Commit 018debea authored by Mike Snitzer's avatar Mike Snitzer Committed by Alasdair G Kergon
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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: default avatarZdenek Kabelac <zkabelac@redhat.com>
Signed-off-by: default avatarMike Snitzer <snitzer@redhat.com>
Signed-off-by: default avatarAlasdair G Kergon <agk@redhat.com>
parent e3cbf945

drivers/md/dm-thin.c

+4 −2
Original line number Diff line number Diff line
@@ -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,

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