From 57737adc965e45fcb03662fe6f93f6efb19e2c0a Mon Sep 17 00:00:00 2001 From: Philipp Reisner Date: Wed, 23 Oct 2013 10:59:17 +0200 Subject: drbd: Fix adding of new minors with freshly created meta data Online adding of new minors with freshly created meta data to an resource with an established connection failed, with a wrong state transition on one side on one side of the new minor. Freshly created meta-data has a la_size (last agreed size) of 0. When we online add such devices, the code wrongly got into the code path for resyncing new storage that was added while the disk was detached. Fixed that by making the GREW from ZERO a special case. Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg Signed-off-by: Jens Axboe --- drivers/block/drbd/drbd_int.h | 3 ++- drivers/block/drbd/drbd_nl.c | 2 +- 2 files changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/block/drbd/drbd_int.h b/drivers/block/drbd/drbd_int.h index 2d7f608d181..0e06f0c5dd1 100644 --- a/drivers/block/drbd/drbd_int.h +++ b/drivers/block/drbd/drbd_int.h @@ -1474,7 +1474,8 @@ enum determine_dev_size { DS_ERROR = -1, DS_UNCHANGED = 0, DS_SHRUNK = 1, - DS_GREW = 2 + DS_GREW = 2, + DS_GREW_FROM_ZERO = 3, }; extern enum determine_dev_size drbd_determine_dev_size(struct drbd_conf *, enum dds_flags, struct resize_parms *) __must_hold(local); diff --git a/drivers/block/drbd/drbd_nl.c b/drivers/block/drbd/drbd_nl.c index 8cc1e640f48..37dad18ba15 100644 --- a/drivers/block/drbd/drbd_nl.c +++ b/drivers/block/drbd/drbd_nl.c @@ -955,7 +955,7 @@ drbd_determine_dev_size(struct drbd_conf *mdev, enum dds_flags flags, struct res } if (size > la_size_sect) - rv = DS_GREW; + rv = la_size_sect ? DS_GREW : DS_GREW_FROM_ZERO; if (size < la_size_sect) rv = DS_SHRUNK; -- cgit v1.2.3-70-g09d2