From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from prv3-mh.provo.novell.com (victor.provo.novell.com [137.65.250.26]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by mail09.linbit.com (LINBIT Mail Daemon) with ESMTPS id E7D2010556D9 for ; Mon, 13 Jul 2015 10:39:54 +0200 (CEST) From: Nick Wang To: nwang@suse.com Date: Mon, 13 Jul 2015 16:39:00 +0800 Message-Id: <1436776744-3135-7-git-send-email-nwang@suse.com> In-Reply-To: <1436776744-3135-1-git-send-email-nwang@suse.com> References: <1436776744-3135-1-git-send-email-nwang@suse.com> Cc: linux-kernel@vger.kernel.org, Lars Ellenberg , philipp.reisner@linbit.com, drbd-dev@lists.linbit.com Subject: [Drbd-dev] [Patch v2 06/10] drbd: Wapper for zeroing out device by worker List-Id: "*Coordination* of development, patches, contributions -- *Questions* \(even to developers\) go to drbd-user, please." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Wapper functions for drbd_device_post_work to start zeroing out device. Change state when both node finish zeroing. Signed-off-by: Nick Wang CC: Philipp Reisner CC: Lars Ellenberg CC: drbd-dev@lists.linbit.com CC: linux-kernel@vger.kernel.org --- drbd/drbd_int.h | 2 ++ drbd/drbd_worker.c | 63 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 65 insertions(+) diff --git a/drbd/drbd_int.h b/drbd/drbd_int.h index f43f957..dd680a9 100644 --- a/drbd/drbd_int.h +++ b/drbd/drbd_int.h @@ -1670,6 +1670,8 @@ extern bool drbd_rs_c_min_rate_throttle(struct drbd_device *device); extern bool drbd_rs_should_slow_down(struct drbd_device *device, sector_t sector, bool throttle_if_app_is_waiting); extern int zero_out_local_device(struct drbd_device *device); +extern void require_zero_out_local_device(struct drbd_device *device); +extern void receive_zero_out_local_device(struct drbd_device *device); extern int drbd_submit_peer_request(struct drbd_device *, struct drbd_peer_request *, const unsigned, const int); diff --git a/drbd/drbd_worker.c b/drbd/drbd_worker.c index 50564f5..293aa27 100644 --- a/drbd/drbd_worker.c +++ b/drbd/drbd_worker.c @@ -1674,6 +1674,69 @@ int zero_out_local_device(struct drbd_device *device) device->ldev->known_size, GFP_NOIO, false); } +/** + * require_zero_out_local_device() + * @device: DRBD device. + * + * Description: + * Start to zero out local device. Update + * status if peer node (secondary) finished + * zeroing. + * +**/ +void require_zero_out_local_device(struct drbd_device *device) +{ + int zero_out_err = 0; + + zero_out_err = zero_out_local_device(device); + + if (zero_out_err) { + drbd_err(device, "Failed to zero out local device\n"); + set_bit(ZERO_FAIL, &device->flags); + drbd_chk_io_error(device, 1, DRBD_WRITE_ERROR); + } else { + drbd_info(device, "Finished zero out local device.\n"); + + if (test_and_clear_bit(ZERO_DONE, &device->flags)) { + spin_lock_irq(&device->resource->req_lock); + _drbd_set_state(_NS2(device, disk, D_UP_TO_DATE, + pdsk, D_UP_TO_DATE), CS_VERBOSE, NULL); + spin_unlock_irq(&device->resource->req_lock); + drbd_send_zero_out_finish(first_peer_device(device)); + } else if (test_and_clear_bit(ZERO_FAIL, &device->flags)) { + drbd_info(device, "Peer device has already failed on zero out\n"); + } else { + /* waiting for peer device finished */ + set_bit(ZERO_DONE, &device->flags); + } + } +} + +/** + * receive_zero_out_local_device() + * @device: DRBD device. + * + * Description: + * Start to zero out local device. + * Notify peer node the zeroing result. + * +**/ +void receive_zero_out_local_device(struct drbd_device *device) +{ + int zero_out_err = 0; + struct drbd_peer_device *const peer_device = first_peer_device(device); + + zero_out_err = zero_out_local_device(device); + if (zero_out_err) { + drbd_err(device, "Failed to zero out local device\n"); + drbd_send_zero_out_fail(peer_device); + drbd_chk_io_error(device, 1, DRBD_WRITE_ERROR); + } else { + drbd_info(device, "Finished zero out local device.\n"); + drbd_send_zero_out_ok(peer_device); + } +} + void start_resync_timer_fn(unsigned long data) { struct drbd_device *device = (struct drbd_device *) data; -- 1.8.4.5