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Kent Overstreet 2010-06-01 21:47:35 -07:00
parent b649d43bcc
commit f1a77f3eb0
1 changed files with 38 additions and 2 deletions
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40
bcache-test.c
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@ -10,6 +10,7 @@
#include <string.h> #include <string.h>
#include <unistd.h> #include <unistd.h>
#include <sys/ioctl.h> #include <sys/ioctl.h>
#include <sys/klog.h>
#include <sys/param.h> #include <sys/param.h>
#include <sys/types.h> #include <sys/types.h>
#include <sys/stat.h> #include <sys/stat.h>
@ -95,14 +96,33 @@ struct pagestuff {
int writecount; int writecount;
}; };
void flushlog(int fd, char *logbuf)
{
int w = 0, len = klogctl(4, logbuf, 1 << 21);
if (len == -1) {
perror("Error reading kernel log");
exit(EXIT_FAILURE);
}
while (w < len) {
int r = write(fd, logbuf + w, len - w);
if (r == -1) {
perror("Error writing log");
exit(EXIT_FAILURE);
}
w += r;
}
}
int main(int argc, char **argv) int main(int argc, char **argv)
{ {
bool walk = false, randsize = false, verbose = false, csum = false, destructive = false; bool walk = false, randsize = false, verbose = false, csum = false, destructive = false, log = false;
int fd1, fd2 = 0, direct = 0, nbytes = 4096, j; int fd1, fd2 = 0, logfd, direct = 0, nbytes = 4096, j;
unsigned long size, i, offset = 0, done = 0; unsigned long size, i, offset = 0, done = 0;
void *buf1 = NULL, *buf2 = NULL; void *buf1 = NULL, *buf2 = NULL;
struct pagestuff *pages, *p; struct pagestuff *pages, *p;
unsigned char c[16]; unsigned char c[16];
char logbuf[1 << 21];
time_t last_printed = 0; time_t last_printed = 0;
RC4_KEY writedata; RC4_KEY writedata;
@ -121,6 +141,8 @@ int main(int argc, char **argv)
csum = true; csum = true;
else if (strcmp(argv[i], "write") == 0) else if (strcmp(argv[i], "write") == 0)
destructive = true; destructive = true;
else if (strcmp(argv[i], "log") == 0)
log = true;
else else
break; break;
} }
@ -159,6 +181,15 @@ int main(int argc, char **argv)
} }
//setvbuf(stdout, NULL, _IONBF, 0); //setvbuf(stdout, NULL, _IONBF, 0);
if (log) {
logfd = open("log", O_WRONLY|O_CREAT|O_TRUNC, 0644);
if (logfd == -1) {
perror("Error opening log file");
exit(EXIT_FAILURE);
}
klogctl(8, 0, 6);
}
for (i = 0;; i++) { for (i = 0;; i++) {
bool writing = destructive && (i & 1); bool writing = destructive && (i & 1);
nbytes = randsize ? drand48() * 16 + 1 : 1; nbytes = randsize ? drand48() * 16 + 1 : 1;
@ -169,6 +200,9 @@ int main(int argc, char **argv)
offset %= size; offset %= size;
offset <<= 12; offset <<= 12;
if (log && !(i % 200))
flushlog(logfd, logbuf);
if (!verbose) { if (!verbose) {
time_t now = time(NULL); time_t now = time(NULL);
if (now - last_printed >= 2) { if (now - last_printed >= 2) {
@ -216,6 +250,7 @@ print: printf("Loop %6li offset %9li sectors %3i, %6lu mb done\n",
} }
err: err:
perror("IO error"); perror("IO error");
flushlog(logfd, logbuf);
exit(EXIT_FAILURE); exit(EXIT_FAILURE);
bad: bad:
printf("Bad read! loop %li offset %li readcount %i writecount %i\n", printf("Bad read! loop %li offset %li readcount %i writecount %i\n",
@ -224,5 +259,6 @@ bad:
if (!memcmp(&p->oldcsum[0], c, 16)) if (!memcmp(&p->oldcsum[0], c, 16))
printf("Matches previous csum\n"); printf("Matches previous csum\n");
flushlog(logfd, logbuf);
exit(EXIT_FAILURE); exit(EXIT_FAILURE);
} }