[PATCH v2] nvme: test out-of-range I/O access (file backend)

[osandov@osandov.com (Omar Sandoval)]

On Mon, Mar 11, 2019@03:18:55PM -0700, Sagi Grimberg wrote:
> Test that we correctly fail an out-of-range access
> with a proper NVMe status code.
> 
> Signed-off-by: Sagi Grimberg <sagi at grimberg.me>
> ---
> Changes from v1:
> - "ERROR:" prefix to err message
> - document that we are testing file backend

Ah, so this fails for me because I have nvme-cli 1.7 which is missing
your 9c891c139894 ("nvmet: check fileio lba range access boundaries").
How about we just look at the exit code of nvme read instead of relying
on that output?

diff --git a/tests/nvme/018 b/tests/nvme/018
index 30140ae..b09c29c 100755
--- a/tests/nvme/018
+++ b/tests/nvme/018
@@ -2,7 +2,8 @@
 # SPDX-License-Identifier: GPL-3.0+
 # Copyright (C) 2018 Sagi Grimberg
 #
-# Test NVMe out of range access on a file backend
+# Test NVMe out of range access on a file backend. Regression test for commit
+# 9c891c139894 ("nvmet: check fileio lba range access boundaries").
 
 . tests/nvme/rc
 
@@ -38,11 +39,12 @@ test() {
 	cat "/sys/block/${nvmedev}n1/uuid"
 	cat "/sys/block/${nvmedev}n1/wwid"
 
-	sectors=$(blockdev --getsz /dev/${nvmedev}n1)
-	bs=$(blockdev --getbsz /dev/${nvmedev}n1)
+	local sectors
+	local bs
+	sectors="$(blockdev --getsz "/dev/${nvmedev}n1")"
+	bs="$(blockdev --getbsz "/dev/${nvmedev}n1")"
 
-	nvme read "/dev/${nvmedev}n1" -s $sectors -c 0 -z $bs
-	if [[ ! $? ]]; then
+	if nvme read "/dev/${nvmedev}n1" -s "$sectors" -c 0 -z "$bs"; then
 		echo "ERROR: Successfully read out of device lba range"
 	fi
 
diff --git a/tests/nvme/018.out b/tests/nvme/018.out
old mode 100755
new mode 100644
index 0ab3b2a..68a0194
--- a/tests/nvme/018.out
+++ b/tests/nvme/018.out
@@ -1,6 +1,5 @@
 Running nvme/018
 91fdba0d-f87b-4c25-b80f-db7be1418b9e
 uuid.91fdba0d-f87b-4c25-b80f-db7be1418b9e
-read:CAP_EXCEEDED: The execution of the command has caused the capacity of the namespace to be exceeded(6081)
 NQN:blktests-subsystem-1 disconnected 1 controller(s)
 Test complete