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minio/donut-main.go

99 lines
2.6 KiB

/*
* Minio Cloud Storage, (C) 2015 Minio, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package main
import (
"os"
"path/filepath"
"github.com/minio/cli"
"github.com/minio/minio/pkg/donut"
)
var (
donutSubCommands = []cli.Command{
{
Name: "make",
Description: "make a donut",
Action: makeDonutMain,
CustomHelpTemplate: `NAME:
minio donut {{.Name}} - {{.Description}}
USAGE:
minio donut {{.Name}} DONUTNAME [DISKS...]
EXAMPLES:
1. Make a donut with 4 exports
$ minio donut {{.Name}} mongodb-backup /mnt/export1 /mnt/export2 /mnt/export3 /mnt/export4
2. Make a donut with 16 exports
$ minio donut {{.Name}} operational-data /mnt/export1 /mnt/export2 /mnt/export3 /mnt/export4 /mnt/export5 \
/mnt/export6 /mnt/export7 /mnt/export8 /mnt/export9 /mnt/export10 /mnt/export11 \
/mnt/export12 /mnt/export13 /mnt/export14 /mnt/export15 /mnt/export16
`,
},
}
donutCmd = cli.Command{
Name: "donut",
Usage: "Create and manage a donut configuration",
Subcommands: donutSubCommands,
}
)
func makeDonutMain(c *cli.Context) {
if !c.Args().Present() || c.Args().First() == "help" {
cli.ShowCommandHelpAndExit(c, "make", 1)
}
donutName := c.Args().First()
if c.Args().First() != "" {
if !donut.IsValidDonut(donutName) {
Fatalf("Invalid donutname %s\n", donutName)
}
}
var disks []string
for _, disk := range c.Args().Tail() {
if _, err := isUsable(disk); err != nil {
Fatalln(err)
}
disks = append(disks, disk)
}
for _, disk := range disks {
if err := os.MkdirAll(filepath.Join(disk, donutName), 0700); err != nil {
Fatalln(err)
}
}
hostname, err := os.Hostname()
if err != nil {
Fatalln(err)
}
donutConfig := &donut.Config{}
donutConfig.Version = "0.0.1"
donutConfig.DonutName = donutName
donutConfig.NodeDiskMap = make(map[string][]string)
// keep it in exact order as it was specified, do not try to sort disks
donutConfig.NodeDiskMap[hostname] = disks
// default cache is unlimited
donutConfig.MaxSize = 512000000
if err := donut.SaveConfig(donutConfig); err != nil {
Fatalln(err)
}
Infoln("Success!")
}