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|
#!/bin/bash -x
# SPDX-License-Identifier: GPL-2.0
# Copyright (C) 2015-2020 Intel Corporation. All rights reserved.
. $(dirname $0)/common
rc=77
cleanup() {
echo "align.sh: failed at line $1"
if [ "x$region" != "x" -a x$save_align != "x" ]; then
echo $save_align > $region_path/align
fi
if [ "x$ns1" != "x" ]; then
$NDCTL destroy-namespace -f $ns1
fi
if [ "x$ns2" != "x" ]; then
$NDCTL destroy-namespace -f $ns2
fi
exit $rc
}
is_aligned() {
val=$1
align=$2
if [ $((val & (align - 1))) -eq 0 ]; then
return 0
fi
return 1
}
set -e
trap 'err $LINENO cleanup' ERR
find_region()
{
$NDCTL list -R -b ACPI.NFIT | jq -r '[.[] | select(.available_size == .size)][0] | .dev'
}
region=$(find_region)
if [ "x$region" = "xnull" ]; then
# this is destructive
$NDCTL disable-region -b ACPI.NFIT all
$NDCTL init-labels -f -b ACPI.NFIT all
$NDCTL enable-region -b ACPI.NFIT all
fi
region=$(find_region)
if [ "x$region" = "xnull" ]; then
unset $region
echo "unable to find empty region"
false
fi
region_path="/sys/bus/nd/devices/$region"
save_align=$(cat $region_path/align)
# check that the region is 1G aligned
resource=$(cat $region_path/resource)
is_aligned $resource $((1 << 30)) || (echo "need a 1GB aligned namespace to test alignment conditions" && false)
rc=1
# check that start-aligned, but end-misaligned namespaces can be created
# and probed
echo 4096 > $region_path/align
SIZE=$(((1<<30) + (8<<10)))
json=$($NDCTL create-namespace -r $region -s $SIZE -m fsdax -a 4K)
eval $(json2var <<< "$json")
$NDCTL disable-namespace $dev
$NDCTL enable-namespace $dev
ns1=$dev
# check that start-misaligned namespaces can't be created until the
# region alignment is set to a compatible value.
# Note the namespace capacity alignment requirement in this case is
# SUBSECTION_SIZE (2M) as the data alignment can be satisfied with
# metadata padding.
json=$($NDCTL create-namespace -r $region -s $SIZE -m fsdax -a 4K -f) || status="failed"
if [ $status != "failed" ]; then
echo "expected namespace creation failure"
eval $(json2var <<< "$json")
$NDCTL destroy-namespace -f $dev
false
fi
# check that start-misaligned namespaces can't be probed. Since the
# kernel does not support creating this misalignment, force it with a
# custom info-block
json=$($NDCTL create-namespace -r $region -s $SIZE -m raw)
eval $(json2var <<< "$json")
$NDCTL disable-namespace $dev
$NDCTL write-infoblock $dev -a 4K
$NDCTL enable-namespace $dev || status="failed"
if [ $status != "failed" ]; then
echo "expected namespace enable failure"
$NDCTL destroy-namespace -f $dev
false
fi
ns2=$dev
# check that namespace with proper inner padding can be enabled, even
# though non-zero start_pad namespaces don't support dax
$NDCTL write-infoblock $ns2 -a 4K -O 8K
$NDCTL enable-namespace $ns2
$NDCTL destroy-namespace $ns2 -f
unset ns2
# check that all namespace alignments can be created with the region
# alignment at a compatible value
SIZE=$((2 << 30))
echo $((16 << 20)) > $region_path/align
for i in $((1 << 30)) $((2 << 20)) $((4 << 10))
do
json=$($NDCTL create-namespace -r $region -s $SIZE -m fsdax -a $i)
eval $(json2var <<< "$json")
ns2=$dev
$NDCTL disable-namespace $dev
$NDCTL enable-namespace $dev
$NDCTL destroy-namespace $dev -f
unset ns2
done
# final cleanup
$NDCTL destroy-namespace $ns1 -f
exit 0
|
