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read/write and write only modes

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This commit is contained in:
Kent Overstreet 2010-08-03 21:04:47 -07:00
parent e7b1ba1bd0
commit 1d895a5a45
1 changed files with 11 additions and 5 deletions
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16
bcache-test.c
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@ -149,7 +149,7 @@ void usage()
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, rtest = false, wtest = false;
int fd1, fd2 = 0, direct = 0, nbytes = 4096, j, o; int fd1, fd2 = 0, direct = 0, nbytes = 4096, j, o;
unsigned long size, i, offset = 0, done = 0, unique = 0, benchmark = 0; unsigned long size, i, offset = 0, done = 0, unique = 0, benchmark = 0;
void *buf1 = NULL, *buf2 = NULL; void *buf1 = NULL, *buf2 = NULL;
@ -179,7 +179,10 @@ int main(int argc, char **argv)
csum = true; csum = true;
break; break;
case 'w': case 'w':
destructive = true; wtest = true;
break;
case 'r':
rtest = true;
break; break;
case 'l': case 'l':
klog = true; klog = true;
@ -194,6 +197,9 @@ int main(int argc, char **argv)
argv += optind; argv += optind;
argc -= optind; argc -= optind;
if (!rtest && !wtest)
rtest = true;
if (argc < 1) { if (argc < 1) {
printf("Please enter a device to test\n"); printf("Please enter a device to test\n");
exit(EXIT_FAILURE); exit(EXIT_FAILURE);
@ -204,9 +210,9 @@ int main(int argc, char **argv)
exit(EXIT_FAILURE); 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) 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) { if (fd1 == -1 || fd2 == -1) {
perror("Error opening device"); perror("Error opening device");
@ -229,7 +235,7 @@ int main(int argc, char **argv)
//setvbuf(stdout, NULL, _IONBF, 0); //setvbuf(stdout, NULL, _IONBF, 0);
for (i = 0; !benchmark || i < benchmark; i++) { 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 = randsize ? drand48() * 16 + 1 : 1;
nbytes <<= 12; nbytes <<= 12;