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authorNeilBrown <neilb@suse.de>2005-11-08 21:39:40 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2005-11-09 07:56:39 -0800
commit411036fa1924f5e5b0f7f9d04ae5d8cdc72fb839 (patch)
treed63b4380ce3e6fc55a9ea272512ca430f840fe22 /drivers/md
parent96de1e663cda65ba9275afb1bc007f34e5068ba1 (diff)
downloadop-kernel-dev-411036fa1924f5e5b0f7f9d04ae5d8cdc72fb839.zip
op-kernel-dev-411036fa1924f5e5b0f7f9d04ae5d8cdc72fb839.tar.gz
[PATCH] md: split off some md attributes in sysfs to a separate group
Some, but not all, md array support data redundancy and hence support checking and restoring that redundancy (resync, rebuild). Some attributes apply specifically to functions involving this redundancy, and so should only appear for md arrays for which they are meaningful. i.e. they should not appear for raid0, linear, multpath, faulty. This patch separates these into a distinct group and creates the group only if the personality supports sync_request. Signed-off-by: Neil Brown <neilb@suse.de> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/md')
-rw-r--r--drivers/md/md.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/md/md.c b/drivers/md/md.c
index b2d8813..292dad3 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -1807,10 +1807,19 @@ md_mismatches = __ATTR_RO(mismatch_cnt);
static struct attribute *md_default_attrs[] = {
&md_level.attr,
&md_raid_disks.attr,
+ NULL,
+};
+
+static struct attribute *md_redundancy_attrs[] = {
&md_scan_mode.attr,
&md_mismatches.attr,
NULL,
};
+static struct attribute_group md_redundancy_group = {
+ .name = NULL,
+ .attrs = md_redundancy_attrs,
+};
+
static ssize_t
md_attr_show(struct kobject *kobj, struct attribute *attr, char *page)
@@ -2047,6 +2056,8 @@ static int do_md_run(mddev_t * mddev)
bitmap_destroy(mddev);
return err;
}
+ if (mddev->pers->sync_request)
+ sysfs_create_group(&mddev->kobj, &md_redundancy_group);
atomic_set(&mddev->writes_pending,0);
mddev->safemode = 0;
mddev->safemode_timer.function = md_safemode_timeout;
@@ -2155,6 +2166,9 @@ static int do_md_stop(mddev_t * mddev, int ro)
set_disk_ro(disk, 0);
blk_queue_make_request(mddev->queue, md_fail_request);
mddev->pers->stop(mddev);
+ if (mddev->pers->sync_request)
+ sysfs_remove_group(&mddev->kobj, &md_redundancy_group);
+
module_put(mddev->pers->owner);
mddev->pers = NULL;
if (mddev->ro)
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