From 1090c056c5eb6d5335cceb381683e77ac24c71ab Mon Sep 17 00:00:00 2001 From: Lars Ellenberg Date: Mon, 19 Jul 2010 17:41:04 +0200 Subject: drbd: drbd_md_sync before calling user space helpers Just in case we have some pending meta data changes to sync, do it before we call our userland helper, as that may take some time, or even cause a hard reboot. Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- drivers/block/drbd/drbd_nl.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'drivers/block') diff --git a/drivers/block/drbd/drbd_nl.c b/drivers/block/drbd/drbd_nl.c index e0061a906ba8..5b30f90cab3e 100644 --- a/drivers/block/drbd/drbd_nl.c +++ b/drivers/block/drbd/drbd_nl.c @@ -172,6 +172,10 @@ int drbd_khelper(struct drbd_conf *mdev, char *cmd) put_net_conf(mdev); } + /* The helper may take some time. + * write out any unsynced meta data changes now */ + drbd_md_sync(mdev); + dev_info(DEV, "helper command: %s %s %s\n", usermode_helper, cmd, mb); drbd_bcast_ev_helper(mdev, cmd); -- cgit v1.2.3