dm thin: log info when growing the data or metadata device

Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Acked-by: Joe Thornber <ejt@redhat.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/drivers/md/dm-thin.c b/drivers/md/dm-thin.c
index 35d2e41ef82f..234696009d7b 100644
--- a/drivers/md/dm-thin.c
+++ b/drivers/md/dm-thin.c
@@ -2216,6 +2216,10 @@ static int maybe_resize_data_dev(struct dm_target *ti, bool *need_commit)
                 return -EINVAL;
 
         } else if (data_size > sb_data_size) {
+                if (sb_data_size)
+                        DMINFO("%s: growing the data device from %llu to %llu blocks",
+                               dm_device_name(pool->pool_md),
+                               sb_data_size, (unsigned long long)data_size);
                 r = dm_pool_resize_data_dev(pool->pmd, data_size);
                 if (r) {
                         metadata_operation_failed(pool, "dm_pool_resize_data_dev", r);
@@ -2253,6 +2257,9 @@ static int maybe_resize_metadata_dev(struct dm_target *ti, bool *need_commit)
                 return -EINVAL;
 
         } else if (metadata_dev_size > sb_metadata_dev_size) {
+                DMINFO("%s: growing the metadata device from %llu to %llu blocks",
+                       dm_device_name(pool->pool_md),
+                       sb_metadata_dev_size, metadata_dev_size);
                 r = dm_pool_resize_metadata_dev(pool->pmd, metadata_dev_size);
                 if (r) {
                         metadata_operation_failed(pool, "dm_pool_resize_metadata_dev", r);