1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
|
// Copyright (C) 2022 Luke Shumaker <lukeshu@lukeshu.com>
//
// SPDX-License-Identifier: GPL-2.0-or-later
package main
import (
"encoding/json"
"fmt"
"os"
"strconv"
"text/tabwriter"
"github.com/datawire/ocibuild/pkg/cliutil"
"github.com/spf13/cobra"
"git.lukeshu.com/btrfs-progs-ng/lib/btrfs"
"git.lukeshu.com/btrfs-progs-ng/lib/btrfs/btrfsitem"
"git.lukeshu.com/btrfs-progs-ng/lib/btrfs/btrfsprim"
"git.lukeshu.com/btrfs-progs-ng/lib/btrfs/btrfstree"
"git.lukeshu.com/btrfs-progs-ng/lib/btrfs/btrfsvol"
"git.lukeshu.com/btrfs-progs-ng/lib/btrfsprogs/btrfsinspect"
"git.lukeshu.com/btrfs-progs-ng/lib/btrfsprogs/btrfsutil"
"git.lukeshu.com/btrfs-progs-ng/lib/containers"
"git.lukeshu.com/btrfs-progs-ng/lib/diskio"
"git.lukeshu.com/btrfs-progs-ng/lib/maps"
"git.lukeshu.com/btrfs-progs-ng/lib/slices"
)
func init() {
var nodescanFilename string
cmd := subcommand{
Command: cobra.Command{
Use: "ls-trees",
Short: "A brief view what types of items are in each tree",
Args: cliutil.WrapPositionalArgs(cobra.NoArgs),
},
RunE: func(fs *btrfs.FS, cmd *cobra.Command, _ []string) error {
var scanResults map[btrfsvol.DeviceID]btrfsinspect.ScanOneDeviceResult
if nodescanFilename != "" {
scanResultsBytes, err := os.ReadFile(nodescanFilename)
if err != nil {
return err
}
if err := json.Unmarshal(scanResultsBytes, &scanResults); err != nil {
return err
}
}
var treeErrCnt int
var treeItemCnt map[btrfsitem.Type]int
flush := func() {
totalItems := 0
for _, cnt := range treeItemCnt {
totalItems += cnt
}
numWidth := len(strconv.Itoa(slices.Max(treeErrCnt, totalItems)))
table := tabwriter.NewWriter(os.Stdout, 0, 8, 2, ' ', 0)
fmt.Fprintf(table, " errors\t% *s\n", numWidth, strconv.Itoa(treeErrCnt))
for _, typ := range maps.SortedKeys(treeItemCnt) {
fmt.Fprintf(table, " %v items\t% *s\n", typ, numWidth, strconv.Itoa(treeItemCnt[typ]))
}
fmt.Fprintf(table, " total items\t% *s\n", numWidth, strconv.Itoa(totalItems))
table.Flush()
}
visitedNodes := make(containers.Set[btrfsvol.LogicalAddr])
btrfsutil.WalkAllTrees(cmd.Context(), fs, btrfsutil.WalkAllTreesHandler{
PreTree: func(name string, treeID btrfsprim.ObjID) {
treeErrCnt = 0
treeItemCnt = make(map[btrfsitem.Type]int)
fmt.Printf("tree id=%v name=%q\n", treeID, name)
},
Err: func(_ *btrfsutil.WalkError) {
treeErrCnt++
},
TreeWalkHandler: btrfstree.TreeWalkHandler{
Node: func(_ btrfstree.TreePath, ref *diskio.Ref[btrfsvol.LogicalAddr, btrfstree.Node]) error {
visitedNodes.Insert(ref.Addr)
return nil
},
Item: func(_ btrfstree.TreePath, item btrfstree.Item) error {
typ := item.Key.ItemType
treeItemCnt[typ] = treeItemCnt[typ] + 1
return nil
},
BadItem: func(_ btrfstree.TreePath, item btrfstree.Item) error {
typ := item.Key.ItemType
treeItemCnt[typ] = treeItemCnt[typ] + 1
return nil
},
},
PostTree: func(_ string, _ btrfsprim.ObjID) {
flush()
},
})
if nodescanFilename != "" {
treeErrCnt = 0
treeItemCnt = make(map[btrfsitem.Type]int)
fmt.Printf("lost+found\n")
sb, _ := fs.Superblock()
for _, devResults := range scanResults {
for laddr := range devResults.FoundNodes {
if visitedNodes.Has(laddr) {
continue
}
visitedNodes.Insert(laddr)
node, err := btrfstree.ReadNode[btrfsvol.LogicalAddr](fs, *sb, laddr, btrfstree.NodeExpectations{
LAddr: containers.Optional[btrfsvol.LogicalAddr]{OK: true, Val: laddr},
})
if err != nil {
treeErrCnt++
continue
}
for _, item := range node.Data.BodyLeaf {
typ := item.Key.ItemType
treeItemCnt[typ] = treeItemCnt[typ] + 1
}
}
}
flush()
}
return nil
},
}
cmd.Command.Flags().StringVar(&nodescanFilename, "nodescan", "", "Output of scan-for-nodes to use for a lost+found tree")
if err := cmd.Command.MarkFlagFilename("nodescan"); err != nil {
panic(err)
}
inspectors = append(inspectors, cmd)
}
|
