[PATCH 2/2] btrfs-progs: tests: Add test for fi show

[Nikolay Borisov <nborisov@suse.com>]

Add a test to ensure that 'btrfs fi show' on a mounted filesyste, which
has a missing device will explicitly print which device is missing.

Signed-off-by: Nikolay Borisov <nborisov@suse.com>
---
 tests/cli-tests/016-fi-show-missing/test.sh | 35 +++++++++++++++++++++
 1 file changed, 35 insertions(+)
 create mode 100755 tests/cli-tests/016-fi-show-missing/test.sh

diff --git a/tests/cli-tests/016-fi-show-missing/test.sh b/tests/cli-tests/016-fi-show-missing/test.sh
new file mode 100755
index 000000000000..e24a85d05410
--- /dev/null
+++ b/tests/cli-tests/016-fi-show-missing/test.sh
@@ -0,0 +1,35 @@
+#!/bin/bash
+#
+# Test that if a device is missing for a mounted filesystem, btrfs fi show will
+# show which device exactly is missing.
+
+source "$TEST_TOP/common"
+
+check_prereq mkfs.btrfs
+check_prereq btrfs
+
+setup_root_helper
+setup_loopdevs 2
+prepare_loopdevs
+
+dev1=${loopdevs[1]}
+dev2=${loopdevs[2]}
+
+run_check $SUDO_HELPER "$TOP"/mkfs.btrfs -f -draid1 $dev1 $dev2
+# move the device, changing its path, simulating the device being missing
+mv $dev2 /dev/loop-non-existent
+
+run_check $SUDO_HELPER mount -o degraded $dev1 $TEST_MNT
+
+if ! run_check_stdout $SUDO_HELPER "$TOP"/btrfs fi show $TEST_MNT | \
+	grep -q "$dev2 MISSING"; then
+
+	_fail "Didn't find exact missing device"
+fi
+
+mv /dev/loop-non-existent $dev2
+
+run_check $SUDO_HELPER umount $TEST_MNT
+
+cleanup_loopdevs
+
-- 
2.17.1