os/bluestore: rename bluefs_super_t::version -> seq

Signed-off-by: Igor Fedotov <[email protected]>

Author: ifed01

src/os/bluestore/BlueFS.cc

@@ -702,7 +702,7 @@ int BlueFS::mkfs(uuid_d osd_uuid, const bluefs_layout_t& layout)
 
   _init_logger();
 
-  super.version = 0;
+  super.seq = 0;
   super.block_size = bdev[BDEV_DB]->get_block_size();
   super.osd_uuid = osd_uuid;
   super.uuid.generate_random();
@@ -1215,20 +1215,20 @@ int BlueFS::fsck()
 
 int BlueFS::_write_super(int dev)
 {
-  ++super.version;
+  ++super.seq;
   // build superblock
   bufferlist bl;
   encode(super, bl);
   uint32_t crc = bl.crc32c(-1);
   encode(crc, bl);
   dout(10) << __func__ << " super block length(encoded): " << bl.length() << dendl;
-  dout(10) << __func__ << " superblock " << super.version << dendl;
+  dout(10) << __func__ << " superblock " << super.seq << dendl;
   dout(10) << __func__ << " log_fnode " << super.log_fnode << dendl;
   ceph_assert_always(bl.length() <= get_super_length());
   bl.append_zero(get_super_length() - bl.length());
 
   bdev[dev]->write(get_super_offset(), bl, false, WRITE_LIFE_SHORT);
-  dout(20) << __func__ << " v " << super.version
+  dout(20) << __func__ << " seq " << super.seq
            << " crc 0x" << std::hex << crc
            << " offset 0x" << get_super_offset() << std::dec
            << dendl;
@@ -1263,7 +1263,7 @@ int BlueFS::_open_super()
          << dendl;
     return -EIO;
   }
-  dout(10) << __func__ << " superblock " << super.version << dendl;
+  dout(10) << __func__ << " superblock " << super.seq << dendl;
   dout(10) << __func__ << " log_fnode " << super.log_fnode << dendl;
   return 0;
 }

src/os/bluestore/bluefs_types.cc

@@ -75,15 +75,15 @@ void bluefs_layout_t::generate_test_instances(list<bluefs_layout_t*>& ls)
 }
 
 // bluefs_super_t
-bluefs_super_t::bluefs_super_t() : version(0), block_size(4096) {
+bluefs_super_t::bluefs_super_t() : seq(0), block_size(4096) {
 }
 
 void bluefs_super_t::encode(bufferlist& bl) const
 {
   ENCODE_START(2, 1, bl);
   encode(uuid, bl);
   encode(osd_uuid, bl);
-  encode(version, bl);
+  encode(seq, bl);
   encode(block_size, bl);
   encode(log_fnode, bl);
   encode(memorized_layout, bl);
@@ -95,7 +95,7 @@ void bluefs_super_t::decode(bufferlist::const_iterator& p)
   DECODE_START(2, p);
   decode(uuid, p);
   decode(osd_uuid, p);
-  decode(version, p);
+  decode(seq, p);
   decode(block_size, p);
   decode(log_fnode, p);
   if (struct_v >= 2) {
@@ -108,7 +108,7 @@ void bluefs_super_t::dump(Formatter *f) const
 {
   f->dump_stream("uuid") << uuid;
   f->dump_stream("osd_uuid") << osd_uuid;
-  f->dump_unsigned("version", version);
+  f->dump_unsigned("seq", seq);
   f->dump_unsigned("block_size", block_size);
   f->dump_object("log_fnode", log_fnode);
 }
@@ -117,15 +117,15 @@ void bluefs_super_t::generate_test_instances(list<bluefs_super_t*>& ls)
 {
   ls.push_back(new bluefs_super_t);
   ls.push_back(new bluefs_super_t);
-  ls.back()->version = 1;
+  ls.back()->seq = 1;
   ls.back()->block_size = 4096;
 }
 
 ostream& operator<<(ostream& out, const bluefs_super_t& s)
 {
   return out << "super(uuid " << s.uuid
 	     << " osd " << s.osd_uuid
-	     << " v " << s.version
+	     << " seq " << s.seq
 	     << " block_size 0x" << std::hex << s.block_size
 	     << " log_fnode 0x" << s.log_fnode
 	     << std::dec << ")";

src/os/bluestore/bluefs_types.h

@@ -213,7 +213,7 @@ WRITE_CLASS_ENCODER(bluefs_layout_t)
 struct bluefs_super_t {
   uuid_d uuid;      ///< unique to this bluefs instance
   uuid_d osd_uuid;  ///< matches the osd that owns us
-  uint64_t version; ///< In fact that's update counter
+  uint64_t seq;     ///< sequence counter
   uint32_t block_size;
 
   bluefs_fnode_t log_fnode;