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Import from 4.4BSD-Lite2

This commit is contained in:
tls 1997-04-29 20:07:31 +00:00
parent 891c1283c5
commit eec1ea6c3f
4 changed files with 160 additions and 53 deletions
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4
libexec/lfs_cleanerd/clean.h
View File

@ -30,7 +30,7 @@
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)clean.h 8.1 (Berkeley) 6/4/93
* @(#)clean.h 8.2 (Berkeley) 5/4/95
*/
/*
@ -106,7 +106,7 @@ typedef struct fs_info {
__BEGIN_DECLS
int dump_summary __P((struct lfs *, SEGSUM *, u_long, daddr_t **));
void err __P((const int, const char *, ...));
int fs_getmntinfo __P((struct statfs **, char *, int));
int fs_getmntinfo __P((struct statfs **, char *, char *));
int get __P((int, off_t, void *, size_t));
FS_INFO *get_fs_info __P((struct statfs *, int));
int lfs_segmapv __P((FS_INFO *, int, caddr_t, BLOCK_INFO **, int *));

121
libexec/lfs_cleanerd/cleanerd.c
View File

@ -38,7 +38,7 @@ static char copyright[] =
#endif /* not lint */
#ifndef lint
static char sccsid[] = "@(#)cleanerd.c 8.2 (Berkeley) 1/13/94";
static char sccsid[] = "@(#)cleanerd.c 8.5 (Berkeley) 6/10/95";
#endif /* not lint */
#include <sys/param.h>
@ -57,7 +57,10 @@ static char sccsid[] = "@(#)cleanerd.c 8.2 (Berkeley) 1/13/94";
char *special = "cleanerd";
int do_small = 0;
int do_mmap = 0;
int stat_report = 0;
struct cleaner_stats {
double util_tot;
double util_sos;
int blocks_read;
int blocks_written;
int segs_cleaned;
@ -68,7 +71,7 @@ struct cleaner_stats {
struct seglist {
int sl_id; /* segment number */
int sl_cost; /* cleaning cost */
char sl_empty; /* is segment empty */
char sl_bytes; /* bytes in segment */
};
struct tossstruct {
@ -76,6 +79,8 @@ struct tossstruct {
int seg;
};
#define CLEAN_BYTES 0x1
/* function prototypes for system calls; not sure where they should go */
int lfs_segwait __P((fsid_t *, struct timeval *));
int lfs_segclean __P((fsid_t *, u_long));
@ -86,8 +91,8 @@ int lfs_markv __P((fsid_t *, BLOCK_INFO *, int));
int bi_tossold __P((const void *, const void *, const void *));
int choose_segments __P((FS_INFO *, struct seglist *,
int (*)(FS_INFO *, SEGUSE *)));
void clean_fs __P((FS_INFO *, int (*)(FS_INFO *, SEGUSE *)));
int clean_loop __P((FS_INFO *));
void clean_fs __P((FS_INFO *, int (*)(FS_INFO *, SEGUSE *), int, long));
int clean_loop __P((FS_INFO *, int, long));
int clean_segment __P((FS_INFO *, int));
int cost_benefit __P((FS_INFO *, SEGUSE *));
int cost_compare __P((const void *, const void *));
@ -152,22 +157,37 @@ main(argc, argv)
struct statfs *lstatfsp; /* file system stats */
struct timeval timeout; /* sleep timeout */
fsid_t fsid;
int i, nodaemon;
long clean_opts; /* cleaning options */
int i, nodaemon, segs_per_clean;
int opt, cmd_err;
char *fs_name; /* name of filesystem to clean */
extern int optind;
cmd_err = nodaemon = 0;
while ((opt = getopt(argc, argv, "smd")) != EOF) {
clean_opts = 0;
segs_per_clean = 1;
while ((opt = getopt(argc, argv, "bdmn:r:s")) != EOF) {
switch (opt) {
case 's': /* small writes */
do_small = 1;
case 'b': /*
* Use live bytes to determine
* how many segs to clean.
*/
clean_opts |= CLEAN_BYTES;
break;
case 'm':
case 'd': /* Debug mode. */
nodaemon = 1;
break;
case 'm': /* Use mmap instead of read/write */
do_mmap = 1;
break;
case 'd':
nodaemon = 1;
case 'n': /* How many segs to clean at once */
segs_per_clean = atoi(optarg);
break;
case 'r': /* Report every stat_report segments */
stat_report = atoi(optarg);
break;
case 's': /* small writes */
do_small = 1;
break;
default:
++cmd_err;
@ -183,7 +203,7 @@ main(argc, argv)
signal(SIGINT, sig_report);
signal(SIGUSR1, sig_report);
signal(SIGUSR2, sig_report);
if (fs_getmntinfo(&lstatfsp, fs_name, MOUNT_LFS) == 0) {
if (fs_getmntinfo(&lstatfsp, fs_name, "lfs") == 0) {
/* didn't find the filesystem */
err(1, "lfs_cleanerd: filesystem %s isn't an LFS!", fs_name);
}
@ -205,7 +225,7 @@ main(argc, argv)
* to make sure that some nasty process hasn't just
* filled the disk system up.
*/
if (clean_loop(fsp))
if (clean_loop(fsp, segs_per_clean, clean_opts))
continue;
#ifdef VERBOSE
@ -221,30 +241,42 @@ main(argc, argv)
/* return the number of segments cleaned */
int
clean_loop(fsp)
clean_loop(fsp, nsegs, options)
FS_INFO *fsp; /* file system information */
int nsegs;
long options;
{
double loadavg[MAXLOADS];
time_t now;
u_long max_free_segs;
u_long db_per_seg;
/*
* Compute the maximum possible number of free segments, given the
* number of free blocks.
*/
max_free_segs = fsp->fi_statfsp->f_bfree / fsp->fi_lfs.lfs_ssize;
db_per_seg = fsbtodb(&fsp->fi_lfs, fsp->fi_lfs.lfs_ssize);
max_free_segs = fsp->fi_lfs.lfs_bfree / db_per_seg;
/*
* We will clean if there are not enough free blocks or total clean
* space is less than BUSY_LIM % of possible clean space.
*/
now = time((time_t *)NULL);
if (fsp->fi_cip->clean < max_free_segs &&
#ifdef VERBOSE
printf("db_er_seg = %d max_free_segs = %d, bfree = %d avail = %d ",
db_per_seg, max_free_segs, fsp->fi_lfs.lfs_bfree,
fsp->fi_lfs.lfs_avail);
printf("clean = %d\n", fsp->fi_cip->clean);
#endif
if ((fsp->fi_lfs.lfs_bfree - fsp->fi_lfs.lfs_avail > db_per_seg &&
fsp->fi_lfs.lfs_avail < db_per_seg) ||
(fsp->fi_cip->clean < max_free_segs &&
(fsp->fi_cip->clean <= MIN_SEGS(&fsp->fi_lfs) ||
fsp->fi_cip->clean < max_free_segs * BUSY_LIM)) {
fsp->fi_cip->clean < max_free_segs * BUSY_LIM))) {
printf("Cleaner Running at %s (%d of %d segments available)\n",
ctime(&now), fsp->fi_cip->clean, max_free_segs);
clean_fs(fsp, cost_benefit);
clean_fs(fsp, cost_benefit, nsegs, options);
return (1);
} else {
/*
@ -258,7 +290,7 @@ clean_loop(fsp)
}
if (loadavg[ONE_MIN] == 0.0 && loadavg[FIVE_MIN] &&
fsp->fi_cip->clean < max_free_segs * IDLE_LIM) {
clean_fs(fsp, cost_benefit);
clean_fs(fsp, cost_benefit, nsegs, options);
printf("Cleaner Running at %s (system idle)\n",
ctime(&now));
return (1);
@ -270,11 +302,14 @@ clean_loop(fsp)
void
clean_fs(fsp, cost_func)
clean_fs(fsp, cost_func, nsegs, options)
FS_INFO *fsp; /* file system information */
int (*cost_func) __P((FS_INFO *, SEGUSE *));
int nsegs;
long options;
{
struct seglist *segs, *sp;
int to_clean, cleaned_bytes;
int i;
if ((segs =
@ -288,8 +323,25 @@ clean_fs(fsp, cost_func)
i, fsp->fi_statfsp->f_mntonname);
fflush(stdout);
#endif
if (i)
for (i = MIN(i, NUM_TO_CLEAN(fsp)), sp = segs; i-- ; ++sp) {
if (i) {
/* Check which cleaning algorithm to use. */
if (options & CLEAN_BYTES) {
cleaned_bytes = 0;
to_clean = nsegs <<
(fsp->fi_lfs.lfs_segshift + fsp->fi_lfs.lfs_bshift);
for (sp = segs; i && cleaned_bytes < to_clean;
i--, ++sp) {
if (clean_segment(fsp, sp->sl_id) < 0)
perror("clean_segment failed");
else if (lfs_segclean(&fsp->fi_statfsp->f_fsid,
sp->sl_id) < 0)
perror("lfs_segclean failed");
printf("Cleaned segment %d (%d bytes)\n",
sp->sl_id, sp->sl_bytes);
cleaned_bytes += sp->sl_bytes;
}
} else
for (i = MIN(i, nsegs), sp = segs; i-- ; ++sp) {
if (clean_segment(fsp, sp->sl_id) < 0)
perror("clean_segment failed");
else if (lfs_segclean(&fsp->fi_statfsp->f_fsid,
@ -297,6 +349,7 @@ clean_fs(fsp, cost_func)
perror("lfs_segclean failed");
printf("Completed cleaning segment %d\n", sp->sl_id);
}
}
free(segs);
}
@ -349,7 +402,7 @@ choose_segments(fsp, seglist, cost_func)
#endif
sp->sl_cost = (*cost_func)(fsp, sup);
sp->sl_id = i;
sp->sl_empty = sup->su_nbytes ? 0 : 1;
sp->sl_bytes = sup->su_nbytes;
++sp;
}
nsegs = sp - seglist;
@ -371,6 +424,7 @@ clean_segment(fsp, id)
struct lfs *lfsp;
struct tossstruct t;
caddr_t seg_buf;
double util;
int num_blocks, maxblocks, clean_blocks;
lfsp = &fsp->fi_lfs;
@ -437,8 +491,14 @@ clean_segment(fsp, id)
lp = (u_long *)_bip->bi_bp;
}
}
#endif
++cleaner_stats.segs_cleaned;
cleaner_stats.blocks_written += num_blocks;
util = ((double)num_blocks / fsp->fi_lfs.lfs_ssize);
cleaner_stats.util_tot += util;
cleaner_stats.util_sos += util * util;
if (do_small)
maxblocks = MAXPHYS / fsp->fi_lfs.lfs_bsize - 1;
else
@ -457,7 +517,8 @@ clean_segment(fsp, id)
free(block_array);
munmap_segment(fsp, seg_buf, do_mmap);
++cleaner_stats.segs_cleaned;
if (stat_report && cleaner_stats.segs_cleaned % stat_report == 0)
sig_report(SIGUSR1);
return (0);
}
@ -480,18 +541,30 @@ void
sig_report(sig)
int sig;
{
double avg;
printf("lfs_cleanerd:\t%s%d\n\t\t%s%d\n\t\t%s%d\n\t\t%s%d\n\t\t%s%d\n",
"blocks_read ", cleaner_stats.blocks_read,
"blocks_written ", cleaner_stats.blocks_written,
"segs_cleaned ", cleaner_stats.segs_cleaned,
"segs_empty ", cleaner_stats.segs_empty,
"seg_error ", cleaner_stats.segs_error);
printf("\t\t%s%5.2f\n\t\t%s%5.2f\n",
"util_tot ", cleaner_stats.util_tot,
"util_sos ", cleaner_stats.util_sos);
printf("\t\tavg util: %4.2f std dev: %9.6f\n",
avg = cleaner_stats.util_tot / cleaner_stats.segs_cleaned,
cleaner_stats.util_sos / cleaner_stats.segs_cleaned - avg * avg);
if (sig == SIGUSR2) {
cleaner_stats.blocks_read = 0;
cleaner_stats.blocks_written = 0;
cleaner_stats.segs_cleaned = 0;
cleaner_stats.segs_empty = 0;
cleaner_stats.segs_error = 0;
cleaner_stats.util_tot = 0.0;
cleaner_stats.util_sos = 0.0;
}
if (sig == SIGINT)
exit(0);

44
libexec/lfs_cleanerd/library.c
View File

@ -32,7 +32,7 @@
*/
#ifndef lint
static char sccsid[] = "@(#)library.c 8.1 (Berkeley) 6/4/93";
static char sccsid[] = "@(#)library.c 8.3 (Berkeley) 5/24/95";
#endif /* not lint */
#include <sys/param.h>
@ -73,7 +73,7 @@ int
fs_getmntinfo(buf, name, type)
struct statfs **buf;
char *name;
int type;
char *type;
{
/* allocate space for the filesystem info */
*buf = (struct statfs *)malloc(sizeof(struct statfs));
@ -87,7 +87,7 @@ fs_getmntinfo(buf, name, type)
}
/* check to see if it's the one we want */
if (((*buf)->f_type != type) ||
if (strcmp((*buf)->f_fstypename, type) ||
strncmp(name, (*buf)->f_mntonname, MNAMELEN)) {
/* "this is not the filesystem you're looking for */
free(*buf);
@ -264,7 +264,7 @@ lfs_segmapv(fsp, seg, seg_buf, blocks, bcount)
struct lfs *lfsp;
caddr_t s, segend;
daddr_t pseg_addr, seg_addr;
int i, nelem, nblocks, sumsize;
int i, nelem, nblocks, nsegs, sumsize;
time_t timestamp;
lfsp = &fsp->fi_lfs;
@ -281,19 +281,22 @@ lfs_segmapv(fsp, seg, seg_buf, blocks, bcount)
#endif /* VERBOSE */
*bcount = 0;
for (segend = seg_buf + seg_size(lfsp), timestamp = 0; s < segend; ) {
for (nsegs = 0, timestamp = 0; nsegs < sup->su_nsums; nsegs++) {
sp = (SEGSUM *)s;
nblocks = pseg_valid(fsp, sp);
if (nblocks <= 0) {
printf("Warning: invalid segment summary at 0x%x\n",
pseg_addr);
break;
}
#ifdef VERBOSE
printf("\tpartial at: 0x%x\n", pseg_addr);
print_SEGSUM(lfsp, sp);
fflush(stdout);
#endif /* VERBOSE */
nblocks = pseg_valid(fsp, sp);
if (nblocks <= 0)
break;
/* Check if we have hit old data */
if (timestamp > ((SEGSUM*)s)->ss_create)
break;
@ -303,7 +306,7 @@ lfs_segmapv(fsp, seg, seg_buf, blocks, bcount)
/* Verfiy size of summary block */
sumsize = sizeof(SEGSUM) +
(sp->ss_ninos + INOPB(lfsp) - 1) / INOPB(lfsp);
for (fip = (FINFO *)(sp + 1); i < sp->ss_nfinfo; ++i) {
for (i = 0, fip = (FINFO *)(sp + 1); i < sp->ss_nfinfo; ++i) {
sumsize += sizeof(FINFO) +
(fip->fi_nblocks - 1) * sizeof(daddr_t);
fip = (FINFO *)(&fip->fi_blocks[fip->fi_nblocks]);
@ -368,7 +371,9 @@ add_blocks (fsp, bip, countp, sp, seg_buf, segaddr, psegaddr)
caddr_t bp;
daddr_t *dp, *iaddrp;
int db_per_block, i, j;
int db_frag;
u_long page_size;
long *lp;
#ifdef VERBOSE
printf("FILE INFOS\n");
@ -400,8 +405,24 @@ add_blocks (fsp, bip, countp, sp, seg_buf, segaddr, psegaddr)
bip->bi_segcreate = (time_t)(sp->ss_create);
bip->bi_bp = bp;
bip->bi_version = ifp->if_version;
if (fip->fi_lastlength == page_size) {
bip->bi_size = page_size;
psegaddr += db_per_block;
bp += page_size;
} else {
db_frag = fragstodb(&(fsp->fi_lfs),
numfrags(&(fsp->fi_lfs),
fip->fi_lastlength));
#ifdef VERBOSE
printf("lastlength, frags: %d, %d, %d\n",
fip->fi_lastlength, temp,
bytetoda(fsp, temp));
fflush(stdout);
#endif
bip->bi_size = fip->fi_lastlength;
bp += fip->fi_lastlength;
psegaddr += db_frag;
}
++bip;
++(*countp);
}
@ -486,6 +507,9 @@ pseg_valid (fsp, ssp)
int i, nblocks;
u_long *datap;
if (ssp->ss_magic != SS_MAGIC)
return(0);
if ((nblocks = dump_summary(&fsp->fi_lfs, ssp, 0, NULL)) <= 0 ||
nblocks > fsp->fi_lfs.lfs_ssize - 1)
return(0);

26
libexec/lfs_cleanerd/print.c
View File

@ -32,7 +32,7 @@
*/
#ifndef lint
static char sccsid[] = "@(#)print.c 8.1 (Berkeley) 6/4/93";
static char sccsid[] = "@(#)print.c 8.2 (Berkeley) 5/24/95";
#endif /* not lint */
#include <sys/param.h>
@ -65,22 +65,32 @@ dump_summary(lfsp, sp, flags, iaddrp)
FINFO *fp;
int ck;
if (sp->ss_magic != SS_MAGIC)
return(-1);
if (sp->ss_sumsum != (ck = cksum(&sp->ss_datasum,
LFS_SUMMARY_SIZE - sizeof(sp->ss_sumsum))))
return(-1);
numblocks = (sp->ss_ninos + INOPB(lfsp) - 1) / INOPB(lfsp);
/* Do some basic sanity checking. */
if (sp->ss_nfinfo > LFS_SUMMARY_SIZE / sizeof(FINFO) ||
numblocks > lfsp->lfs_ssize ||
numblocks > LFS_SUMMARY_SIZE / sizeof(daddr_t))
return(-1);
if (flags & DUMP_SUM_HEADER) {
(void)printf(" %s0x%X\t%s%d\t%s%d\n %s0x%X\t%s0x%X",
(void)printf(" %s0x%X\t%s%d\t%s%d\n %s0x%X\t%s0x%X\t%s0x%X\n",
"next ", sp->ss_next,
"nfinfo ", sp->ss_nfinfo,
"ninos ", sp->ss_ninos,
"sumsum ", sp->ss_sumsum,
"datasum ", sp->ss_datasum );
(void)printf("\tcreate %s", ctime((time_t *)&sp->ss_create));
"datasum ", sp->ss_datasum,
"magic ", sp->ss_magic);
(void)printf(" create %s", ctime((time_t *)&sp->ss_create));
}
numblocks = (sp->ss_ninos + INOPB(lfsp) - 1) / INOPB(lfsp);
/* Dump out inode disk addresses */
if (flags & DUMP_INODE_ADDRS)
printf(" Inode addresses:");
@ -161,13 +171,13 @@ dump_super(lfsp)
"cleansz ", lfsp->lfs_cleansz,
"segtabsz ", lfsp->lfs_segtabsz);
(void)printf("%s0x%X\t%s%d\t%s0x%X\t%s%d\n",
(void)printf("%s0x%X\t%s%d\t%s0x%qX\t%s%d\n",
"segmask ", lfsp->lfs_segmask,
"segshift ", lfsp->lfs_segshift,
"bmask ", lfsp->lfs_bmask,
"bshift ", lfsp->lfs_bshift);
(void)printf("%s0x%X\t\t%s%d\t%s0x%X\t%s%d\n",
(void)printf("%s0x%qX\t\t%s%d\t%s0x%qX\t%s%d\n",
"ffmask ", lfsp->lfs_ffmask,
"ffshift ", lfsp->lfs_ffshift,
"fbmask ", lfsp->lfs_fbmask,