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 <[email protected]> --- test/Makefile.am | 3 ++- test/track-uuid.sh | 41 +++++++++++++++++++++++++++++++++++++++++ 2 files changed, 43 insertions(+), 1 deletion(-) create mode 100755 test/track-uuid.sh 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 _______________________________________________ Linux-nvdimm mailing list [email protected] https://lists.01.org/mailman/listinfo/linux-nvdimm
