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tromcho.net/tests/test_snapshot_read_bitmap.sh

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#!/bin/bash -ex
SCHEME=${SCHEME:-ec}
. `dirname $0`/run_3osds.sh
check_qemu
$VITASTOR_CLI create -s 128M testchain
dd if=/dev/zero of=./testdata/bin/mirror.bin bs=4k seek=$(((128*1024-4)/4)) count=1
$VITASTOR_FIO -bs=32k -direct=1 -iodepth=4 -end_fsync=1 -rw=randwrite \
-image=testchain -mirror_file=./testdata/bin/mirror.bin -buffer_pattern=0xabcd -number_ios=1024
$VITASTOR_CLI snap-create testchain@snap1
$VITASTOR_FIO -bs=4k -direct=1 -iodepth=4 -end_fsync=1 -rw=randwrite -number_ios=32 \
-image=testchain -mirror_file=./testdata/bin/mirror.bin -buffer_pattern=0xabcd
# Now read from the snapshot
dd if=/dev/zero of=./testdata/bin/res.bin bs=4k seek=$(((128*1024-4)/4)) count=1
$VITASTOR_CLI dd iimg=testchain of=./testdata/bin/res.bin bs=$((PG_DATA_SIZE*128))k iodepth=4 --log_level 10
cmp ./testdata/bin/res.bin ./testdata/bin/mirror.bin
$VITASTOR_CLI dd iimg=testchain of=./testdata/bin/res.bin bs=$((PG_DATA_SIZE*128))k iodepth=4 conv=nosparse
cmp ./testdata/bin/res.bin ./testdata/bin/mirror.bin
qemu-img convert -p \
-f raw "vitastor:config_path=$VITASTOR_CFG:image=testchain" \
-O raw ./testdata/bin/res.bin
cmp ./testdata/bin/res.bin ./testdata/bin/mirror.bin
format_green OK