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// Copyright (C) 2022-2023 Luke Shumaker <lukeshu@lukeshu.com>
//
// SPDX-License-Identifier: GPL-2.0-or-later
package btrfsutil
import (
"io"
"sort"
"git.lukeshu.com/btrfs-progs-ng/lib/btrfs"
"git.lukeshu.com/btrfs-progs-ng/lib/btrfs/btrfsvol"
"git.lukeshu.com/btrfs-progs-ng/lib/textui"
)
func PrintLogicalSpace(out io.Writer, fs *btrfs.FS) {
mappings := fs.LV.Mappings()
var prevBeg, prevEnd btrfsvol.LogicalAddr
var sumHole, sumChunk btrfsvol.AddrDelta
for _, mapping := range mappings {
if mapping.LAddr > prevEnd {
size := mapping.LAddr.Sub(prevEnd)
textui.Fprintf(out, "logical_hole laddr=%v size=%v\n", prevEnd, size)
sumHole += size
}
if mapping.LAddr != prevBeg {
if !mapping.Flags.OK {
textui.Fprintf(out, "chunk laddr=%v size=%v flags=(missing)\n",
mapping.LAddr, mapping.Size)
} else {
textui.Fprintf(out, "chunk laddr=%v size=%v flags=%v\n",
mapping.LAddr, mapping.Size, mapping.Flags.Val)
}
}
textui.Fprintf(out, "\tstripe dev_id=%v paddr=%v\n",
mapping.PAddr.Dev, mapping.PAddr.Addr)
sumChunk += mapping.Size
prevBeg = mapping.LAddr
prevEnd = mapping.LAddr.Add(mapping.Size)
}
textui.Fprintf(out, "total logical holes = %v (%d)\n", sumHole, int64(sumHole))
textui.Fprintf(out, "total logical chunks = %v (%d)\n", sumChunk, int64(sumChunk))
textui.Fprintf(out, "total logical addr space = %v (%d)\n", prevEnd, int64(prevEnd))
}
func PrintPhysicalSpace(out io.Writer, fs *btrfs.FS) {
mappings := fs.LV.Mappings()
sort.Slice(mappings, func(i, j int) bool {
return mappings[i].PAddr.Compare(mappings[j].PAddr) < 0
})
var prevDev btrfsvol.DeviceID
var prevEnd btrfsvol.PhysicalAddr
var sumHole, sumExt btrfsvol.AddrDelta
for _, mapping := range mappings {
if mapping.PAddr.Dev != prevDev {
prevDev = mapping.PAddr.Dev
prevEnd = 0
}
if mapping.PAddr.Addr > prevEnd {
size := mapping.PAddr.Addr.Sub(prevEnd)
textui.Fprintf(out, "physical_hole paddr=%v size=%v\n", prevEnd, size)
sumHole += size
}
textui.Fprintf(out, "devext dev=%v paddr=%v size=%v laddr=%v\n",
mapping.PAddr.Dev, mapping.PAddr.Addr, mapping.Size, mapping.LAddr)
sumExt += mapping.Size
prevEnd = mapping.PAddr.Addr.Add(mapping.Size)
}
textui.Fprintf(out, "total physical holes = %v (%d)\n", sumHole, int64(sumHole))
textui.Fprintf(out, "total physical extents = %v (%d)\n", sumExt, int64(sumExt))
textui.Fprintf(out, "total physical addr space = %v (%d)\n", prevEnd, int64(prevEnd))
}
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