[PATCH] md: improve 'scan_mode' and rename it to 'sync_action'
The current sync_action for an array can be one of
idle - nothing happening
resync - reduncancy being recalcualted
recover - missing device being recoverred to spare
check - user initiated check of redundancy
repair - like resync but user-initiated and ignores
bitmap optimisation.
Each of these strings can also be written to the 'sync_action' file to cause
that action to happen (if appropriate).
While 'sync' is not technically correct, as a recovery is *not* a 'sync', I
think it is the most servicable word here. Also 'action' is a strong word
than 'mode'.
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/drivers/md/md.c b/drivers/md/md.c
index 097ae1b..023aecd 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -1746,9 +1746,9 @@
static struct md_sysfs_entry md_raid_disks = __ATTR_RO(raid_disks);
static ssize_t
-md_show_scan(mddev_t *mddev, char *page)
+action_show(mddev_t *mddev, char *page)
{
- char *type = "none";
+ char *type = "idle";
if (test_bit(MD_RECOVERY_RUNNING, &mddev->recovery) ||
test_bit(MD_RECOVERY_NEEDED, &mddev->recovery)) {
if (test_bit(MD_RECOVERY_SYNC, &mddev->recovery)) {
@@ -1765,27 +1765,36 @@
}
static ssize_t
-md_store_scan(mddev_t *mddev, const char *page, size_t len)
+action_store(mddev_t *mddev, const char *page, size_t len)
{
- int canscan=0;
+ if (!mddev->pers || !mddev->pers->sync_request)
+ return -EINVAL;
+
+ if (strcmp(page, "idle")==0 || strcmp(page, "idle\n")==0) {
+ if (mddev->sync_thread) {
+ set_bit(MD_RECOVERY_INTR, &mddev->recovery);
+ md_unregister_thread(mddev->sync_thread);
+ mddev->sync_thread = NULL;
+ mddev->recovery = 0;
+ }
+ return len;
+ }
if (test_bit(MD_RECOVERY_RUNNING, &mddev->recovery) ||
test_bit(MD_RECOVERY_NEEDED, &mddev->recovery))
return -EBUSY;
-
- if (mddev->pers && mddev->pers->sync_request)
- canscan=1;
-
- if (!canscan)
- return -EINVAL;
-
- if (strcmp(page, "check")==0 || strcmp(page, "check\n")==0)
- set_bit(MD_RECOVERY_CHECK, &mddev->recovery);
- else if (strcmp(page, "repair")!=0 && strcmp(page, "repair\n")!=0)
- return -EINVAL;
- set_bit(MD_RECOVERY_REQUESTED, &mddev->recovery);
- set_bit(MD_RECOVERY_SYNC, &mddev->recovery);
- set_bit(MD_RECOVERY_NEEDED, &mddev->recovery);
+ if (strcmp(page, "resync")==0 || strcmp(page, "resync\n")==0 ||
+ strcmp(page, "recover")==0 || strcmp(page, "recover\n")==0)
+ set_bit(MD_RECOVERY_NEEDED, &mddev->recovery);
+ else {
+ if (strcmp(page, "check")==0 || strcmp(page, "check\n")==0)
+ set_bit(MD_RECOVERY_CHECK, &mddev->recovery);
+ else if (strcmp(page, "repair")!=0 && strcmp(page, "repair\n")!=0)
+ return -EINVAL;
+ set_bit(MD_RECOVERY_REQUESTED, &mddev->recovery);
+ set_bit(MD_RECOVERY_SYNC, &mddev->recovery);
+ set_bit(MD_RECOVERY_NEEDED, &mddev->recovery);
+ }
md_wakeup_thread(mddev->thread);
return len;
}
@@ -1798,7 +1807,7 @@
}
static struct md_sysfs_entry
-md_scan_mode = __ATTR(scan_mode, S_IRUGO|S_IWUSR, md_show_scan, md_store_scan);
+md_scan_mode = __ATTR(sync_action, S_IRUGO|S_IWUSR, action_show, action_store);
static struct md_sysfs_entry
