drbd: fix check for too large lower level device
To check wether we are truncating a very large device due to limited
meta data space, we need to check the ll_dev size.
Also improve the printk to suggest "flexible" or "internal".
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
diff --git a/drivers/block/drbd/drbd_nl.c b/drivers/block/drbd/drbd_nl.c
index 22538d9..e2a5875 100644
--- a/drivers/block/drbd/drbd_nl.c
+++ b/drivers/block/drbd/drbd_nl.c
@@ -894,11 +894,6 @@
min_md_device_sectors = MD_RESERVED_SECT * (nbc->dc.meta_dev_idx + 1);
}
- if (drbd_get_capacity(nbc->md_bdev) > max_possible_sectors)
- dev_warn(DEV, "truncating very big lower level device "
- "to currently maximum possible %llu sectors\n",
- (unsigned long long) max_possible_sectors);
-
if (drbd_get_capacity(nbc->md_bdev) < min_md_device_sectors) {
retcode = ERR_MD_DISK_TO_SMALL;
dev_warn(DEV, "refusing attach: md-device too small, "
@@ -917,6 +912,15 @@
nbc->known_size = drbd_get_capacity(nbc->backing_bdev);
+ if (nbc->known_size > max_possible_sectors) {
+ dev_warn(DEV, "==> truncating very big lower level device "
+ "to currently maximum possible %llu sectors <==\n",
+ (unsigned long long) max_possible_sectors);
+ if (nbc->dc.meta_dev_idx >= 0)
+ dev_warn(DEV, "==>> using internal or flexible "
+ "meta data may help <<==\n");
+ }
+
drbd_suspend_io(mdev);
/* also wait for the last barrier ack. */
wait_event(mdev->misc_wait, !atomic_read(&mdev->ap_pending_cnt));