From: NeilBrown When a raid1 array is stopped, all components currently get added to the list for auto-detection. However we should really only add components that were found by autodetection in the first place. So add a flag to record that information, and use it. Signed-off-by: Neil Brown Signed-off-by: Andrew Morton --- drivers/md/md.c | 4 +++- include/linux/raid/md_k.h | 1 + 2 files changed, 4 insertions(+), 1 deletion(-) diff -puN drivers/md/md.c~md-clean-up-irregularity-with-raid-autodetect drivers/md/md.c --- a/drivers/md/md.c~md-clean-up-irregularity-with-raid-autodetect +++ a/drivers/md/md.c @@ -1503,7 +1503,8 @@ static void export_rdev(mdk_rdev_t * rde free_disk_sb(rdev); list_del_init(&rdev->same_set); #ifndef MODULE - md_autodetect_dev(rdev->bdev->bd_dev); + if (test_bit(AutoDetected, &rdev->flags)) + md_autodetect_dev(rdev->bdev->bd_dev); #endif unlock_rdev(rdev); kobject_put(&rdev->kobj); @@ -6025,6 +6026,7 @@ static void autostart_arrays(int part) MD_BUG(); continue; } + set_bit(AutoDetected, &rdev->flags); list_add(&rdev->same_set, &pending_raid_disks); i_passed++; } diff -puN include/linux/raid/md_k.h~md-clean-up-irregularity-with-raid-autodetect include/linux/raid/md_k.h --- a/include/linux/raid/md_k.h~md-clean-up-irregularity-with-raid-autodetect +++ a/include/linux/raid/md_k.h @@ -83,6 +83,7 @@ struct mdk_rdev_s #define BarriersNotsupp 5 /* BIO_RW_BARRIER is not supported */ #define AllReserved 6 /* If whole device is reserved for * one array */ +#define AutoDetected 7 /* added by auto-detect */ int desc_nr; /* descriptor index in the superblock */ int raid_disk; /* role of device in array */ _