From a337cc58cdee1d0443744eef2a43d86738b3124d Mon Sep 17 00:00:00 2001
From: Ilya Dryomov <idryomov@gmail.com>
Date: Mon, 18 Mar 2019 20:06:20 +0100
Subject: [PATCH] qa: add krbd_discard_granularity.t test

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
---
 qa/rbd/krbd_discard_granularity.t            | 40 ++++++++++++++++++++
 qa/suites/krbd/basic/tasks/krbd_discard.yaml |  1 +
 2 files changed, 41 insertions(+)
 create mode 100644 qa/rbd/krbd_discard_granularity.t

diff --git a/qa/rbd/krbd_discard_granularity.t b/qa/rbd/krbd_discard_granularity.t
new file mode 100644
index 00000000000..844643baedb
--- /dev/null
+++ b/qa/rbd/krbd_discard_granularity.t
@@ -0,0 +1,40 @@
+
+  $ rbd create --size 20M img
+
+  $ DEV=$(sudo rbd map img)
+  $ blockdev --getiomin $DEV
+  65536
+  $ blockdev --getioopt $DEV
+  65536
+  $ cat /sys/block/${DEV#/dev/}/queue/discard_granularity
+  65536
+  $ sudo rbd unmap $DEV
+
+  $ DEV=$(sudo rbd map -o alloc_size=512 img)
+  $ blockdev --getiomin $DEV
+  512
+  $ blockdev --getioopt $DEV
+  512
+  $ cat /sys/block/${DEV#/dev/}/queue/discard_granularity
+  512
+  $ sudo rbd unmap $DEV
+
+  $ DEV=$(sudo rbd map -o alloc_size=4194304 img)
+  $ blockdev --getiomin $DEV
+  4194304
+  $ blockdev --getioopt $DEV
+  4194304
+  $ cat /sys/block/${DEV#/dev/}/queue/discard_granularity
+  4194304
+  $ sudo rbd unmap $DEV
+
+  $ DEV=$(sudo rbd map -o alloc_size=8388608 img)
+  $ blockdev --getiomin $DEV
+  4194304
+  $ blockdev --getioopt $DEV
+  4194304
+  $ cat /sys/block/${DEV#/dev/}/queue/discard_granularity
+  4194304
+  $ sudo rbd unmap $DEV
+
+  $ rbd rm --no-progress img
diff --git a/qa/suites/krbd/basic/tasks/krbd_discard.yaml b/qa/suites/krbd/basic/tasks/krbd_discard.yaml
index 869bef00ae3..59ec5b943cf 100644
--- a/qa/suites/krbd/basic/tasks/krbd_discard.yaml
+++ b/qa/suites/krbd/basic/tasks/krbd_discard.yaml
@@ -6,3 +6,4 @@ tasks:
       - qa/rbd/krbd_discard_512b.t
       - qa/rbd/krbd_discard_4M.t
       - qa/rbd/krbd_zeroout.t
+      - qa/rbd/krbd_discard_granularity.t