- /* safemode disabled ? */
- if (mdi->safe_mode_delay == 0)
- rv = 0;
-
- if (rv) {
- int state_fd = sysfs_open(fd2devnum(fd), NULL, "array_state");
- char buf[20];
- fd_set fds;
- struct timeval tm;
-
- /* minimize the safe_mode_delay and prepare to wait up to 5s
- * for writes to quiesce
- */
- sysfs_set_safemode(mdi, 1);
- tm.tv_sec = 5;
- tm.tv_usec = 0;
-
- /* give mdmon a chance to checkpoint resync */
- sysfs_set_str(mdi, NULL, "sync_action", "idle");
-
- FD_ZERO(&fds);
-
- /* wait for array_state to be clean */
- while (1) {
- rv = read(state_fd, buf, sizeof(buf));
- if (rv < 0)
- break;
- if (sysfs_match_word(buf, clean_states) <= 4)
- break;
- FD_SET(state_fd, &fds);
- rv = select(state_fd + 1, NULL, NULL, &fds, &tm);
- if (rv < 0 && errno != EINTR)
- break;
- lseek(state_fd, 0, SEEK_SET);
- }
- if (rv < 0)
- rv = 1;
- else if (fping_monitor(sock) == 0 ||
- ping_monitor(mdi->text_version) == 0) {
- /* we need to ping to close the window between array
- * state transitioning to clean and the metadata being
- * marked clean
- */
- rv = 0;
- } else
- rv = 1;
- if (rv && verbose)
- fprintf(stderr, Name ": Error waiting for %s to be clean\n",
- dev);
-
- /* restore the original safe_mode_delay */
- sysfs_set_safemode(mdi, mdi->safe_mode_delay);
- close(state_fd);
- }
-
- sysfs_free(mdi);
- close(fd);
-
- return rv;
+ if (!sysfs_attribute_available(sra, NULL, "sync_action"))
+ return 1; /* no sync_action == frozen */
+ if (sysfs_get_str(sra, NULL, "sync_action", buf, 20) <= 0)
+ return 0;
+ if (strcmp(buf, "frozen\n") == 0)
+ /* Already frozen */
+ return 0;
+ if (strcmp(buf, "idle\n") != 0)
+ return -1;
+ if (sysfs_set_str(sra, NULL, "sync_action", "frozen") < 0)
+ return 0;
+ return 1;