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etcdctl: Add --wal-dir and --backup-wal-dir options to backup command.

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If the WAL is stored in a separate directory then the backup command
would need a --wal-dir option to pick the path to the WAL directory.
The user might also want to store the backup of data and wal separately
for which --backup-wal-dir option is provided.
This commit is contained in:
Ajit Yagaty
2016-05-10 18:38:56 -07:00
committed by Gyu-Ho Lee
parent 743f9c9bb0
commit cf68c2285e
2 changed files with 25 additions and 4 deletions
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19
etcdctl/command/backup_command.go
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@ -37,7 +37,9 @@ func NewBackupCommand() cli.Command {
ArgsUsage: " ",
Flags: []cli.Flag{
cli.StringFlag{Name: "data-dir", Value: "", Usage: "Path to the etcd data dir"},
cli.StringFlag{Name: "wal-dir", Value: "", Usage: "Path to the etcd wal dir"},
cli.StringFlag{Name: "backup-dir", Value: "", Usage: "Path to the backup dir"},
cli.StringFlag{Name: "backup-wal-dir", Value: "", Usage: "Path to the backup wal dir"},
},
Action: handleBackup,
}
@ -45,10 +47,23 @@ func NewBackupCommand() cli.Command {
// handleBackup handles a request that intends to do a backup.
func handleBackup(c *cli.Context) {
var srcWAL string
var destWAL string
srcSnap := path.Join(c.String("data-dir"), "member", "snap")
destSnap := path.Join(c.String("backup-dir"), "member", "snap")
srcWAL := path.Join(c.String("data-dir"), "member", "wal")
destWAL := path.Join(c.String("backup-dir"), "member", "wal")
if c.String("wal-dir") != "" {
srcWAL = c.String("wal-dir")
} else {
srcWAL = path.Join(c.String("data-dir"), "member", "wal")
}
if c.String("backup-wal-dir") != "" {
destWAL = c.String("backup-wal-dir")
} else {
destWAL = path.Join(c.String("backup-dir"), "member", "wal")
}
if err := os.MkdirAll(destSnap, 0700); err != nil {
log.Fatalf("failed creating backup snapshot dir %v: %v", destSnap, err)