From ece5cff0da9e696c360fff592cb5f51b6419e4d6 Mon Sep 17 00:00:00 2001 From: NeilBrown Date: Mon, 14 Dec 2009 12:49:56 +1100 Subject: md: Support write-intent bitmaps with externally managed metadata. In this case, the metadata needs to not be in the same sector as the bitmap. md will not read/write any bitmap metadata. Config must be done via sysfs and when a recovery makes the array non-degraded again, writing 'true' to 'bitmap/can_clear' will allow bits in the bitmap to be cleared again. Signed-off-by: NeilBrown --- drivers/md/md.h | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/md/md.h') diff --git a/drivers/md/md.h b/drivers/md/md.h index fce02073f1a4..d9138885b87f 100644 --- a/drivers/md/md.h +++ b/drivers/md/md.h @@ -296,6 +296,7 @@ struct mddev_s unsigned long chunksize; unsigned long daemon_sleep; /* how many seconds between updates? */ unsigned long max_write_behind; /* write-behind mode */ + int external; } bitmap_info; struct list_head all_mddevs; -- cgit v1.2.3