Mirroristas/etcd
2
0
Fork 0
mirror of https://github.com/etcd-io/etcd.git synced 2024-09-27 06:25:44 +00:00
Code Issues Packages Projects Releases Wiki Activity

Persists Term in the (bbolt) Backend.

Browse Source 
Additional layer of protection, that allows to validate whether we
start replaying log not only from the proper 'index', but also of the
right 'term'.
This commit is contained in:
Piotr Tabor
2021-05-13 21:02:02 +02:00
parent e44fb40be5
commit ab586cd463
12 changed files with 89 additions and 53 deletions
Download Patch File Download Diff File Expand all files Collapse all files

15
etcdctl/ctlv3/command/migrate_command.go
View File

@@ -82,7 +82,7 @@ func migrateCommandFunc(cmd *cobra.Command, args []string) {
writer, reader, errc = defaultTransformer()
}
st, index := rebuildStoreV2()
st, index, term := rebuildStoreV2()
be := prepareBackend()
defer be.Close()
@@ -92,7 +92,7 @@ func migrateCommandFunc(cmd *cobra.Command, args []string) {
}()
readKeys(reader, be)
cindex.UpdateConsistentIndex(be.BatchTx(), index, true)
cindex.UpdateConsistentIndex(be.BatchTx(), index, term, true)
err := <-errc
if err != nil {
fmt.Println("failed to transform keys")
@@ -127,8 +127,7 @@ func prepareBackend() backend.Backend {
return be
}
func rebuildStoreV2() (v2store.Store, uint64) {
var index uint64
func rebuildStoreV2() (st v2store.Store, index uint64, term uint64) {
cl := membership.NewCluster(zap.NewExample())
waldir := migrateWALdir
@@ -147,6 +146,7 @@ func rebuildStoreV2() (v2store.Store, uint64) {
if snapshot != nil {
walsnap.Index, walsnap.Term = snapshot.Metadata.Index, snapshot.Metadata.Term
index = snapshot.Metadata.Index
term = snapshot.Metadata.Term
}
w, err := wal.OpenForRead(zap.NewExample(), waldir, walsnap)
@@ -160,7 +160,7 @@ func rebuildStoreV2() (v2store.Store, uint64) {
ExitWithError(ExitError, err)
}
st := v2store.New()
st = v2store.New()
if snapshot != nil {
err := st.Recovery(snapshot.Data)
if err != nil {
@@ -191,12 +191,13 @@ func rebuildStoreV2() (v2store.Store, uint64) {
applyRequest(req, applier)
}
}
if ent.Index > index {
if ent.Index >= index {
index = ent.Index
term = ent.Term
}
}
return st, index
return st, index, term
}
func applyConf(cc raftpb.ConfChange, cl *membership.RaftCluster) {