1 files changed, 18 insertions, 7 deletions

diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c
index aa60526075d7..c90e662d2802 100644
--- a/drivers/md/dm-table.c
+++ b/drivers/md/dm-table.c
@@ -360,8 +360,12 @@ static int device_area_is_invalid(struct dm_target *ti, struct dm_dev *dev,
                 return 0;
 
         if ((start >= dev_size) || (start + len > dev_size)) {
-                DMWARN("%s: %s too small for target",
-                       dm_device_name(ti->table->md), bdevname(bdev, b));
+                DMWARN("%s: %s too small for target: "
+                       "start=%llu, len=%llu, dev_size=%llu",
+                       dm_device_name(ti->table->md), bdevname(bdev, b),
+                       (unsigned long long)start,
+                       (unsigned long long)len,
+                       (unsigned long long)dev_size);
                 return 1;
         }
 
@@ -370,7 +374,7 @@ static int device_area_is_invalid(struct dm_target *ti, struct dm_dev *dev,
 
         if (start & (logical_block_size_sectors - 1)) {
                 DMWARN("%s: start=%llu not aligned to h/w "
-                       "logical block size %hu of %s",
+                       "logical block size %u of %s",
                        dm_device_name(ti->table->md),
                        (unsigned long long)start,
                        limits->logical_block_size, bdevname(bdev, b));
@@ -379,7 +383,7 @@ static int device_area_is_invalid(struct dm_target *ti, struct dm_dev *dev,
 
         if (len & (logical_block_size_sectors - 1)) {
                 DMWARN("%s: len=%llu not aligned to h/w "
-                       "logical block size %hu of %s",
+                       "logical block size %u of %s",
                        dm_device_name(ti->table->md),
                        (unsigned long long)len,
                        limits->logical_block_size, bdevname(bdev, b));
@@ -496,8 +500,15 @@ int dm_set_device_limits(struct dm_target *ti, struct dm_dev *dev,
         }
 
         if (blk_stack_limits(limits, &q->limits, start << 9) < 0)
-                DMWARN("%s: target device %s is misaligned",
-                       dm_device_name(ti->table->md), bdevname(bdev, b));
+                DMWARN("%s: target device %s is misaligned: "
+                       "physical_block_size=%u, logical_block_size=%u, "
+                       "alignment_offset=%u, start=%llu",
+                       dm_device_name(ti->table->md), bdevname(bdev, b),
+                       q->limits.physical_block_size,
+                       q->limits.logical_block_size,
+                       q->limits.alignment_offset,
+                       (unsigned long long) start << 9);
+
 
         /*
          * Check if merge fn is supported.
@@ -698,7 +709,7 @@ static int validate_hardware_logical_block_alignment(struct dm_table *table,
 
         if (remaining) {
                 DMWARN("%s: table line %u (start sect %llu len %llu) "
-                       "not aligned to h/w logical block size %hu",
+                       "not aligned to h/w logical block size %u",
                        dm_device_name(table->md), i,
                        (unsigned long long) ti->begin,
                        (unsigned long long) ti->len,