From: Zhang Yi <yi.zhang@xxxxxxxxxx>
Test block device unmap write zeroes sysfs interface with NVMeT devices
which are based on various SCSI debug devices. The NVMe device's
/sys/block/<disk>/queue/write_zeroes_unmap_max_hw_bytes
should equal to the write_zeroes_max_bytes if the SCSI debug device
enable the WRITE SAME command with unmap functionality, and it should
return 0 otherwise. /sys/block/<disk>/queue/write_zeroes_unmap_max_bytes
should be equal to write_zeroes_unmap_max_hw_bytes by default, and we
can disable write zeroes support by setting it to zero.
Signed-off-by: Zhang Yi <yi.zhang@xxxxxxxxxx>
---
tests/nvme/065 | 96 ++++++++++++++++++++++++++++++++++++++++++++++
tests/nvme/065.out | 4 ++
2 files changed, 100 insertions(+)
create mode 100755 tests/nvme/065
create mode 100644 tests/nvme/065.out
diff --git a/tests/nvme/065 b/tests/nvme/065
new file mode 100755
index 0000000..8631bfa
--- /dev/null
+++ b/tests/nvme/065
@@ -0,0 +1,96 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-3.0+
+# Copyright (C) 2025 Huawei.
+#
+# Test block device unmap write zeroes sysfs interface with nvmet scsi
+# debug devices.
+
+. tests/nvme/rc
+. common/scsi_debug
+
+DESCRIPTION="test unmap write zeroes sysfs interface with nvmet devices"
+QUICK=1
+
+nvme_trtype=loop
+nvmet_blkdev_type="device"
+
+requires() {
+ _have_scsi_debug
+ _nvme_requires
+ _require_nvme_trtype_is_loop
+}
+
+readonly TO_SKIP=255
+
+setup_test_device() {
+ local port
+
+ if ! _configure_scsi_debug "$@"; then
+ return 1
+ fi
+
+ if [[ ! -f /sys/block/${SCSI_DEBUG_DEVICES[0]}/queue/write_zeroes_unmap_max_hw_bytes ]]; then
+ _exit_scsi_debug
+ return $TO_SKIP
+ fi
+
+ port="$(_create_nvmet_port)"
+ _create_nvmet_subsystem --blkdev "/dev/${SCSI_DEBUG_DEVICES[0]}"
+ _add_nvmet_subsys_to_port "${port}" "${def_subsysnqn}"
+
+ _create_nvmet_host "${def_subsysnqn}" "${def_hostnqn}"
+ _nvme_connect_subsys
+
+ echo $(_find_nvme_ns "${def_subsys_uuid}")
+}
+
+cleanup_test_device() {
+ _nvme_disconnect_subsys
+ _nvmet_target_cleanup --subsysnqn "${def_subsysnqn}"
+ _exit_scsi_debug
+}
+
+test() {
+ echo "Running ${TEST_NAME}"
+
+ _setup_nvmet
+
+ # disable WRITE SAME with unmap
+ local dname
+ dname=$(setup_test_device lbprz=0)
+ ret=$?
+ if ((ret)); then
+ if ((ret == TO_SKIP)); then
+ SKIP_REASONS+=("kernel does not support unmap write zeroes sysfs interface")
+ fi
+ return 1
+ fi
+
+ umap_hw_bytes="$(cat "/sys/block/$dname/queue/write_zeroes_unmap_max_hw_bytes")"
+ umap_bytes="$(cat "/sys/block/$dname/queue/write_zeroes_unmap_max_bytes")"
+ if [[ $umap_hw_bytes -ne 0 || $umap_bytes -ne 0 ]]; then
+ echo "Test disable WRITE SAME with unmap failed."
+ fi
+ cleanup_test_device
+
+ # enable WRITE SAME with unmap
+ if ! dname=$(setup_test_device lbprz=1 lbpws=1); then
+ return 1
+ fi
+
+ zero_bytes="$(cat "/sys/block/$dname/queue/write_zeroes_max_bytes")"
+ umap_hw_bytes="$(cat "/sys/block/$dname/queue/write_zeroes_unmap_max_hw_bytes")"
+ umap_bytes="$(cat "/sys/block/$dname/queue/write_zeroes_unmap_max_bytes")"
+ if [[ $umap_hw_bytes -ne $zero_bytes || $umap_bytes -ne $zero_bytes ]]; then
+ echo "Test enable WRITE SAME with unmap failed."
+ fi
+
+ echo 0 > "/sys/block/$dname/queue/write_zeroes_unmap_max_bytes"
+ umap_bytes="$(cat "/sys/block/$dname/queue/write_zeroes_unmap_max_bytes")"
+ if [[ $umap_bytes -ne 0 ]]; then
+ echo "Test manually disable WRITE SAME with unmap failed."
+ fi
+ cleanup_test_device
+
+ echo "Test complete"
+}
diff --git a/tests/nvme/065.out b/tests/nvme/065.out
new file mode 100644
index 0000000..262cfc9
--- /dev/null
+++ b/tests/nvme/065.out
@@ -0,0 +1,4 @@
+Running nvme/065
+disconnected 1 controller(s)
+disconnected 1 controller(s)
+Test complete
--
2.39.2
