Work on the new rebuildmappings

rebuildmappings.go didn't actually change very much, but was reworked to
be multi-device, so the diff looks like it totally changed.

1 files changed, 0 insertions, 130 deletions

diff --git a/lib/btrfsprogs/btrfsinspect/rebuildmappings.go b/lib/btrfsprogs/btrfsinspect/rebuildmappings.go
deleted file mode 100644
index bbfd6b7..0000000
--- a/lib/btrfsprogs/btrfsinspect/rebuildmappings.go
+++ /dev/null
@@ -1,130 +0,0 @@
-// Copyright (C) 2022  Luke Shumaker <lukeshu@lukeshu.com>
-//
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-package btrfsinspect
-
-import (
-	"context"
-	"sort"
-
-	"github.com/datawire/dlib/dlog"
-
-	"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 (found ScanOneDeviceResult) AddToLV(ctx context.Context, fs *btrfs.FS, dev *btrfs.Device) {
-	sb, _ := dev.Superblock()
-
-	total := len(found.FoundChunks) + len(found.FoundDevExtents)
-	for _, paddrs := range found.FoundNodes {
-		total += len(paddrs)
-	}
-	lastProgress := -1
-	done := 0
-	printProgress := func() {
-		pct := int(100 * float64(done) / float64(total))
-		if pct != lastProgress || done == total {
-			dlog.Infof(ctx, "... dev[%q] added %v%% of the mappings (%v/%v=>%v)",
-				dev.Name(), pct, done, total, len(fs.LV.Mappings()))
-			lastProgress = pct
-		}
-	}
-	printProgress()
-
-	for _, chunk := range found.FoundChunks {
-		for _, mapping := range chunk.Chunk.Mappings(chunk.Key) {
-			if err := fs.LV.AddMapping(mapping); err != nil {
-				dlog.Errorf(ctx, "... dev[%q] error: adding chunk: %v",
-					dev.Name(), err)
-			}
-			done++
-			printProgress()
-		}
-	}
-
-	for _, ext := range found.FoundDevExtents {
-		if err := fs.LV.AddMapping(ext.DevExt.Mapping(ext.Key)); err != nil {
-			dlog.Errorf(ctx, "... dev[%q] error: adding devext: %v",
-				dev.Name(), err)
-		}
-		done++
-		printProgress()
-	}
-
-	// Do the nodes last to avoid bloating the mappings table too
-	// much. (Because nodes are numerous and small, while the
-	// others are few and large; so it is likely that many of the
-	// nodes will be subsumed by other things.)
-	//
-	// Sort them so that progress numbers are predictable.
-	for _, laddr := range maps.SortedKeys(found.FoundNodes) {
-		for _, paddr := range found.FoundNodes[laddr] {
-			if err := fs.LV.AddMapping(btrfsvol.Mapping{
-				LAddr: laddr,
-				PAddr: btrfsvol.QualifiedPhysicalAddr{
-					Dev:  sb.DevItem.DevID,
-					Addr: paddr,
-				},
-				Size:       btrfsvol.AddrDelta(sb.NodeSize),
-				SizeLocked: false,
-			}); err != nil {
-				dlog.Errorf(ctx, "... dev[%q] error: adding node ident: %v",
-					dev.Name(), err)
-			}
-			done++
-			printProgress()
-		}
-	}
-
-	// Use block groups to add missing flags (and as a hint to
-	// combine node entries).
-	//
-	// First dedup them, because they change for allocations and
-	// CoW means that they'll bounce around a lot, so you likely
-	// have oodles of duplicates?
-	type blockgroup struct {
-		LAddr btrfsvol.LogicalAddr
-		Size  btrfsvol.AddrDelta
-		Flags btrfsvol.BlockGroupFlags
-	}
-	bgsSet := make(map[blockgroup]struct{})
-	for _, bg := range found.FoundBlockGroups {
-		bgsSet[blockgroup{
-			LAddr: btrfsvol.LogicalAddr(bg.Key.ObjectID),
-			Size:  btrfsvol.AddrDelta(bg.Key.Offset),
-			Flags: bg.BG.Flags,
-		}] = struct{}{}
-	}
-	bgsOrdered := maps.Keys(bgsSet)
-	sort.Slice(bgsOrdered, func(i, j int) bool {
-		return bgsOrdered[i].LAddr < bgsOrdered[j].LAddr
-	})
-	for _, bg := range bgsOrdered {
-		otherLAddr, otherPAddr := fs.LV.ResolveAny(bg.LAddr, bg.Size)
-		if otherLAddr < 0 || otherPAddr.Addr < 0 {
-			dlog.Errorf(ctx, "... dev[%q] error: could not pair blockgroup laddr=%v (size=%v flags=%v) with a mapping",
-				dev.Name(), bg.LAddr, bg.Size, bg.Flags)
-			continue
-		}
-
-		offsetWithinChunk := otherLAddr.Sub(bg.LAddr)
-		mapping := btrfsvol.Mapping{
-			LAddr:      bg.LAddr,
-			PAddr:      otherPAddr.Add(-offsetWithinChunk),
-			Size:       bg.Size,
-			SizeLocked: true,
-			Flags: containers.Optional[btrfsvol.BlockGroupFlags]{
-				OK:  true,
-				Val: bg.Flags,
-			},
-		}
-		if err := fs.LV.AddMapping(mapping); err != nil {
-			dlog.Errorf(ctx, "... dev[%q] error: adding flags from blockgroup: %v",
-				dev.Name(), err)
-		}
-	}
-}