diff options
Diffstat (limited to 'Monitor.c')
| -rw-r--r-- | Monitor.c | 88 |
1 files changed, 88 insertions, 0 deletions
@@ -628,3 +628,91 @@ int Wait(char *dev) mdstat_wait(5); } } + +static char *clean_states[] = { + "clear", "inactive", "readonly", "read-auto", "clean", NULL }; + +int WaitClean(char *dev) +{ + int fd; + struct mdinfo *mdi; + int rv = 1; + int devnum; + + fd = open(dev, O_RDONLY); + if (fd < 0) { + fprintf(stderr, Name ": Couldn't open %s: %s\n", dev, strerror(errno)); + return 1; + } + + devnum = fd2devnum(fd); + mdi = sysfs_read(fd, devnum, GET_VERSION|GET_LEVEL|GET_SAFEMODE); + if (!mdi) { + fprintf(stderr, Name ": Failed to read sysfs attributes for " + "%s\n", dev); + close(fd); + return 0; + } + + switch(mdi->array.level) { + case LEVEL_LINEAR: + case LEVEL_MULTIPATH: + case 0: + /* safemode delay is irrelevant for these levels */ + rv = 0; + + } + + /* for internal metadata the kernel handles the final clean + * transition, containers can never be dirty + */ + if (!is_subarray(mdi->text_version)) + rv = 0; + + /* safemode disabled ? */ + if (mdi->safe_mode_delay == 0) + rv = 0; + + if (rv) { + int state_fd = sysfs_open(fd2devnum(fd), NULL, "array_state"); + unsigned long secs; + char buf[20]; + + secs = mdi->safe_mode_delay / 1000; + if (mdi->safe_mode_delay - secs * 1000) + secs++; + secs *= 2; + + for (; secs; secs--) { + rv = read(state_fd, buf, sizeof(buf)); + if (rv < 0) + break; + if (sysfs_match_word(buf, clean_states) <= 4) + break; + sleep(1); + lseek(state_fd, 0, SEEK_SET); + } + if (rv < 0) + rv = 1; + else if (secs) { + /* we need to ping to close the window between array + * state transitioning to clean and the metadata being + * marked clean + */ + if (ping_monitor(mdi->text_version) == 0) + rv = 0; + } + if (rv) + fprintf(stderr, Name ": Error waiting for %s to be clean\n", + dev); + + close(state_fd); + } + + sysfs_free(mdi); + close(fd); + + return rv; +} + + |