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[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>
This commit is contained in:
NeilBrown 2005-11-08 21:39:44 -08:00 committed by Linus Torvalds
parent 787453c239
commit 7eec314d75
1 changed files with 28 additions and 19 deletions
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33
drivers/md/md.c
View File

@ -1746,9 +1746,9 @@ raid_disks_show(mddev_t *mddev, char *page)
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)) {
@ -1765,20 +1765,28 @@ md_show_scan(mddev_t *mddev, char *page)
}
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, "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)
@ -1786,6 +1794,7 @@ md_store_scan(mddev_t *mddev, const char *page, size_t len)
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 @@ mismatch_cnt_show(mddev_t *mddev, char *page)
}
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