From d7a616119a4f5fbfa8d0f028e337037a48272048 Mon Sep 17 00:00:00 2001 From: Luke Shumaker Date: Tue, 28 Feb 2023 23:50:32 -0700 Subject: rebuildtrees: Move item-data from btrfsutil.KeyIO to scan --- cmd/btrfs-rec/inspect/rebuildtrees/rebuild.go | 20 ++--- .../inspect/rebuildtrees/rebuild_wantcb.go | 8 +- cmd/btrfs-rec/inspect/rebuildtrees/scan.go | 97 +++++++++++++++++++--- 3 files changed, 99 insertions(+), 26 deletions(-) (limited to 'cmd/btrfs-rec/inspect') diff --git a/cmd/btrfs-rec/inspect/rebuildtrees/rebuild.go b/cmd/btrfs-rec/inspect/rebuildtrees/rebuild.go index ca1ce8c..c1391eb 100644 --- a/cmd/btrfs-rec/inspect/rebuildtrees/rebuild.go +++ b/cmd/btrfs-rec/inspect/rebuildtrees/rebuild.go @@ -47,8 +47,7 @@ func (o keyAndTree) String() string { } type rebuilder struct { - sb btrfstree.Superblock - graph btrfsutil.Graph + scan ScanDevicesResult keyIO *btrfsutil.KeyIO rebuilt *btrfsutil.RebuiltForrest @@ -79,17 +78,18 @@ type Rebuilder interface { func NewRebuilder(ctx context.Context, fs *btrfs.FS, nodeList []btrfsvol.LogicalAddr) (Rebuilder, error) { ctx = dlog.WithField(ctx, "btrfs.inspect.rebuild-trees.step", "read-fs-data") - sb, nodeGraph, keyIO, err := ScanDevices(ctx, fs, nodeList) // ScanDevices does its own logging + scanData, err := ScanDevices(ctx, fs, nodeList) // ScanDevices does its own logging if err != nil { return nil, err } + keyIO := btrfsutil.NewKeyIO(fs, scanData.Superblock, scanData.Graph) + o := &rebuilder{ - sb: sb, - graph: nodeGraph, + scan: scanData, keyIO: keyIO, } - o.rebuilt = btrfsutil.NewRebuiltForrest(sb, nodeGraph, keyIO, o) + o.rebuilt = btrfsutil.NewRebuiltForrest(scanData.Superblock, scanData.Graph, keyIO, o) return o, nil } @@ -385,8 +385,8 @@ func (o *rebuilder) resolveTreeAugments(ctx context.Context, treeID btrfsprim.Ob } else { choices[choice] = ChoiceInfo{ Count: 1, - Distance: discardOK(o.rebuilt.Tree(ctx, treeID).COWDistance(o.graph.Nodes[choice].Owner)), - Generation: o.graph.Nodes[choice].Generation, + Distance: discardOK(o.rebuilt.Tree(ctx, treeID).COWDistance(o.scan.Graph.Nodes[choice].Owner)), + Generation: o.scan.Graph.Nodes[choice].Generation, } } } @@ -399,8 +399,8 @@ func (o *rebuilder) resolveTreeAugments(ctx context.Context, treeID btrfsprim.Ob } else { choices[choice] = ChoiceInfo{ Count: 1, - Distance: discardOK(o.rebuilt.Tree(ctx, treeID).COWDistance(o.graph.Nodes[choice].Owner)), - Generation: o.graph.Nodes[choice].Generation, + Distance: discardOK(o.rebuilt.Tree(ctx, treeID).COWDistance(o.scan.Graph.Nodes[choice].Owner)), + Generation: o.scan.Graph.Nodes[choice].Generation, } } } diff --git a/cmd/btrfs-rec/inspect/rebuildtrees/rebuild_wantcb.go b/cmd/btrfs-rec/inspect/rebuildtrees/rebuild_wantcb.go index 704f4ee..78ed8ab 100644 --- a/cmd/btrfs-rec/inspect/rebuildtrees/rebuild_wantcb.go +++ b/cmd/btrfs-rec/inspect/rebuildtrees/rebuild_wantcb.go @@ -145,7 +145,7 @@ func (o *rebuilder) WantDirIndex(ctx context.Context, reason string, treeID btrf return tgt.Compare(key) }, func(_ btrfsprim.Key, ptr btrfsutil.ItemPtr) bool { - if itemName, ok := o.keyIO.Names[ptr]; ok && bytes.Equal(itemName, name) { + if itemName, ok := o.scan.Names[ptr]; ok && bytes.Equal(itemName, name) { found = true } return !found @@ -166,7 +166,7 @@ func (o *rebuilder) WantDirIndex(ctx context.Context, reason string, treeID btrf return tgt.Compare(key) }, func(_ btrfsprim.Key, ptr btrfsutil.ItemPtr) bool { - if itemName, ok := o.keyIO.Names[ptr]; ok && bytes.Equal(itemName, name) { + if itemName, ok := o.scan.Names[ptr]; ok && bytes.Equal(itemName, name) { wants.InsertFrom(o.rebuilt.Tree(ctx, treeID).LeafToRoots(ctx, ptr.Node)) } return true @@ -203,7 +203,7 @@ func (o *rebuilder) _walkRange( } }, func(runKey btrfsprim.Key, runPtr btrfsutil.ItemPtr) bool { - runSizeAndErr, ok := o.keyIO.Sizes[runPtr] + runSizeAndErr, ok := o.scan.Sizes[runPtr] if !ok { panic(fmt.Errorf("should not happen: %v (%v) did not have a size recorded", runPtr, keyAndTree{TreeID: treeID, Key: runKey})) @@ -372,7 +372,7 @@ func (o *rebuilder) WantCSum(ctx context.Context, reason string, inodeTree, inod if !ok { panic(fmt.Errorf("should not happen: could not load key: %v", inodeWant)) } - inodeFlags, ok := o.keyIO.Flags[inodePtr] + inodeFlags, ok := o.scan.Flags[inodePtr] if !ok { panic(fmt.Errorf("should not happen: INODE_ITEM did not have flags recorded")) } diff --git a/cmd/btrfs-rec/inspect/rebuildtrees/scan.go b/cmd/btrfs-rec/inspect/rebuildtrees/scan.go index 4bc09ad..961ff8d 100644 --- a/cmd/btrfs-rec/inspect/rebuildtrees/scan.go +++ b/cmd/btrfs-rec/inspect/rebuildtrees/scan.go @@ -6,11 +6,14 @@ package rebuildtrees import ( "context" + "fmt" "time" "github.com/datawire/dlib/dlog" "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/btrfsutil" @@ -18,11 +21,31 @@ import ( "git.lukeshu.com/btrfs-progs-ng/lib/textui" ) -func ScanDevices(ctx context.Context, fs *btrfs.FS, nodeList []btrfsvol.LogicalAddr) (btrfstree.Superblock, btrfsutil.Graph, *btrfsutil.KeyIO, error) { +type SizeAndErr struct { + Size uint64 + Err error +} + +type FlagsAndErr struct { + NoDataSum bool + Err error +} + +type ScanDevicesResult struct { + Superblock btrfstree.Superblock + + Graph btrfsutil.Graph + + Flags map[btrfsutil.ItemPtr]FlagsAndErr // INODE_ITEM + Names map[btrfsutil.ItemPtr][]byte // DIR_INDEX + Sizes map[btrfsutil.ItemPtr]SizeAndErr // EXTENT_CSUM and EXTENT_DATA +} + +func ScanDevices(ctx context.Context, fs *btrfs.FS, nodeList []btrfsvol.LogicalAddr) (ScanDevicesResult, error) { dlog.Info(ctx, "Reading superblock...") sb, err := fs.Superblock() if err != nil { - return btrfstree.Superblock{}, btrfsutil.Graph{}, nil, err + return ScanDevicesResult{}, err } dlog.Infof(ctx, "Reading node data from FS...") @@ -33,24 +56,30 @@ func ScanDevices(ctx context.Context, fs *btrfs.FS, nodeList []btrfsvol.LogicalA dlog.WithField(ctx, "btrfs.inspect.rebuild-trees.read.substep", "read-nodes"), dlog.LogLevelInfo, textui.Tunable(1*time.Second)) - nodeGraph := btrfsutil.NewGraph(*sb) - keyIO := btrfsutil.NewKeyIO(fs, *sb) + ret := ScanDevicesResult{ + Superblock: *sb, + + Graph: btrfsutil.NewGraph(*sb), + + Flags: make(map[btrfsutil.ItemPtr]FlagsAndErr), + Names: make(map[btrfsutil.ItemPtr][]byte), + Sizes: make(map[btrfsutil.ItemPtr]SizeAndErr), + } progressWriter.Set(stats) for _, laddr := range nodeList { if err := ctx.Err(); err != nil { - return btrfstree.Superblock{}, btrfsutil.Graph{}, nil, err + return ScanDevicesResult{}, err } node, err := btrfstree.ReadNode[btrfsvol.LogicalAddr](fs, *sb, laddr, btrfstree.NodeExpectations{ LAddr: containers.Optional[btrfsvol.LogicalAddr]{OK: true, Val: laddr}, }) if err != nil { node.Free() - return btrfstree.Superblock{}, btrfsutil.Graph{}, nil, err + return ScanDevicesResult{}, err } - nodeGraph.InsertNode(node) - keyIO.InsertNode(node) + ret.insertNode(node) node.Free() @@ -64,10 +93,54 @@ func ScanDevices(ctx context.Context, fs *btrfs.FS, nodeList []btrfsvol.LogicalA dlog.Info(ctx, "... done reading node data") ctx = dlog.WithField(ctx, "btrfs.inspect.rebuild-trees.read.substep", "check") - if err := nodeGraph.FinalCheck(ctx, fs, *sb); err != nil { - return btrfstree.Superblock{}, btrfsutil.Graph{}, nil, err + if err := ret.Graph.FinalCheck(ctx, fs, *sb); err != nil { + return ScanDevicesResult{}, err } - keyIO.SetGraph(*nodeGraph) - return *sb, *nodeGraph, keyIO, nil + return ret, nil +} + +func (o *ScanDevicesResult) insertNode(node *btrfstree.Node) { + o.Graph.InsertNode(node) + for i, item := range node.BodyLeaf { + ptr := btrfsutil.ItemPtr{ + Node: node.Head.Addr, + Slot: i, + } + switch itemBody := item.Body.(type) { + case *btrfsitem.Inode: + o.Flags[ptr] = FlagsAndErr{ + NoDataSum: itemBody.Flags.Has(btrfsitem.INODE_NODATASUM), + Err: nil, + } + case *btrfsitem.DirEntry: + if item.Key.ItemType == btrfsprim.DIR_INDEX_KEY { + o.Names[ptr] = append([]byte(nil), itemBody.Name...) + } + case *btrfsitem.ExtentCSum: + o.Sizes[ptr] = SizeAndErr{ + Size: uint64(itemBody.Size()), + Err: nil, + } + case *btrfsitem.FileExtent: + size, err := itemBody.Size() + o.Sizes[ptr] = SizeAndErr{ + Size: uint64(size), + Err: err, + } + case *btrfsitem.Error: + switch item.Key.ItemType { + case btrfsprim.INODE_ITEM_KEY: + o.Flags[ptr] = FlagsAndErr{ + Err: fmt.Errorf("error decoding item: ptr=%v (tree=%v key=%v): %w", + ptr, node.Head.Owner, item.Key, itemBody.Err), + } + case btrfsprim.EXTENT_CSUM_KEY, btrfsprim.EXTENT_DATA_KEY: + o.Sizes[ptr] = SizeAndErr{ + Err: fmt.Errorf("error decoding item: ptr=%v (tree=%v key=%v): %w", + ptr, node.Head.Owner, item.Key, itemBody.Err), + } + } + } + } } -- cgit v1.2.3-54-g00ecf