID1 will never let the last working device become faulty. So check if "md_error()" did manage to set the faulty flag and fail with EBUSY if it didn't. Resolves-Debian-Bug: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=601198 Reported-by: Mike Hommey Signed-off-by: NeilBrown --- drivers/md/md.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/md/md.c b/drivers/md/md.c index 8e221a20f5d9..1cd9bfb45e9a 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -2561,7 +2561,10 @@ state_store(mdk_rdev_t *rdev, const char *buf, size_t len) int err = -EINVAL; if (cmd_match(buf, "faulty") && rdev->mddev->pers) { md_error(rdev->mddev, rdev); - err = 0; + if (test_bit(Faulty, &rdev->flags)) + err = 0; + else + err = -EBUSY; } else if (cmd_match(buf, "remove")) { if (rdev->raid_disk >= 0) err = -EBUSY; @@ -5983,6 +5986,8 @@ static int set_disk_faulty(mddev_t *mddev, dev_t dev) return -ENODEV; md_error(mddev, rdev); + if (!test_bit(Faulty, &rdev->flags)) + return -EBUSY; return 0; } -- 2.20.1