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etcdctl: warn when backend takes too long to open on migrate

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This commit is contained in:
Anthony Romano 2016-12-15 18:54:31 -08:00
parent 52e3dc5eb9
commit e71ff361a4
1 changed files with 15 additions and 1 deletions
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16
etcdctl/ctlv3/command/migrate_command.go
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@ -100,8 +100,22 @@ func migrateCommandFunc(cmd *cobra.Command, args []string) {
}
func prepareBackend() backend.Backend {
var be backend.Backend
bch := make(chan struct{})
dbpath := path.Join(migrateDatadir, "member", "snap", "db")
be := backend.New(dbpath, time.Second, 10000)
go func() {
defer close(bch)
be = backend.New(dbpath, time.Second, 10000)
}()
select {
case <-bch:
case <-time.After(time.Second):
fmt.Fprintf(os.Stderr, "waiting for etcd to close and release its lock on %q\n", dbpath)
<-bch
}
tx := be.BatchTx()
tx.Lock()
tx.UnsafeCreateBucket([]byte("key"))