Minor background cleanups:
1) Set the FS_NEEDSFSCK flag when unexpected problems are encountered. 2) Clear the FS_NEEDSFSCK flag after a successful foreground cleanup. 3) Refuse to run in background when the FS_NEEDSFSCK flag is set. 4) Avoid taking and removing a snapshot when the filesystem is already clean. 5) Properly implement the force cleaning (-f) flag when in preen mode. Note that you need to have revision 1.21 (date: 2001/04/14 05:26:28) of fs.h installed in <ufs/ffs/fs.h> defining FS_NEEDSFSCK for this to compile.
This commit is contained in:
mckusick
parent
3b359dad32
commit
8553bca948
@ -203,7 +203,6 @@ char snapname[BUFSIZ]; /* when doing snapshots, the name of the file */
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char *cdevname; /* name of device being checked */
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long dev_bsize; /* computed value of DEV_BSIZE */
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long secsize; /* actual disk sector size */
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char fflag; /* force check, ignore clean flag */
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char nflag; /* assume a no response */
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char yflag; /* assume a yes response */
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int bkgrdflag; /* use a snapshot to run on an active system */
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@ -313,6 +312,7 @@ void pfatal __P((const char *fmt, ...));
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void pinode __P((ino_t ino));
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void propagate __P((void));
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void pwarn __P((const char *fmt, ...));
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int readsb __P((int listerr));
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int reply __P((char *question));
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void rwerror __P((char *mesg, ufs_daddr_t blk));
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void setinodebuf __P((ino_t));
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@ -321,7 +321,8 @@ ckfini(markclean)
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errx(EEXIT, "panic: lost %d buffers", bufhead.b_size - cnt);
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pbp = pdirbp = (struct bufarea *)0;
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if (cursnapshot == 0 && sblock.fs_clean != markclean) {
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sblock.fs_clean = markclean;
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if ((sblock.fs_clean = markclean) != 0)
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sblock.fs_flags &= ~(FS_UNCLEAN | FS_NEEDSFSCK);
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sbdirty();
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ofsmodified = fsmodified;
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flush(fswritefd, &sblk);
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@ -336,7 +337,7 @@ ckfini(markclean)
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printf("\n***** FILE SYSTEM STILL DIRTY *****\n");
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rerun = 1;
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}
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if (debug)
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if (debug && totalreads > 0)
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printf("cache missed %ld of %ld (%d%%)\n", diskreads,
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totalreads, (int)(diskreads * 100 / totalreads));
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(void)close(fsreadfd);
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@ -649,6 +650,19 @@ pfatal(fmt, va_alist)
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if (usedsoftdep)
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(void)fprintf(stderr,
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"\nUNEXPECTED SOFT UPDATE INCONSISTENCY\n");
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/*
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* Force foreground fsck to clean up inconsistency.
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*/
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if (bkgrdflag) {
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cmd.value = FS_NEEDSFSCK;
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cmd.size = 1;
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if (sysctlbyname("vfs.ffs.setflags", 0, 0,
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&cmd, sizeof cmd) == -1)
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pwarn("CANNOT SET FS_NEEDSFSCK FLAG\n");
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fprintf(stderr, "CANNOT RUN IN BACKGROUND\n");
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ckfini(0);
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exit(EEXIT);
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}
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return;
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}
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if (cdevname == NULL)
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@ -658,6 +672,16 @@ pfatal(fmt, va_alist)
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(void)fprintf(stderr,
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"\n%s: UNEXPECTED%sINCONSISTENCY; RUN fsck MANUALLY.\n",
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cdevname, usedsoftdep ? " SOFT UPDATE " : " ");
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/*
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* Force foreground fsck to clean up inconsistency.
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*/
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if (bkgrdflag) {
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cmd.value = FS_NEEDSFSCK;
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cmd.size = 1;
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if (sysctlbyname("vfs.ffs.setflags", 0, 0,
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&cmd, sizeof cmd) == -1)
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pwarn("CANNOT SET FS_NEEDSFSCK FLAG\n");
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}
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ckfini(0);
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exit(EEXIT);
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}
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@ -47,6 +47,7 @@ static const char rcsid[] =
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#include <sys/param.h>
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#include <sys/stat.h>
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#include <sys/file.h>
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#include <sys/time.h>
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#include <sys/mount.h>
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#include <sys/resource.h>
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@ -199,6 +200,7 @@ checkfilesys(filesys, mntpt, auxdata, child)
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cdevname = filesys;
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if (debug && preen)
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pwarn("starting\n");
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sblock_init();
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/*
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* If we are to do a background check:
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@ -211,14 +213,35 @@ checkfilesys(filesys, mntpt, auxdata, child)
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if (bkgrdflag) {
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if (mntp == NULL) {
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bkgrdflag = 0;
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pwarn("NOT MOUNTED, CANNOT RUN IN BACKGROUND\n");
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pfatal("NOT MOUNTED, CANNOT RUN IN BACKGROUND\n");
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} else if ((mntp->f_flags & MNT_SOFTDEP) == 0) {
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bkgrdflag = 0;
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pwarn("NOT USING SOFT UPDATES, CANNOT RUN IN BACKGROUND\n");
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pfatal("NOT USING SOFT UPDATES, %s\n",
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"CANNOT RUN IN BACKGROUND");
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} else if ((mntp->f_flags & MNT_RDONLY) != 0) {
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bkgrdflag = 0;
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pwarn("MOUNTED READ-ONLY, CANNOT RUN IN BACKGROUND\n");
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} else {
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pfatal("MOUNTED READ-ONLY, CANNOT RUN IN BACKGROUND\n");
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} else if ((fsreadfd = open(filesys, O_RDONLY)) >= 0) {
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if (readsb(0) != 0) {
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if (sblock.fs_flags & FS_NEEDSFSCK) {
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bkgrdflag = 0;
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pfatal("UNEXPECTED INCONSISTENCY, %s\n",
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"CANNOT RUN IN BACKGROUND\n");
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}
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if ((sblock.fs_flags & FS_UNCLEAN) == 0 &&
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skipclean && preen) {
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/*
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* filesystem is clean;
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* skip snapshot and report it clean
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*/
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pwarn("FILESYSTEM CLEAN; %s\n",
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"SKIPPING CHECKS");
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goto clean;
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}
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}
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close(fsreadfd);
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}
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if (bkgrdflag) {
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snprintf(snapname, sizeof snapname, "%s/.fsck_snapshot",
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mntp->f_mntonname);
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args.fspec = snapname;
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@ -228,7 +251,7 @@ checkfilesys(filesys, mntpt, auxdata, child)
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if (errno == EEXIST && unlink(snapname) == 0)
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continue;
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bkgrdflag = 0;
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pwarn("CANNOT CREATE SNAPSHOT %s: %s\n",
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pfatal("CANNOT CREATE SNAPSHOT %s: %s\n",
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snapname, strerror(errno));
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break;
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}
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@ -243,6 +266,7 @@ checkfilesys(filesys, mntpt, auxdata, child)
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pfatal("CAN'T CHECK FILE SYSTEM.");
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return (0);
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case -1:
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clean:
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pwarn("clean, %ld free ", sblock.fs_cstotal.cs_nffree +
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sblock.fs_frag * sblock.fs_cstotal.cs_nbfree);
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printf("(%d frags, %d blocks, %.1f%% fragmentation)\n",
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@ -377,7 +377,12 @@ check_maps(map1, map2, mapsize, startvalue, name, opcode, skip, limit)
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char buf[BUFSIZE];
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long i, j, k, l, m, n, size;
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int astart, aend, ustart, uend;
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void (*msg) __P((const char *fmt, ...));
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if (bkgrdflag)
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msg = pfatal;
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else
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msg = pwarn;
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astart = ustart = aend = uend = -1;
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for (i = 0; i < mapsize; i++) {
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j = *map1++;
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@ -398,10 +403,10 @@ check_maps(map1, map2, mapsize, startvalue, name, opcode, skip, limit)
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continue;
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}
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if (astart == aend)
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pfatal("ALLOCATED %s %d MARKED FREE\n",
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(*msg)("ALLOCATED %s %d MARKED FREE\n",
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name, astart);
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else
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pfatal("%s %sS %d-%d MARKED FREE\n",
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(*msg)("%s %sS %d-%d MARKED FREE\n",
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"ALLOCATED", name, astart, aend);
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astart = aend = n;
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} else {
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@ -452,9 +457,9 @@ check_maps(map1, map2, mapsize, startvalue, name, opcode, skip, limit)
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}
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if (astart != -1)
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if (astart == aend)
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pfatal("ALLOCATED %s %d MARKED FREE\n", name, astart);
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(*msg)("ALLOCATED %s %d MARKED FREE\n", name, astart);
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else
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pfatal("ALLOCATED %sS %d-%d MARKED FREE\n",
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(*msg)("ALLOCATED %sS %d-%d MARKED FREE\n",
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name, astart, aend);
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if (ustart != -1) {
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size = uend - ustart + 1;
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@ -62,7 +62,6 @@ struct bufarea asblk;
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static void badsb __P((int listerr, char *s));
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static int calcsb __P((char *dev, int devfd, struct fs *fs));
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static struct disklabel *getdisklabel __P((char *s, int fd));
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static int readsb __P((int listerr));
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/*
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* Read in a superblock finding an alternate if necessary.
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@ -74,8 +73,7 @@ setup(dev)
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char *dev;
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{
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long cg, size, asked, i, j;
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long skipclean, bmapsize;
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struct disklabel *lp;
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long bmapsize;
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off_t sizepb;
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struct stat statb;
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struct fs proto;
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@ -83,7 +81,6 @@ setup(dev)
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havesb = 0;
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fswritefd = -1;
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cursnapshot = 0;
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skipclean = fflag ? 0 : preen;
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if (stat(dev, &statb) < 0) {
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printf("Can't stat %s: %s\n", dev, strerror(errno));
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if (bkgrdflag) {
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@ -160,18 +157,6 @@ setup(dev)
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}
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if (preen == 0)
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printf("\n");
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fsmodified = 0;
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lfdir = 0;
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initbarea(&sblk);
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initbarea(&asblk);
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sblk.b_un.b_buf = malloc(SBSIZE);
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asblk.b_un.b_buf = malloc(SBSIZE);
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if (sblk.b_un.b_buf == NULL || asblk.b_un.b_buf == NULL)
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errx(EEXIT, "cannot allocate space for superblock");
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if ((lp = getdisklabel(NULL, fsreadfd)))
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dev_bsize = secsize = lp->d_secsize;
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else
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dev_bsize = secsize = DEV_BSIZE;
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/*
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* Read in the superblock, looking for alternates if necessary
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*/
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@ -200,7 +185,7 @@ setup(dev)
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pwarn("USING ALTERNATE SUPERBLOCK AT %d\n", bflag);
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bflag = 0;
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}
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if (skipclean && sblock.fs_clean) {
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if (skipclean && preen && sblock.fs_clean) {
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pwarn("FILESYSTEM CLEAN; SKIPPING CHECKS\n");
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return (-1);
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}
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@ -372,7 +357,7 @@ badsb:
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/*
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* Read in the super block and its summary info.
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*/
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static int
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int
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readsb(listerr)
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int listerr;
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{
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@ -490,6 +475,25 @@ badsb(listerr, s)
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pfatal("BAD SUPER BLOCK: %s\n", s);
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}
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sblock_init()
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{
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struct disklabel *lp;
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fswritefd = -1;
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fsmodified = 0;
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lfdir = 0;
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initbarea(&sblk);
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initbarea(&asblk);
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sblk.b_un.b_buf = malloc(SBSIZE);
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asblk.b_un.b_buf = malloc(SBSIZE);
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if (sblk.b_un.b_buf == NULL || asblk.b_un.b_buf == NULL)
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errx(EEXIT, "cannot allocate space for superblock");
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if ((lp = getdisklabel(NULL, fsreadfd)))
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dev_bsize = secsize = lp->d_secsize;
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else
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dev_bsize = secsize = DEV_BSIZE;
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}
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/*
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* Calculate a prototype superblock based on information in the disk label.
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* When done the cgsblock macro can be calculated and the fs_ncg field
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