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#!/usr/bin/env bash
set -ex
# create a snapshot, then export it and check that setting read flags works
# by looking at --debug-ms output
function clean_up {
rm -f test.log || true
rbd snap remove test@snap || true
rbd rm test || true
}
function test_read_flags {
local IMAGE=$1
local SET_BALANCED=$2
local SET_LOCALIZED=$3
local EXPECT_BALANCED=$4
local EXPECT_LOCALIZED=$5
local EXTRA_ARGS="--log-file test.log --debug-ms 1 --no-log-to-stderr"
if [ "$SET_BALANCED" = 'y' ]; then
EXTRA_ARGS="$EXTRA_ARGS --rbd-balance-snap-reads"
elif [ "$SET_LOCALIZED" = 'y' ]; then
EXTRA_ARGS="$EXTRA_ARGS --rbd-localize-snap-reads"
fi
rbd export $IMAGE - $EXTRA_ARGS > /dev/null
if [ "$EXPECT_BALANCED" = 'y' ]; then
grep -q balance_reads test.log
else
grep -L balance_reads test.log | grep -q test.log
fi
if [ "$EXPECT_LOCALIZED" = 'y' ]; then
grep -q localize_reads test.log
else
grep -L localize_reads test.log | grep -q test.log
fi
rm -f test.log
}
clean_up
trap clean_up INT TERM EXIT
rbd create --image-feature layering -s 10 test
rbd snap create test@snap
# export from non snapshot with or without settings should not have flags
test_read_flags test n n n n
test_read_flags test y y n n
# export from snapshot should have read flags in log if they are set
test_read_flags test@snap n n n n
test_read_flags test@snap y n y n
test_read_flags test@snap n y n y
# balanced_reads happens to take priority over localize_reads
test_read_flags test@snap y y y n
echo OK
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