pass5.c revision 1.18
1 /* $NetBSD: pass5.c,v 1.18 2006/04/17 19:05:16 perseant 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 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #include <sys/types.h> 40 #include <sys/param.h> 41 #include <sys/time.h> 42 #include <sys/buf.h> 43 #include <sys/mount.h> 44 45 #include <ufs/ufs/ufsmount.h> 46 #include <ufs/ufs/inode.h> 47 #include <ufs/ufs/dir.h> 48 #define vnode uvnode 49 #include <ufs/lfs/lfs.h> 50 #undef vnode 51 52 #include <string.h> 53 54 #include "bufcache.h" 55 #include "vnode.h" 56 #include "lfs_user.h" 57 58 #include "fsck.h" 59 #include "extern.h" 60 #include "fsutil.h" 61 62 extern SEGUSE *seg_table; 63 extern off_t locked_queue_bytes; 64 65 void 66 pass5(void) 67 { 68 SEGUSE *su; 69 struct ubuf *bp; 70 int i; 71 unsigned long bb; /* total number of used blocks (lower bound) */ 72 unsigned long ubb; /* upper bound number of used blocks */ 73 unsigned long avail; /* blocks available for writing */ 74 unsigned long dmeta; /* blocks in segsums and inodes */ 75 int nclean; /* clean segments */ 76 size_t labelskew; 77 int diddirty; 78 79 /* 80 * Check segment holdings against actual holdings. Check for 81 * "clean" segments that contain live data. If we are only 82 * rolling forward, we can't check the segment holdings, but 83 * we can still check the cleanerinfo data. 84 */ 85 nclean = 0; 86 avail = 0; 87 bb = ubb = 0; 88 dmeta = 0; 89 for (i = 0; i < fs->lfs_nseg; i++) { 90 diddirty = 0; 91 LFS_SEGENTRY(su, fs, i, bp); 92 if (!preen && !(su->su_flags & SEGUSE_DIRTY) && 93 seg_table[i].su_nbytes > 0) { 94 pwarn("CLEAN SEGMENT %d CLAIMS %d BYTES\n", 95 seg_table[i].su_nbytes, i); 96 if (reply("MARK SEGMENT DIRTY")) { 97 su->su_flags |= SEGUSE_DIRTY; 98 ++diddirty; 99 } 100 } 101 if (!preen && (su->su_flags & SEGUSE_DIRTY) && 102 su->su_nbytes != seg_table[i].su_nbytes) { 103 pwarn("SEGMENT %d CLAIMS %d BYTES BUT HAS %d", 104 i, su->su_nbytes, seg_table[i].su_nbytes); 105 if ((int32_t)su->su_nbytes > 106 (int32_t)seg_table[i].su_nbytes) 107 pwarn(" (HIGH BY %d)\n", su->su_nbytes - 108 seg_table[i].su_nbytes); 109 else 110 pwarn(" (LOW BY %d)\n", -su->su_nbytes + 111 seg_table[i].su_nbytes); 112 if (reply("FIX")) { 113 su->su_nbytes = seg_table[i].su_nbytes; 114 ++diddirty; 115 } 116 } 117 if (su->su_flags & SEGUSE_DIRTY) { 118 bb += btofsb(fs, su->su_nbytes + 119 su->su_nsums * fs->lfs_sumsize); 120 ubb += btofsb(fs, su->su_nbytes + 121 su->su_nsums * fs->lfs_sumsize + 122 su->su_ninos * fs->lfs_ibsize); 123 dmeta += btofsb(fs, 124 fs->lfs_sumsize * su->su_nsums); 125 dmeta += btofsb(fs, 126 fs->lfs_ibsize * su->su_ninos); 127 } else { 128 nclean++; 129 avail += segtod(fs, 1); 130 if (su->su_flags & SEGUSE_SUPERBLOCK) 131 avail -= btofsb(fs, LFS_SBPAD); 132 if (i == 0 && fs->lfs_version > 1 && 133 fs->lfs_start < btofsb(fs, LFS_LABELPAD)) 134 avail -= btofsb(fs, LFS_LABELPAD) - 135 fs->lfs_start; 136 } 137 if (diddirty) 138 VOP_BWRITE(bp); 139 else 140 brelse(bp); 141 } 142 143 /* Also may be available bytes in current seg */ 144 i = dtosn(fs, fs->lfs_offset); 145 avail += sntod(fs, i + 1) - fs->lfs_offset; 146 /* But do not count minfreesegs */ 147 avail -= segtod(fs, (fs->lfs_minfreeseg - 148 (fs->lfs_minfreeseg / 2))); 149 /* Note we may have bytes to write yet */ 150 avail -= btofsb(fs, locked_queue_bytes); 151 152 if (idaddr) 153 pwarn("NOTE: when using -i, expect discrepancies in dmeta," 154 " avail, nclean, bfree\n"); 155 if (dmeta != fs->lfs_dmeta) { 156 pwarn("DMETA GIVEN AS %d, SHOULD BE %ld\n", fs->lfs_dmeta, 157 dmeta); 158 if (preen || reply("FIX")) { 159 fs->lfs_dmeta = dmeta; 160 sbdirty(); 161 } 162 } 163 if (avail != fs->lfs_avail) { 164 pwarn("AVAIL GIVEN AS %d, SHOULE BE %ld\n", fs->lfs_avail, 165 avail); 166 if (preen || reply("FIX")) { 167 fs->lfs_avail = avail; 168 sbdirty(); 169 } 170 } 171 if (nclean != fs->lfs_nclean) { 172 pwarn("NCLEAN GIVEN AS %d, SHOULE BE %d\n", fs->lfs_nclean, 173 nclean); 174 if (preen || reply("FIX")) { 175 fs->lfs_nclean = nclean; 176 sbdirty(); 177 } 178 } 179 180 labelskew = 0; 181 if (fs->lfs_version > 1 && 182 fs->lfs_start < btofsb(fs, LFS_LABELPAD)) 183 labelskew = btofsb(fs, LFS_LABELPAD); 184 if (fs->lfs_bfree > fs->lfs_dsize - bb - labelskew || 185 fs->lfs_bfree < fs->lfs_dsize - ubb - labelskew) { 186 pwarn("BFREE GIVEN AS %d, SHOULD BE BETWEEN %ld AND %ld\n", 187 fs->lfs_bfree, MAX(0, fs->lfs_dsize - ubb - labelskew), 188 fs->lfs_dsize - bb - labelskew); 189 if (preen || reply("FIX")) { 190 fs->lfs_bfree = 191 (MAX(0, fs->lfs_dsize - labelskew - ubb) + 192 fs->lfs_dsize - labelskew - bb) / 2; 193 sbdirty(); 194 } 195 } 196 } 197
Indexes created Thu Oct 02 14:10:14 GMT 2025