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This commit is contained in:
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 <unistd.h>
#include <sys/ioctl.h>
#include <sys/klog.h>
#include <sys/param.h>
#include <sys/types.h>
#include <sys/stat.h>
@ -95,14 +96,33 @@ struct pagestuff {
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)
{
bool walk = false, randsize = false, verbose = false, csum = false, destructive = false;
int fd1, fd2 = 0, direct = 0, nbytes = 4096, j;
bool walk = false, randsize = false, verbose = false, csum = false, destructive = false, log = false;
int fd1, fd2 = 0, logfd, direct = 0, nbytes = 4096, j;
unsigned long size, i, offset = 0, done = 0;
void *buf1 = NULL, *buf2 = NULL;
struct pagestuff *pages, *p;
unsigned char c[16];
char logbuf[1 << 21];
time_t last_printed = 0;
RC4_KEY writedata;
@ -121,6 +141,8 @@ int main(int argc, char **argv)
csum = true;
else if (strcmp(argv[i], "write") == 0)
destructive = true;
else if (strcmp(argv[i], "log") == 0)
log = true;
else
break;
}
@ -158,6 +180,15 @@ int main(int argc, char **argv)
exit(EXIT_FAILURE);
}
//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++) {
bool writing = destructive && (i & 1);
@ -169,6 +200,9 @@ int main(int argc, char **argv)
offset %= size;
offset <<= 12;
if (log && !(i % 200))
flushlog(logfd, logbuf);
if (!verbose) {
time_t now = time(NULL);
if (now - last_printed >= 2) {
@ -216,6 +250,7 @@ print: printf("Loop %6li offset %9li sectors %3i, %6lu mb done\n",
}
err:
perror("IO error");
flushlog(logfd, logbuf);
exit(EXIT_FAILURE);
bad:
printf("Bad read! loop %li offset %li readcount %i writecount %i\n",
@ -224,5 +259,6 @@ bad:
if (!memcmp(&p->oldcsum[0], c, 16))
printf("Matches previous csum\n");
flushlog(logfd, logbuf);
exit(EXIT_FAILURE);
}