pass5.c revision 1.27
1 /* $NetBSD: pass5.c,v 1.27 2013/06/08 02:16:03 dholland 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 (at) 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 #define vnode uvnode 39 #include <ufs/lfs/lfs.h> 40 #include <ufs/lfs/lfs_inode.h> 41 #undef vnode 42 43 #include <string.h> 44 45 #include "bufcache.h" 46 #include "vnode.h" 47 #include "lfs_user.h" 48 49 #include "fsck.h" 50 #include "extern.h" 51 #include "fsutil.h" 52 53 extern SEGUSE *seg_table; 54 extern off_t locked_queue_bytes; 55 56 void 57 pass5(void) 58 { 59 SEGUSE *su; 60 struct ubuf *bp; 61 int i; 62 unsigned long bb; /* total number of used blocks (lower bound) */ 63 unsigned long ubb; /* upper bound number of used blocks */ 64 unsigned long avail; /* blocks available for writing */ 65 unsigned long dmeta; /* blocks in segsums and inodes */ 66 int nclean; /* clean segments */ 67 size_t labelskew; 68 int diddirty; 69 70 /* 71 * Check segment holdings against actual holdings. Check for 72 * "clean" segments that contain live data. If we are only 73 * rolling forward, we can't check the segment holdings, but 74 * we can still check the cleanerinfo data. 75 */ 76 nclean = 0; 77 avail = 0; 78 bb = ubb = 0; 79 dmeta = 0; 80 for (i = 0; i < fs->lfs_nseg; i++) { 81 diddirty = 0; 82 LFS_SEGENTRY(su, fs, i, bp); 83 if (!preen && !(su->su_flags & SEGUSE_DIRTY) && 84 seg_table[i].su_nbytes > 0) { 85 pwarn("CLEAN SEGMENT %d CONTAINS %d BYTES\n", 86 i, seg_table[i].su_nbytes); 87 if (reply("MARK SEGMENT DIRTY")) { 88 su->su_flags |= SEGUSE_DIRTY; 89 ++diddirty; 90 } 91 } 92 if (!preen && su->su_nbytes != seg_table[i].su_nbytes) { 93 pwarn("SEGMENT %d CLAIMS %d BYTES BUT HAS %d", 94 i, su->su_nbytes, seg_table[i].su_nbytes); 95 if ((int32_t)su->su_nbytes > 96 (int32_t)seg_table[i].su_nbytes) 97 pwarn(" (HIGH BY %d)\n", su->su_nbytes - 98 seg_table[i].su_nbytes); 99 else 100 pwarn(" (LOW BY %d)\n", -su->su_nbytes + 101 seg_table[i].su_nbytes); 102 if (reply("FIX")) { 103 su->su_nbytes = seg_table[i].su_nbytes; 104 ++diddirty; 105 } 106 } 107 if (su->su_flags & SEGUSE_DIRTY) { 108 bb += btofsb(fs, su->su_nbytes + 109 su->su_nsums * fs->lfs_sumsize); 110 ubb += btofsb(fs, su->su_nbytes + 111 su->su_nsums * fs->lfs_sumsize + 112 su->su_ninos * fs->lfs_ibsize); 113 dmeta += btofsb(fs, 114 fs->lfs_sumsize * su->su_nsums); 115 dmeta += btofsb(fs, 116 fs->lfs_ibsize * su->su_ninos); 117 } else { 118 nclean++; 119 avail += segtod(fs, 1); 120 if (su->su_flags & SEGUSE_SUPERBLOCK) 121 avail -= btofsb(fs, LFS_SBPAD); 122 if (i == 0 && fs->lfs_version > 1 && 123 fs->lfs_start < btofsb(fs, LFS_LABELPAD)) 124 avail -= btofsb(fs, LFS_LABELPAD) - 125 fs->lfs_start; 126 } 127 if (diddirty) 128 VOP_BWRITE(bp); 129 else 130 brelse(bp, 0); 131 } 132 133 /* Also may be available bytes in current seg */ 134 i = dtosn(fs, fs->lfs_offset); 135 avail += sntod(fs, i + 1) - fs->lfs_offset; 136 /* But do not count minfreesegs */ 137 avail -= segtod(fs, (fs->lfs_minfreeseg - 138 (fs->lfs_minfreeseg / 2))); 139 /* Note we may have bytes to write yet */ 140 avail -= btofsb(fs, locked_queue_bytes); 141 142 if (idaddr) 143 pwarn("NOTE: when using -i, expect discrepancies in dmeta," 144 " avail, nclean, bfree\n"); 145 if (dmeta != fs->lfs_dmeta) { 146 pwarn("DMETA GIVEN AS %d, SHOULD BE %ld\n", fs->lfs_dmeta, 147 dmeta); 148 if (preen || reply("FIX")) { 149 fs->lfs_dmeta = dmeta; 150 sbdirty(); 151 } 152 } 153 if (avail != fs->lfs_avail) { 154 pwarn("AVAIL GIVEN AS %d, SHOULD BE %ld\n", fs->lfs_avail, 155 avail); 156 if (preen || reply("FIX")) { 157 fs->lfs_avail = avail; 158 sbdirty(); 159 } 160 } 161 if (nclean != fs->lfs_nclean) { 162 pwarn("NCLEAN GIVEN AS %d, SHOULD BE %d\n", fs->lfs_nclean, 163 nclean); 164 if (preen || reply("FIX")) { 165 fs->lfs_nclean = nclean; 166 sbdirty(); 167 } 168 } 169 170 labelskew = 0; 171 if (fs->lfs_version > 1 && 172 fs->lfs_start < btofsb(fs, LFS_LABELPAD)) 173 labelskew = btofsb(fs, LFS_LABELPAD); 174 if (fs->lfs_bfree > fs->lfs_dsize - bb - labelskew || 175 fs->lfs_bfree < fs->lfs_dsize - ubb - labelskew) { 176 pwarn("BFREE GIVEN AS %d, SHOULD BE BETWEEN %ld AND %ld\n", 177 fs->lfs_bfree, (fs->lfs_dsize - ubb - labelskew), 178 fs->lfs_dsize - bb - labelskew); 179 if (preen || reply("FIX")) { 180 fs->lfs_bfree = 181 ((fs->lfs_dsize - labelskew - ubb) + 182 fs->lfs_dsize - labelskew - bb) / 2; 183 sbdirty(); 184 } 185 } 186 } 187
Indexes created Thu Oct 02 14:10:14 GMT 2025