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#include <fcntl.h>
#include <unistd.h>
#include <time.h>
#include <limits.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <glusterfs/api/glfs.h>
#include <glusterfs/api/glfs-handles.h>
#define LOG_ERR(msg) \
do { \
fprintf(stderr, "%s : Error (%s)\n", msg, strerror(errno)); \
} while (0)
int
fill_iov(struct iovec *iov, char fillchar, int count)
{
int ret = -1;
iov->iov_base = calloc(count + 1, sizeof(fillchar));
if (iov->iov_base == NULL) {
return ret;
} else {
iov->iov_len = count;
ret = 0;
}
memset(iov->iov_base, fillchar, count);
memset(iov->iov_base + count, '\0', 1);
return ret;
}
glfs_t *
init_glfs(const char *hostname, const char *volname, const char *logfile)
{
int ret = -1;
glfs_t *fs = NULL;
fs = glfs_new(volname);
if (!fs) {
LOG_ERR("glfs_new failed");
return NULL;
}
ret = glfs_set_volfile_server(fs, "tcp", hostname, 24007);
if (ret < 0) {
LOG_ERR("glfs_set_volfile_server failed");
goto out;
}
ret = glfs_set_logging(fs, logfile, 7);
if (ret < 0) {
LOG_ERR("glfs_set_logging failed");
goto out;
}
ret = glfs_init(fs);
if (ret < 0) {
LOG_ERR("glfs_init failed");
goto out;
}
ret = 0;
out:
if (ret) {
glfs_fini(fs);
fs = NULL;
}
return fs;
}
int
main(int argc, char *argv[])
{
char *hostname = NULL;
char *volname = NULL;
char *logfile = NULL;
glfs_t *fs = NULL;
glfs_fd_t *glfd = NULL;
int ret = 0;
int i = 0;
int count = 200;
struct iovec iov = {0};
int flags = O_RDWR;
int bricksup = 0;
int fdopen = 0;
if (argc != 4) {
fprintf(stderr, "Invalid argument\n");
exit(1);
}
hostname = argv[1];
volname = argv[2];
logfile = argv[3];
fs = init_glfs(hostname, volname, logfile);
if (fs == NULL) {
LOG_ERR("init_glfs failed");
return -1;
}
/* Brick is down and we are opening a file to trigger fd heal. */
/* Bypass Write-behind */
glfd = glfs_open(fs, "a", O_WRONLY | O_TRUNC | O_SYNC);
if (glfd == NULL) {
LOG_ERR("glfs_open_truncate failed");
exit(1);
}
system("gluster --mode=script volume start patchy force");
/*CHILD_UP_TIMEOUT is 20 seconds*/
for (i = 0; i < 20; i++) {
ret = system(
"[ $(gluster --mode=script volume status patchy | "
"grep \" Y \" | awk '{print $(NF-1)}' | wc -l) == 3 ]");
if (WIFEXITED(ret) && WEXITSTATUS(ret)) {
printf("Ret value of system: %d\n, ifexited: %d, exitstatus: %d",
ret, WIFEXITED(ret), WEXITSTATUS(ret));
sleep(1);
continue;
}
printf("Number of loops: %d\n", i);
bricksup = 1;
break;
}
if (!bricksup) {
system("gluster --mode=script volume status patchy");
LOG_ERR("Bricks didn't come up\n");
exit(1);
}
/*Not sure how to check that the child-up reached EC, so sleep 3 for now*/
sleep(3);
ret = fill_iov(&iov, 'a', 200);
if (ret) {
LOG_ERR("failed to create iov");
exit(1);
}
/*write will trigger re-open*/
ret = glfs_pwritev(glfd, &iov, 1, 0, flags);
if (ret < 0) {
LOG_ERR("glfs_test_function failed");
exit(1);
}
/*Check reopen happened by checking for open-fds on the brick*/
for (i = 0; i < 20; i++) {
ret = system(
"[ $(for i in $(pgrep glusterfsd); do ls -l /proc/$i/fd | grep "
"\"[.]glusterfs\" | grep -v \".glusterfs/[0-9a-f][0-9a-f]\" | grep "
"-v health_check; done | wc -l) == 3 ]");
if (WIFEXITED(ret) && WEXITSTATUS(ret)) {
printf("Ret value of system: %d\n, ifexited: %d, exitstatus: %d",
ret, WIFEXITED(ret), WEXITSTATUS(ret));
sleep(1);
continue;
}
fdopen = 1;
break;
}
if (!fdopen) {
LOG_ERR("fd reopen didn't succeed");
exit(1);
}
return 0;
}
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