mirror of https://github.com/minio/minio.git
120 lines
3.7 KiB
Go
120 lines
3.7 KiB
Go
// Copyright (c) 2015-2024 MinIO, Inc.
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//
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// This file is part of MinIO Object Storage stack
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package cmd
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import (
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"encoding/json"
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"log"
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"os"
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"path/filepath"
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"github.com/klauspost/compress/zip"
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"github.com/minio/cli"
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)
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var fmtGenFlags = []cli.Flag{
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cli.IntFlag{
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Name: "parity",
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Usage: "specify erasure code parity",
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},
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cli.StringFlag{
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Name: "deployment-id",
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Usage: "deployment-id of the MinIO cluster for which format.json is needed",
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},
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cli.StringFlag{
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Name: "address",
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Value: ":" + GlobalMinioDefaultPort,
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Usage: "bind to a specific ADDRESS:PORT, ADDRESS can be an IP or hostname",
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EnvVar: "MINIO_ADDRESS",
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},
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}
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var fmtGenCmd = cli.Command{
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Name: "fmt-gen",
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Usage: "Generate format.json files for an erasure server pool",
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Flags: append(fmtGenFlags, GlobalFlags...),
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Action: fmtGenMain,
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Hidden: true,
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CustomHelpTemplate: `NAME:
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{{.HelpName}} - {{.Usage}}
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USAGE:
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{{.HelpName}} {{if .VisibleFlags}}[FLAGS] {{end}}DIR1 [DIR2..]
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{{.HelpName}} {{if .VisibleFlags}}[FLAGS] {{end}}DIR{1...64}
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{{.HelpName}} {{if .VisibleFlags}}[FLAGS] {{end}}DIR{1...64} DIR{65...128}
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DIR:
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DIR points to a directory on a filesystem. When you want to combine
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multiple drives into a single large system, pass one directory per
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filesystem separated by space. You may also use a '...' convention
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to abbreviate the directory arguments. Remote directories in a
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distributed setup are encoded as HTTP(s) URIs.
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{{if .VisibleFlags}}
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FLAGS:
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{{range .VisibleFlags}}{{.}}
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{{end}}{{end}}
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EXAMPLES:
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1. Generate format.json.zip containing format.json files for all drives in a distributed MinIO server pool of 32 nodes with 32 drives each.
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{{.Prompt}} {{.HelpName}} http://node{1...32}.example.com/mnt/export{1...32}
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`,
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}
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func fmtGenMain(ctxt *cli.Context) {
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deploymentID := ctxt.String("deployment-id")
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err := buildServerCtxt(ctxt, &globalServerCtxt)
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if err != nil {
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log.Fatalln(err)
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}
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handleCommonArgs(globalServerCtxt)
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pools, _, err := createServerEndpoints(globalMinioAddr, globalServerCtxt.Layout.pools, globalServerCtxt.Layout.legacy)
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if err != nil {
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log.Fatalln(err)
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}
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zipFile, err := os.Create("format.json.zip")
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if err != nil {
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log.Fatalf("failed to create format.json.zip: %v", err)
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}
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defer zipFile.Close()
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fmtZipW := zip.NewWriter(zipFile)
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defer fmtZipW.Close()
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for _, pool := range pools { // for each pool
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setCount, setDriveCount := pool.SetCount, pool.DrivesPerSet
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format := newFormatErasureV3(setCount, setDriveCount)
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format.ID = deploymentID
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for i := range setCount { // for each erasure set
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for j := range setDriveCount {
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newFormat := format.Clone()
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newFormat.Erasure.This = format.Erasure.Sets[i][j]
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if deploymentID != "" {
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newFormat.ID = deploymentID
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}
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drive := pool.Endpoints[i*setDriveCount+j]
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fmtBytes, err := json.Marshal(newFormat)
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if err != nil {
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//nolint:gocritic
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log.Fatalf("failed to marshal format.json for %s: %v", drive.String(), err)
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}
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fmtJSON := filepath.Join(drive.Host, drive.Path, minioMetaBucket, "format.json")
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embedFileInZip(fmtZipW, fmtJSON, fmtBytes, 0o600)
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}
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}
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}
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}
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