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Message-Id: <1071015043437.5489@suse.de> Date: Mon, 15 Oct 2007 14:34:37 +1000 From: NeilBrown <neilb@...e.de> To: Andrew Morton <akpm@...ux-foundation.org> Cc: Iustin Pop <iusty@...24.org> Subject: [PATCH 003 of 5] md: Expose the degraded status of an assembled array through sysfs From: Iustin Pop <iusty@...24.org> 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 <iusty@...24.org> Signed-off-by: Neil Brown <neilb@...e.de> ### 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 majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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