From 2c2263c93f70c6abdce90ad96a854760532aa52f Mon Sep 17 00:00:00 2001
From: Heinz Mauelshagen <heinzm@redhat.com>
Date: Mon, 14 Oct 2013 17:14:45 +0200
Subject: [PATCH] dm cache: log error message if dm_kcopyd_copy() fails
A migration failure should be logged (albeit limited).
Signed-off-by: Heinz Mauelshagen <heinzm@redhat.com>
Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
---
drivers/md/dm-cache-target.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/md/dm-cache-target.c b/drivers/md/dm-cache-target.c
index dc63eb2aa69c5..05a10c02043f2 100644
--- a/drivers/md/dm-cache-target.c
+++ b/drivers/md/dm-cache-target.c
@@ -886,8 +886,10 @@ static void issue_copy_real(struct dm_cache_migration *mg)
r = dm_kcopyd_copy(cache->copier, &o_region, 1, &c_region, 0, copy_complete, mg);
}
- if (r < 0)
+ if (r < 0) {
+ DMERR_LIMIT("issuing migration failed");
migration_failure(mg);
+ }
}
static void avoid_copy(struct dm_cache_migration *mg)
--
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