diff options
| author |   Philipp Reisner <philipp.reisner@linbit.com> | 2013-03-27 14:08:36 +0100 |
|---|---|---|
| committer |   Jens Axboe <axboe@kernel.dk> | 2013-03-28 10:10:24 -0600 |
| commit | 9376d9f8b97f20df5d30c83713652c3118b31534 (patch) | |
| tree | 279e6afef66121afe7dc86564fb3249ae7b36ab8 /drivers/block | |
| parent | drbd: abort start of resync early, if it raced with connection breakage (diff) | |
| download | linux-dev-9376d9f8b97f20df5d30c83713652c3118b31534.tar.xz linux-dev-9376d9f8b97f20df5d30c83713652c3118b31534.zip | |
drbd: move invalidating the whole bitmap out of after_state ch()
To avoid other state change requests, after passing through
sanitize_state(), to be mistaken for an invalidate,
move the "set all bits as out-of-sync" into the invalidate path.
Make invalidate and invalidate-remote behave consistently wrt.
current connection state (need either an established replication link,
or really be disconnected). Also mention that in the documentation.
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/block')
| -rw-r--r-- | drivers/block/drbd/drbd_nl.c | 36 | ||||
| -rw-r--r-- | drivers/block/drbd/drbd_state.c | 7 |
2 files changed, 20 insertions, 23 deletions
diff --git a/drivers/block/drbd/drbd_nl.c b/drivers/block/drbd/drbd_nl.c index 42fda4ae2f87..c49bda7918b3 100644 --- a/drivers/block/drbd/drbd_nl.c +++ b/drivers/block/drbd/drbd_nl.c @@ -2448,19 +2448,23 @@ int drbd_adm_invalidate(struct sk_buff *skb, struct genl_info *info) retcode = _drbd_request_state(mdev, NS(conn, C_STARTING_SYNC_T), CS_ORDERED); - if (retcode < SS_SUCCESS && retcode != SS_NEED_CONNECTION) - retcode = drbd_request_state(mdev, NS(conn, C_STARTING_SYNC_T)); - - while (retcode == SS_NEED_CONNECTION) { - spin_lock_irq(&mdev->tconn->req_lock); - if (mdev->state.conn < C_CONNECTED) - retcode = _drbd_set_state(_NS(mdev, disk, D_INCONSISTENT), CS_VERBOSE, NULL); - spin_unlock_irq(&mdev->tconn->req_lock); - - if (retcode != SS_NEED_CONNECTION) - break; - - retcode = drbd_request_state(mdev, NS(conn, C_STARTING_SYNC_T)); + /* If that did not work, try again, + * but log failures this time (implicit CS_VERBOSE). + * + * If we happen to be C_STANDALONE R_SECONDARY, + * just change to D_INCONSISTENT, and set all bits in the bitmap. + * Otherwise, we just fail, to avoid races with the resync handshake. + */ + if (retcode < SS_SUCCESS) { + if (mdev->state.conn == C_STANDALONE && mdev->state.role == R_SECONDARY) { + retcode = drbd_request_state(mdev, NS(disk, D_INCONSISTENT)); + if (retcode >= SS_SUCCESS) { + if (drbd_bitmap_io(mdev, &drbd_bmio_set_n_write, + "set_n_write from invalidate", BM_LOCKED_MASK)) + retcode = ERR_IO_MD_DISK; + } + } else + retcode = drbd_request_state(mdev, NS(conn, C_STARTING_SYNC_T)); } drbd_resume_io(mdev); @@ -2517,9 +2521,9 @@ int drbd_adm_invalidate_peer(struct sk_buff *skb, struct genl_info *info) retcode = _drbd_request_state(mdev, NS(conn, C_STARTING_SYNC_S), CS_ORDERED); if (retcode < SS_SUCCESS) { - if (retcode == SS_NEED_CONNECTION && mdev->state.role == R_PRIMARY) { - /* The peer will get a resync upon connect anyways. - * Just make that into a full resync. */ + if (mdev->state.conn == C_STANDALONE && mdev->state.role == R_PRIMARY) { + /* The peer will get a resync upon connect anyways. Just make that + into a full resync. */ retcode = drbd_request_state(mdev, NS(pdsk, D_INCONSISTENT)); if (retcode >= SS_SUCCESS) { if (drbd_bitmap_io(mdev, &drbd_bmio_set_susp_al, diff --git a/drivers/block/drbd/drbd_state.c b/drivers/block/drbd/drbd_state.c index 0fe220cfb9e9..3bc686f48b53 100644 --- a/drivers/block/drbd/drbd_state.c +++ b/drivers/block/drbd/drbd_state.c @@ -1377,13 +1377,6 @@ static void after_state_ch(struct drbd_conf *mdev, union drbd_state os, &drbd_bmio_set_n_write, &abw_start_sync, "set_n_write from StartingSync", BM_LOCKED_TEST_ALLOWED); - /* We are invalidating our self... */ - if (os.conn < C_CONNECTED && ns.conn < C_CONNECTED && - os.disk > D_INCONSISTENT && ns.disk == D_INCONSISTENT) - /* other bitmap operation expected during this phase */ - drbd_queue_bitmap_io(mdev, &drbd_bmio_set_n_write, NULL, - "set_n_write from invalidate", BM_LOCKED_MASK); - /* first half of local IO error, failure to attach, * or administrative detach */ if (os.disk != D_FAILED && ns.disk == D_FAILED) { |