return n;
}
-
int get_resync_start(struct active_array *a)
{
char buf[30];
return 1;
}
-static int attr_match(const char *attr, const char *str)
-{
- /* See if attr, read from a sysfs file, matches
- * str. They must either be the same, or attr can
- * have a trailing newline or comma
- */
- while (*attr && *str && *attr == *str) {
- attr++;
- str++;
- }
-
- if (*str || (*attr && *attr != ',' && *attr != '\n'))
- return 0;
- return 1;
-}
-
-static int match_word(const char *word, char **list)
-{
- int n;
- for (n=0; list[n]; n++)
- if (attr_match(word, list[n]))
- break;
- return n;
-}
static enum array_state read_state(int fd)
{
if (n <= 0)
return bad_word;
- return (enum array_state) match_word(buf, array_states);
+ return (enum array_state) sysfs_match_word(buf, array_states);
}
static enum sync_action read_action( int fd)
if (n <= 0)
return bad_action;
- return (enum sync_action) match_word(buf, sync_actions);
+ return (enum sync_action) sysfs_match_word(buf, sync_actions);
}
int read_dev_state(int fd)
cp = buf;
while (cp) {
- if (attr_match(cp, "faulty"))
+ if (sysfs_attr_match(cp, "faulty"))
rv |= DS_FAULTY;
- if (attr_match(cp, "in_sync"))
+ if (sysfs_attr_match(cp, "in_sync"))
rv |= DS_INSYNC;
- if (attr_match(cp, "write_mostly"))
+ if (sysfs_attr_match(cp, "write_mostly"))
rv |= DS_WRITE_MOSTLY;
- if (attr_match(cp, "spare"))
+ if (sysfs_attr_match(cp, "spare"))
rv |= DS_SPARE;
- if (attr_match(cp, "blocked"))
+ if (sysfs_attr_match(cp, "blocked"))
rv |= DS_BLOCKED;
cp = strchr(cp, ',');
if (cp)
a->next_state = active;
}
if (a->curr_state == active_idle) {
- /* Set array to 'clean' FIRST, then
- * a->ss->mark_clean(a, ~0ULL);
- * just ignore for now.
+ /* Set array to 'clean' FIRST, then mark clean
+ * in the metadata
*/
+ a->next_state = clean;
+ }
+ if (a->curr_state == clean) {
+ get_resync_start(a);
+ a->container->ss->set_array_state(a, 1);
}
if (a->curr_state == readonly) {
- /* Well, I'm ready to handle things, so
- * read-auto is OK. FIXME what if we really want
- * readonly ???
+ /* Well, I'm ready to handle things. If readonly
+ * wasn't requested, transition to read-auto.
*/
- get_resync_start(a);
- if (a->resync_start == ~0ULL) {
- a->next_state = read_auto; /* array is clean */
- /* give the metadata a chance to force active if
- * we have some recovery to do. metadata sets
- * resync_start to !MaxSector in this case
- */
- a->container->ss->set_array_state(a, 1);
- }
- if (a->resync_start != ~0ULL) {
- a->container->ss->set_array_state(a, 0);
- a->next_state = active;
+ char buf[64];
+ read_attr(buf, sizeof(buf), a->metadata_fd);
+ if (strncmp(buf, "external:-", 10) == 0) {
+ /* explicit request for readonly array. Leave it alone */
+ ;
+ } else {
+ get_resync_start(a);
+ if (a->container->ss->set_array_state(a, 2))
+ a->next_state = read_auto; /* array is clean */
+ else
+ a->next_state = active; /* Now active for recovery etc */
}
}
* Just check if we need to fiddle spares.
*/
get_resync_start(a);
- a->container->ss->set_array_state(a, 0);
+ a->container->ss->set_array_state(a, a->curr_state <= clean);
check_degraded = 1;
}
}
}
+ /* Check for failures and if found:
+ * 1/ Record the failure in the metadata and unblock the device.
+ * FIXME update the kernel to stop notifying on failed drives when
+ * the array is readonly and we have cleared 'blocked'
+ * 2/ Try to remove the device if the array is writable, or can be
+ * made writable.
+ */
for (mdi = a->info.devs ; mdi ; mdi = mdi->next) {
if (mdi->curr_state & DS_FAULTY) {
a->container->ss->set_disk(a, mdi->disk.raid_disk,
mdi->curr_state);
check_degraded = 1;
- mdi->next_state = DS_REMOVE;
+ mdi->next_state |= DS_UNBLOCK;
+ if (a->curr_state == read_auto) {
+ a->container->ss->set_array_state(a, 0);
+ a->next_state = active;
+ }
+ if (a->curr_state > readonly)
+ mdi->next_state |= DS_REMOVE;
}
}
a->container->ss->sync_metadata(a->container);
- dprintf("%s: update[%d]: (", __func__, a->info.container_member);
+ dprintf("%s(%d): state:%s action:%s next(", __func__, a->info.container_member,
+ array_states[a->curr_state], sync_actions[a->curr_action]);
/* Effect state changes in the array */
if (a->next_state != bad_word) {
}
if (a->next_action != bad_action) {
write_attr(sync_actions[a->next_action], a->action_fd);
- dprintf(" action:%s", array_states[a->next_state]);
+ dprintf(" action:%s", sync_actions[a->next_action]);
}
for (mdi = a->info.devs; mdi ; mdi = mdi->next) {
- if (mdi->next_state == DS_REMOVE && mdi->state_fd >= 0) {
+ if (mdi->next_state & DS_UNBLOCK) {
+ dprintf(" %d:-blocked", mdi->disk.raid_disk);
+ write_attr("-blocked", mdi->state_fd);
+ }
+
+ if ((mdi->next_state & DS_REMOVE) && mdi->state_fd >= 0) {
int remove_result;
- write_attr("-blocked", mdi->state_fd);
/* the kernel may not be able to immediately remove the
* disk, we can simply wait until the next event to try
* again.
*/
- dprintf(" %d:-blocked", mdi->disk.raid_disk);
remove_result = write_attr("remove", mdi->state_fd);
if (remove_result > 0) {
dprintf(" %d:removed", mdi->disk.raid_disk);
projects / thirdparty / mdadm.git / blobdiff