Simplified distributed block storage with strong consistency, like in Ceph
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#!/bin/bash -ex
. `dirname $0`/run_3osds.sh
# Test basic write and snapshot
$ETCDCTL put /vitastor/config/inode/1/2 '{"name":"testimg","size":'$((32*1024*1024))'}'
LD_PRELOAD="libasan.so.5 build/src/libfio_vitastor.so" \
fio -thread -name=test -ioengine=build/src/libfio_vitastor.so -bs=4M -direct=1 -iodepth=1 -fsync=1 -rw=write \
-etcd=$ETCD_URL -pool=1 -inode=2 -size=32M -cluster_log_level=10
$ETCDCTL put /vitastor/config/inode/1/2 '{"name":"testimg@0","size":'$((32*1024*1024))'}'
$ETCDCTL put /vitastor/config/inode/1/3 '{"parent_id":2,"name":"testimg","size":'$((32*1024*1024))'}'
# Preload build/src/libfio_vitastor.so so libasan detects all symbols
LD_PRELOAD="libasan.so.5 build/src/libfio_vitastor.so" \
fio -thread -name=test -ioengine=build/src/libfio_vitastor.so -bs=4k -direct=1 -iodepth=1 -fsync=32 -buffer_pattern=0xdeadface \
-rw=randwrite -etcd=$ETCD_URL -image=testimg -number_ios=1024
LD_PRELOAD="libasan.so.5 build/src/libfio_vitastor.so" \
fio -thread -name=test -ioengine=build/src/libfio_vitastor.so -bs=4M -direct=1 -iodepth=1 -rw=read -etcd=$ETCD_URL -pool=1 -inode=3 -size=32M
qemu-img convert -S 4096 -p \
-f raw "vitastor:etcd_host=127.0.0.1\:$ETCD_PORT/v3:pool=1:inode=3:size=$((32*1024*1024))" \
-O raw ./testdata/merged.bin
qemu-img convert -S 4096 -p \
-f raw "vitastor:etcd_host=127.0.0.1\:$ETCD_PORT/v3:image=testimg@0" \
-O raw ./testdata/layer0.bin
$ETCDCTL put /vitastor/config/inode/1/3 '{"name":"testimg","size":'$((32*1024*1024))'}'
qemu-img convert -S 4096 -p \
-f raw "vitastor:etcd_host=127.0.0.1\:$ETCD_PORT/v3:image=testimg" \
-O raw ./testdata/layer1.bin
node mon/merge.js ./testdata/layer0.bin ./testdata/layer1.bin ./testdata/check.bin
cmp ./testdata/merged.bin ./testdata/check.bin
# Test merge
$ETCDCTL put /vitastor/config/inode/1/3 '{"parent_id":2,"name":"testimg","size":'$((32*1024*1024))'}'
build/src/vitastor-cli snap-rm --etcd_address $ETCD_URL testimg@0
qemu-img convert -S 4096 -p \
-f raw "vitastor:etcd_host=127.0.0.1\:$ETCD_PORT/v3:image=testimg" \
-O raw ./testdata/merged-by-tool.bin
cmp ./testdata/merged.bin ./testdata/merged-by-tool.bin
format_green OK