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[ndctl,v2,24/26] ndctl/test: Regression test 'failed to track'

Message ID 156426368860.531577.4971154560351562053.stgit@dwillia2-desk3.amr.corp.intel.com (mailing list archive)
State Superseded
Headers show
Series Improvements for namespace creation/interrogation | expand

Commit Message

Dan Williams July 27, 2019, 9:41 p.m. UTC 
Exercise the failing condition behind kernel commit c4703ce11c23
"libnvdimm/namespace: Fix label tracking error", i.e. rename (change
uuid) allocated namespace capacity.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
---
 test/Makefile.am   |    3 ++-
 test/track-uuid.sh |   41 +++++++++++++++++++++++++++++++++++++++++
 2 files changed, 43 insertions(+), 1 deletion(-)
 create mode 100755 test/track-uuid.sh
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Patch

diff --git a/test/Makefile.am b/test/Makefile.am
index decc8377258a..782b01cc4a97 100644
--- a/test/Makefile.am
+++ b/test/Makefile.am
@@ -25,7 +25,8 @@  TESTS =\
 	inject-smart.sh \
 	monitor.sh \
 	max_available_extent_ns.sh \
-	pfn-meta-errors.sh
+	pfn-meta-errors.sh \
+	track-uuid.sh
 
 check_PROGRAMS =\
 	libndctl \
diff --git a/test/track-uuid.sh b/test/track-uuid.sh
new file mode 100755
index 000000000000..ece11193f01d
--- /dev/null
+++ b/test/track-uuid.sh
@@ -0,0 +1,41 @@ 
+#!/bin/bash -Ex
+
+# SPDX-License-Identifier: GPL-2.0
+# Copyright(c) 2018 Intel Corporation. All rights reserved.
+
+blockdev=""
+rc=77
+
+. ./common
+
+set -e
+trap 'err $LINENO' ERR
+
+# setup (reset nfit_test dimms)
+modprobe nfit_test
+$NDCTL disable-region -b $NFIT_TEST_BUS0 all
+$NDCTL zero-labels -b $NFIT_TEST_BUS0 all
+$NDCTL enable-region -b $NFIT_TEST_BUS0 all
+
+rc=1
+
+# create a fsdax namespace and clear errors (if any)
+dev="x"
+json=$($NDCTL create-namespace -b $NFIT_TEST_BUS0 -t pmem -m raw)
+eval "$(echo "$json" | json2var)"
+[ $dev = "x" ] && echo "fail: $LINENO" && exit 1
+
+$NDCTL disable-namespace $dev
+# On broken kernels this reassignment of capacity triggers a warning
+# with the following signature, and results in ENXIO.
+#     WARNING: CPU: 11 PID: 1378 at drivers/nvdimm/label.c:721 __pmem_label_update+0x55d/0x570 [libnvdimm]
+#     Call Trace:
+#      nd_pmem_namespace_label_update+0xd6/0x160 [libnvdimm]
+#      uuid_store+0x15c/0x170 [libnvdimm]
+#      kernfs_fop_write+0xf0/0x1a0
+#      __vfs_write+0x26/0x150
+uuidgen > /sys/bus/nd/devices/$dev/uuid
+$NDCTL enable-namespace $dev
+
+_cleanup
+exit 0