The status function prints various statistics about a deduplication
target instance.
Signed-off-by: Vasily Tarasov <tarasov@xxxxxxxxxxx>
---
drivers/md/dm-dedup-target.c | 34 ++++++++++++++++++++++++++++++++++
1 files changed, 34 insertions(+), 0 deletions(-)
diff --git a/drivers/md/dm-dedup-target.c b/drivers/md/dm-dedup-target.c
index 0887543..699af96 100644
--- a/drivers/md/dm-dedup-target.c
+++ b/drivers/md/dm-dedup-target.c
@@ -744,6 +744,39 @@ static void dm_dedup_dtr_fn(struct dm_target *ti)
kfree(dc);
}
+static void dm_dedup_status_fn(struct dm_target *ti, status_type_t status_type,
+ unsigned status_flags, char *result, unsigned maxlen)
+{
+ struct dedup_config *dc = ti->private;
+ uint64_t data_total_block_count;
+ uint64_t data_used_block_count;
+ uint64_t data_free_block_count;
+ uint64_t data_actual_block_count;
+ int sz = 0;
+
+ switch (status_type) {
+ case STATUSTYPE_INFO:
+ case STATUSTYPE_TABLE:
+ data_used_block_count = dc->physical_block_counter;
+ data_actual_block_count = dc->logical_block_counter;
+ data_total_block_count = dc->pblocks;
+
+ data_free_block_count =
+ data_total_block_count - data_used_block_count;
+
+ DMEMIT("%llu %llu %llu %llu ",
+ data_total_block_count, data_free_block_count,
+ data_used_block_count, data_actual_block_count);
+
+ DMEMIT("%u %s %s ", dc->block_size,
+ dc->data_dev->name, dc->metadata_dev->name);
+
+ DMEMIT("%llu %llu %llu %llu %llu %llu",
+ dc->writes, dc->uniqwrites, dc->dupwrites,
+ dc->reads_on_writes, dc->overwrites, dc->newwrites);
+ }
+}
+
static int mark_lbn_pbn_bitmap(void *key, int32_t ksize,
void *value, int32_t vsize, void *data)
{
@@ -885,6 +918,7 @@ static struct target_type dm_dedup_target = {
.map = dm_dedup_map_fn,
.end_io = dm_dedup_endio_fn,
.message = dm_dedup_message_fn,
+ .status = dm_dedup_status_fn,
};
static int __init dm_dedup_init(void)
--
1.7.1
--
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