Implement large csum_block_size support (more than 4k) + refactor blockstore_flush

tests/run_3osds.sh

@@ -27,7 +27,9 @@ fi
 start_osd()
 {
     local i=$1
-    build/src/vitastor-osd --osd_num $i --bind_address 127.0.0.1 $NO_SAME $OSD_ARGS --etcd_address $ETCD_URL $(build/src/vitastor-disk simple-offsets --format options ./testdata/test_osd$i.bin $OFFSET_ARGS 2>/dev/null) >>./testdata/osd$i.log 2>&1 &
+    build/src/vitastor-osd --osd_num $i --bind_address 127.0.0.1 $NO_SAME $OSD_ARGS --etcd_address $ETCD_URL \
+        $(build/src/vitastor-disk simple-offsets --format options ./testdata/test_osd$i.bin $OFFSET_ARGS 2>/dev/null) \
+        >>./testdata/osd$i.log 2>&1 &
     eval OSD${i}_PID=$!
 }
 

tests/test_heal.sh

@@ -12,6 +12,7 @@ PG_COUNT=32
 . `dirname $0`/run_3osds.sh
 check_qemu
 
+# FIXME: Fix space rebalance priorities :)
 IMG_SIZE=960
 
 $ETCDCTL put /vitastor/config/inode/1/1 '{"name":"testimg","size":'$((IMG_SIZE*1024*1024))'}'
@@ -24,6 +25,7 @@ kill_osds()
 {
     sleep 5
 
+    echo Killing OSD 1
     kill -9 $OSD1_PID
     $ETCDCTL del /vitastor/osd/state/1
 
@@ -38,6 +40,7 @@ kill_osds()
     done
 
     sleep 5
+    echo Starting OSD 7
     start_osd 7
 
     sleep 5