[PATCH 002 of 5] md: 'sync_action' in sysfs returns wrong value for readonly arrays

NeilBrown
2007-10-15T04:35:34Z

When an array is started read-only, MD_RECOVERY_NEEDED can be set but
no recovery will be running. This causes 'sync_action' to report the
wrong value.

We could remove the test for MD_RECOVERY_NEEDED, but doing so would
leave a small gap after requesting a sync action, where 'sync_action'
would still report the old value.

So make sure that for a read-only array, 'sync_action' always returns 'idle'.

Signed-off-by: Neil Brown <neilb@suse.de>

### Diffstat output
./drivers/md/md.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff .prev/drivers/md/md.c ./drivers/md/md.c
--- .prev/drivers/md/md.c 2007-10-15 14:06:32.000000000 +1000
+++ ./drivers/md/md.c 2007-10-15 14:06:32.000000000 +1000
@@ -2714,7 +2714,7 @@ action_show(mddev_t *mddev, char *page)
{
char *type = "idle";
if (test_bit(MD_RECOVERY_RUNNING, &mddev->recovery) ||
- test_bit(MD_RECOVERY_NEEDED, &mddev->recovery)) {
+ (!mddev->ro && test_bit(MD_RECOVERY_NEEDED, &mddev->recovery))) {
if (test_bit(MD_RECOVERY_RESHAPE, &mddev->recovery))
type = "reshape";
else if (test_bit(MD_RECOVERY_SYNC, &mddev->recovery)) {