This additional notification to 'array_state' is needed to allow the monitor
application to learn about stop events via sysfs. The
sysfs_notify("sync_action") call that comes at the end of do_md_stop() (via
md_new_event) is insufficient since the 'sync_action' attribute has been
removed by this point.
(Seems like a sysfs-notify-on-removal patch is a better fix. Currently removal
updates the event count but does not wake up waiters)
Signed-off-by: Dan Williams <dan.j.williams@xxxxxxxxx>
---
drivers/md/md.c | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/drivers/md/md.c b/drivers/md/md.c
index ad53035..606c8ee 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -3693,6 +3693,9 @@ static int do_md_stop(mddev_t * mddev, int mode)
module_put(mddev->pers->owner);
mddev->pers = NULL;
+ /* tell userspace to handle 'inactive' */
+ if (mddev->external)
+ sysfs_notify(&mddev->kobj, NULL, "array_state");
set_capacity(disk, 0);
mddev->changed = 1;
--
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