[PATCH 003 of 5] md: Expose the degraded status of an assembled array through sysfs

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



From: Iustin Pop <[email protected]>

The 'degraded' attribute is useful to quickly determine if the array is
degraded, instead of parsing 'mdadm -D' output or relying on the other
techniques (number of working devices against number of defined devices, etc.).
The md code already keeps track of this attribute, so it's useful to export it.

Signed-off-by: Iustin Pop <[email protected]>
Signed-off-by: Neil Brown <[email protected]>

### Diffstat output
 ./drivers/md/md.c |    7 +++++++
 1 file changed, 7 insertions(+)

diff .prev/drivers/md/md.c ./drivers/md/md.c
--- .prev/drivers/md/md.c	2007-10-15 14:06:32.000000000 +1000
+++ ./drivers/md/md.c	2007-10-15 14:06:52.000000000 +1000
@@ -2833,6 +2833,12 @@ sync_max_store(mddev_t *mddev, const cha
 static struct md_sysfs_entry md_sync_max =
 __ATTR(sync_speed_max, S_IRUGO|S_IWUSR, sync_max_show, sync_max_store);
 
+static ssize_t
+degraded_show(mddev_t *mddev, char *page)
+{
+	return sprintf(page, "%d\n", mddev->degraded);
+}
+static struct md_sysfs_entry md_degraded = __ATTR_RO(degraded);
 
 static ssize_t
 sync_speed_show(mddev_t *mddev, char *page)
@@ -2976,6 +2982,7 @@ static struct attribute *md_redundancy_a
 	&md_suspend_lo.attr,
 	&md_suspend_hi.attr,
 	&md_bitmap.attr,
+	&md_degraded.attr,
 	NULL,
 };
 static struct attribute_group md_redundancy_group = {
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Stuff]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]     [Linux Resources]
  Powered by Linux