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-rw-r--r--bcache-test.c16
1 files changed, 11 insertions, 5 deletions
diff --git a/bcache-test.c b/bcache-test.c
index 93da058..5858cab 100644
--- a/bcache-test.c
+++ b/bcache-test.c
@@ -149,7 +149,7 @@ void usage()
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, rtest = false, wtest = false;
int fd1, fd2 = 0, direct = 0, nbytes = 4096, j, o;
unsigned long size, i, offset = 0, done = 0, unique = 0, benchmark = 0;
void *buf1 = NULL, *buf2 = NULL;
@@ -179,7 +179,10 @@ int main(int argc, char **argv)
csum = true;
break;
case 'w':
- destructive = true;
+ wtest = true;
+ break;
+ case 'r':
+ rtest = true;
break;
case 'l':
klog = true;
@@ -194,6 +197,9 @@ int main(int argc, char **argv)
argv += optind;
argc -= optind;
+ if (!rtest && !wtest)
+ rtest = true;
+
if (argc < 1) {
printf("Please enter a device to test\n");
exit(EXIT_FAILURE);
@@ -204,9 +210,9 @@ int main(int argc, char **argv)
exit(EXIT_FAILURE);
}
- fd1 = open(argv[0], (destructive ? O_RDWR : O_RDONLY)|direct);
+ fd1 = open(argv[0], (wtest ? O_RDWR : O_RDONLY)|direct);
if (!csum && !benchmark)
- fd2 = open(argv[1], (destructive ? O_RDWR : O_RDONLY)|direct);
+ fd2 = open(argv[1], (wtest ? O_RDWR : O_RDONLY)|direct);
if (fd1 == -1 || fd2 == -1) {
perror("Error opening device");
@@ -229,7 +235,7 @@ int main(int argc, char **argv)
//setvbuf(stdout, NULL, _IONBF, 0);
for (i = 0; !benchmark || i < benchmark; i++) {
- bool writing = destructive && (i & 1);
+ bool writing = (wtest && (i & 1)) || !rtest;
nbytes = randsize ? drand48() * 16 + 1 : 1;
nbytes <<= 12;