Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751636AbbGMIjZ (ORCPT ); Mon, 13 Jul 2015 04:39:25 -0400 Received: from victor.provo.novell.com ([137.65.250.26]:40319 "EHLO prv3-mh.provo.novell.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751139AbbGMIjX (ORCPT ); Mon, 13 Jul 2015 04:39:23 -0400 From: Nick Wang To: nwang@suse.com Cc: philipp.reisner@linbit.com, Lars Ellenberg , drbd-dev@lists.linbit.com, linux-kernel@vger.kernel.org Subject: [Patch v2 00/10] Zero out devices instead of initial full sync Date: Mon, 13 Jul 2015 16:38:54 +0800 Message-Id: <1436776744-3135-1-git-send-email-nwang@suse.com> X-Mailer: git-send-email 1.8.4.5 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2574 Lines: 68 Patch set is based on drbd-8.4 859e34a9, have already compiled/tested against SLES12. If this feature can be merged into upstream, please ignore v1, since v1 may caused pingACK timeout when zeroing out large device. Compare to v1, changes are as follow: 1. Using drbd_device_post_work to zero out device as background task, so that it won't block pingACK when zeroing out large device. 2. Fix bug of won't update peer node status if it finished zeroing out earier. 3. Change some functions from file drbd_receive.c to drbd_worker.c and reorder the patch set. Full sync for drbd initial usually take a long time, especically when network become the bottleneck of the syncing. Simply skip the full sync with "--clear-bitmap" may not the perfect solution for all the cases, like using the bare device(no filesystem) to work,etc database,vm... This patche set can be used to zero out devices locally instead of a full sync to make the consistent block device. This approach can be useful when lack of network bandwidth to sync. The patches add one new option "--zap-devices" to "new-current-uuid" to zero out devices. It will start zeroing out devices of both side. Nick Wang (10): drbd: Fix the wrong logic of move history. drbd: Add options zap_devices to new-current-uuid drbd: Add a function to zero out drbd backing device. drbd: New packet P_ZERO_OUT. drbd: Functions to notify peer node to start zeroing out and zero out finished. drbd: Wapper for zeroing out device by worker. drbd: Add flag for drbd device work. drbd: Function to work with packet P_ZERO_OUT. drbd: Receive zero out command from peer node. drbd: Handle new-current-uuid --zap-devices. 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 | 13 ++++++++ drbd/drbd_main.c | 51 ++++++++++++++++++++++++++-- drbd/drbd_nl.c | 21 +++++++++++- drbd/drbd_protocol.h | 1 + drbd/drbd_receiver.c | 69 ++++++++++++++++++++++++++++++++++++++ drbd/drbd_worker.c | 90 ++++++++++++++++++++++++++++++++++++++++++++++++++ drbd/linux/drbd_genl.h | 1 + 7 files changed, 243 insertions(+), 3 deletions(-) -- 1.8.4.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/