gitlab-com-seaweedfs/seaweedfs
1
0
Fork 0
mirror of https://github.com/seaweedfs/seaweedfs.git synced 2024-01-19 02:48:24 +00:00
Code Issues Projects Releases Wiki Activity

super block reserves a couple of bits for future extension

Browse source
This commit is contained in:
Chris Lu 2018-06-24 15:23:03 -07:00
parent f339e9c284
commit 7f6500ae07
1 changed files with 3 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

5
weed/storage/volume_super_block.go
View file

@ -55,8 +55,9 @@ func (s *SuperBlock) Bytes() []byte {
glog.Fatalf("cannot marshal super block extra %+v: %v", s.Extra, err) glog.Fatalf("cannot marshal super block extra %+v: %v", s.Extra, err)
} }
extraSize := len(extraData) extraSize := len(extraData)
if extraSize > 256*256 { if extraSize > 256*256-2 {
glog.Fatalf("super block extra size is %d bigger than %d: %v", extraSize, 256*256) // reserve a couple of bits for future extension
glog.Fatalf("super block extra size is %d bigger than %d: %v", extraSize, 256*256-2)
} }
s.extraSize = uint16(extraSize) s.extraSize = uint16(extraSize)
util.Uint16toBytes(header[6:8], s.extraSize) util.Uint16toBytes(header[6:8], s.extraSize)