diff options
Diffstat (limited to 'cmd/btrfs-rec/inspect_rebuildmappings.go')
| -rw-r--r-- | cmd/btrfs-rec/inspect_rebuildmappings.go | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/cmd/btrfs-rec/inspect_rebuildmappings.go b/cmd/btrfs-rec/inspect_rebuildmappings.go index 9c6b1cc..b215e7a 100644 --- a/cmd/btrfs-rec/inspect_rebuildmappings.go +++ b/cmd/btrfs-rec/inspect_rebuildmappings.go @@ -14,6 +14,9 @@ import ( "git.lukeshu.com/btrfs-progs-ng/cmd/btrfs-rec/inspect/rebuildmappings" "git.lukeshu.com/btrfs-progs-ng/lib/btrfs" + "git.lukeshu.com/btrfs-progs-ng/lib/btrfs/btrfsvol" + "git.lukeshu.com/btrfs-progs-ng/lib/containers" + "git.lukeshu.com/btrfs-progs-ng/lib/maps" ) func init() { @@ -118,5 +121,46 @@ func init() { }), }) + cmd.AddCommand(&cobra.Command{ + Use: "list-nodes", + Short: "Produce a listing of btree nodes from previously read data", + Long: "" + + "This is a variant of `btrfs-rec inspect list-nodes` that takes " + + "advantage of using previously read data from " + + "`btrfs-rec inspect rebuild-nodes scan`.", + Args: cliutil.WrapPositionalArgs(cobra.ExactArgs(1)), + RunE: func(cmd *cobra.Command, args []string) error { + ctx := cmd.Context() + + scanResults, err := readJSONFile[rebuildmappings.ScanDevicesResult](ctx, args[0]) + if err != nil { + return err + } + + var cnt int + for _, devResults := range scanResults { + cnt += len(devResults.FoundNodes) + } + set := make(containers.Set[btrfsvol.LogicalAddr], cnt) + for _, devResults := range scanResults { + for laddr := range devResults.FoundNodes { + set.Insert(laddr) + } + } + nodeList := maps.SortedKeys(set) + + dlog.Infof(ctx, "Writing nodes to stdout...") + if err := writeJSONFile(os.Stdout, nodeList, lowmemjson.ReEncoderConfig{ + Indent: "\t", + ForceTrailingNewlines: true, + }); err != nil { + return err + } + dlog.Info(ctx, "... done writing") + + return nil + }, + }) + inspectors.AddCommand(cmd) } |