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authorMike Snitzer <snitzer@redhat.com>2012-12-21 20:23:32 +0000
committerAlasdair G Kergon <agk@redhat.com>2012-12-21 20:23:32 +0000
commit018debea8de9b8f17a9637e07c98c61517eb2a6b (patch)
tree80fa9a7e9b79e09e31081db699d1ad449cb7f46a
parente3cbf94513c21516fbb44561857b155d1c599625 (diff)
downloadlinux-stericsson-018debea8de9b8f17a9637e07c98c61517eb2a6b.tar.gz
dm thin: emit ignore_discard in status when discards disabled
If "ignore_discard" is specified when creating the thin pool device then discard support is disabled for that device. The pool device's status should reflect this fact rather than stating "no_discard_passdown" (which implies discards are enabled but passdown is disabled). Reported-by: Zdenek Kabelac <zkabelac@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
-rw-r--r--drivers/md/dm-thin.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/md/dm-thin.c b/drivers/md/dm-thin.c
index aeb9e20f5978..063fe04e60e9 100644
--- a/drivers/md/dm-thin.c
+++ b/drivers/md/dm-thin.c
@@ -2391,7 +2391,9 @@ static int pool_status(struct dm_target *ti, status_type_t type,
else
DMEMIT("rw ");
- if (pool->pf.discard_enabled && pool->pf.discard_passdown)
+ if (!pool->pf.discard_enabled)
+ DMEMIT("ignore_discard");
+ else if (pool->pf.discard_passdown)
DMEMIT("discard_passdown");
else
DMEMIT("no_discard_passdown");
@@ -2487,7 +2489,7 @@ static struct target_type pool_target = {
.name = "thin-pool",
.features = DM_TARGET_SINGLETON | DM_TARGET_ALWAYS_WRITEABLE |
DM_TARGET_IMMUTABLE,
- .version = {1, 5, 0},
+ .version = {1, 6, 0},
.module = THIS_MODULE,
.ctr = pool_ctr,
.dtr = pool_dtr,