1 /* $NetBSD: pass5.c,v 1.24 2008/04/28 20:23:08 martin Exp $ */ 2 3 /*- 4 * Copyright (c) 2000, 2003 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Konrad E. Schroder <perseant@hhhh.org>. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/types.h> 33 #include <sys/param.h> 34 #include <sys/time.h> 35 #include <sys/buf.h> 36 #include <sys/mount.h> 37 38 #include <ufs/ufs/ufsmount.h> 39 #include <ufs/ufs/inode.h> 40 #include <ufs/ufs/dir.h> 41 #define vnode uvnode 42 #include <ufs/lfs/lfs.h> 43 #undef vnode 44 45 #include <string.h> 46 47 #include "bufcache.h" 48 #include "vnode.h" 49 #include "lfs_user.h" 50 51 #include "fsck.h" 52 #include "extern.h" 53 #include "fsutil.h" 54 55 extern SEGUSE *seg_table; 56 extern off_t locked_queue_bytes; 57 58 void 59 pass5(void) 60 { 61 SEGUSE *su; 62 struct ubuf *bp; 63 int i; 64 unsigned long bb; /* total number of used blocks (lower bound) */ 65 unsigned long ubb; /* upper bound number of used blocks */ 66 unsigned long avail; /* blocks available for writing */ 67 unsigned long dmeta; /* blocks in segsums and inodes */ 68 int nclean; /* clean segments */ 69 size_t labelskew; 70 int diddirty; 71 72 /* 73 * Check segment holdings against actual holdings. Check for 74 * "clean" segments that contain live data. If we are only 75 * rolling forward, we can't check the segment holdings, but 76 * we can still check the cleanerinfo data. 77 */ 78 nclean = 0; 79 avail = 0; 80 bb = ubb = 0; 81 dmeta = 0; 82 for (i = 0; i < fs->lfs_nseg; i++) { 83 diddirty = 0; 84 LFS_SEGENTRY(su, fs, i, bp); 85 if (!preen && !(su->su_flags & SEGUSE_DIRTY) && 86 seg_table[i].su_nbytes > 0) { 87 pwarn("CLEAN SEGMENT %d CONTAINS %d BYTES\n", 88 i, seg_table[i].su_nbytes); 89 if (reply("MARK SEGMENT DIRTY")) { 90 su->su_flags |= SEGUSE_DIRTY; 91 ++diddirty; 92 } 93 } 94 if (!preen && su->su_nbytes != seg_table[i].su_nbytes) { 95 pwarn("SEGMENT %d CLAIMS %d BYTES BUT HAS %d", 96 i, su->su_nbytes, seg_table[i].su_nbytes); 97 if ((int32_t)su->su_nbytes > 98 (int32_t)seg_table[i].su_nbytes) 99 pwarn(" (HIGH BY %d)\n", su->su_nbytes - 100 seg_table[i].su_nbytes); 101 else 102 pwarn(" (LOW BY %d)\n", -su->su_nbytes + 103 seg_table[i].su_nbytes); 104 if (reply("FIX")) { 105 su->su_nbytes = seg_table[i].su_nbytes; 106 ++diddirty; 107 } 108 } 109 if (su->su_flags & SEGUSE_DIRTY) { 110 bb += btofsb(fs, su->su_nbytes + 111 su->su_nsums * fs->lfs_sumsize); 112 ubb += btofsb(fs, su->su_nbytes + 113 su->su_nsums * fs->lfs_sumsize + 114 su->su_ninos * fs->lfs_ibsize); 115 dmeta += btofsb(fs, 116 fs->lfs_sumsize * su->su_nsums); 117 dmeta += btofsb(fs, 118 fs->lfs_ibsize * su->su_ninos); 119 } else { 120 nclean++; 121 avail += segtod(fs, 1); 122 if (su->su_flags & SEGUSE_SUPERBLOCK) 123 avail -= btofsb(fs, LFS_SBPAD); 124 if (i == 0 && fs->lfs_version > 1 && 125 fs->lfs_start < btofsb(fs, LFS_LABELPAD)) 126 avail -= btofsb(fs, LFS_LABELPAD) - 127 fs->lfs_start; 128 } 129 if (diddirty) 130 VOP_BWRITE(bp); 131 else 132 brelse(bp, 0); 133 } 134 135 /* Also may be available bytes in current seg */ 136 i = dtosn(fs, fs->lfs_offset); 137 avail += sntod(fs, i + 1) - fs->lfs_offset; 138 /* But do not count minfreesegs */ 139 avail -= segtod(fs, (fs->lfs_minfreeseg - 140 (fs->lfs_minfreeseg / 2))); 141 /* Note we may have bytes to write yet */ 142 avail -= btofsb(fs, locked_queue_bytes); 143 144 if (idaddr) 145 pwarn("NOTE: when using -i, expect discrepancies in dmeta," 146 " avail, nclean, bfree\n"); 147 if (dmeta != fs->lfs_dmeta) { 148 pwarn("DMETA GIVEN AS %d, SHOULD BE %ld\n", fs->lfs_dmeta, 149 dmeta); 150 if (preen || reply("FIX")) { 151 fs->lfs_dmeta = dmeta; 152 sbdirty(); 153 } 154 } 155 if (avail != fs->lfs_avail) { 156 pwarn("AVAIL GIVEN AS %d, SHOULD BE %ld\n", fs->lfs_avail, 157 avail); 158 if (preen || reply("FIX")) { 159 fs->lfs_avail = avail; 160 sbdirty(); 161 } 162 } 163 if (nclean != fs->lfs_nclean) { 164 pwarn("NCLEAN GIVEN AS %d, SHOULD BE %d\n", fs->lfs_nclean, 165 nclean); 166 if (preen || reply("FIX")) { 167 fs->lfs_nclean = nclean; 168 sbdirty(); 169 } 170 } 171 172 labelskew = 0; 173 if (fs->lfs_version > 1 && 174 fs->lfs_start < btofsb(fs, LFS_LABELPAD)) 175 labelskew = btofsb(fs, LFS_LABELPAD); 176 if (fs->lfs_bfree > fs->lfs_dsize - bb - labelskew || 177 fs->lfs_bfree < fs->lfs_dsize - ubb - labelskew) { 178 pwarn("BFREE GIVEN AS %d, SHOULD BE BETWEEN %ld AND %ld\n", 179 fs->lfs_bfree, (fs->lfs_dsize - ubb - labelskew), 180 fs->lfs_dsize - bb - labelskew); 181 if (preen || reply("FIX")) { 182 fs->lfs_bfree = 183 ((fs->lfs_dsize - labelskew - ubb) + 184 fs->lfs_dsize - labelskew - bb) / 2; 185 sbdirty(); 186 } 187 } 188 } 189