From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:55539) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZjiOj-00057e-QG for qemu-devel@nongnu.org; Wed, 07 Oct 2015 02:40:23 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ZjiOi-0000GR-CK for qemu-devel@nongnu.org; Wed, 07 Oct 2015 02:40:21 -0400 References: <1443161858-20533-1-git-send-email-wency@cn.fujitsu.com> From: Wen Congyang Message-ID: <5614BE37.8070107@cn.fujitsu.com> Date: Wed, 7 Oct 2015 14:39:51 +0800 MIME-Version: 1.0 In-Reply-To: <1443161858-20533-1-git-send-email-wency@cn.fujitsu.com> Content-Type: text/plain; charset="windows-1252" Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] [PATCH v10 00/10] Block replication for continuous checkpoints List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu devel , Fam Zheng , Max Reitz , Paolo Bonzini , Stefan Hajnoczi Cc: Kevin Wolf , qemu block , Jiang Yunhong , Dong Eddie , "Dr. David Alan Gilbert" , "Michael R. Hines" , Yang Hongyang Ping... On 09/25/2015 02:17 PM, Wen Congyang wrote: > Block replication is a very important feature which is used for > continuous checkpoints(for example: COLO). > > You can the detailed information about block replication from here: > http://wiki.qemu.org/Features/BlockReplication > > Usage: > Please refer to docs/block-replication.txt > > This patch series is based on the following patch series: > 1. http://lists.nongnu.org/archive/html/qemu-devel/2015-09/msg05514.html > 2. http://lists.nongnu.org/archive/html/qemu-devel/2015-09/msg04900.html > > You can get the patch here: > https://github.com/coloft/qemu/tree/wency/block-replication-v10 > > You can get the patch with framework here: > https://github.com/coloft/qemu/tree/wency/colo_framework_v9.5 > > TODO: > 1. Continuous block replication. It will be started after basic functions > are accepted. > > Changs Log: > V10: > 1. Use blockdev-remove-medium and blockdev-insert-medium to replace backing > reference. > 2. Address the comments from Eric Blake > V9: > 1. Update the error messages > 2. Rebase to the newest qemu > 3. Split child add/delete support. These patches are sent in another patchset. > V8: > 1. Address Alberto Garcia's comments > V7: > 1. Implement adding/removing quorum child. Remove the option non-connect. > 2. Simplify the backing refrence option according to Stefan Hajnoczi's suggestion > V6: > 1. Rebase to the newest qemu. > V5: > 1. Address the comments from Gong Lei > 2. Speed the failover up. The secondary vm can take over very quickly even > if there are too many I/O requests. > V4: > 1. Introduce a new driver replication to avoid touch nbd and qcow2. > V3: > 1: use error_setg() instead of error_set() > 2. Add a new block job API > 3. Active disk, hidden disk and nbd target uses the same AioContext > 4. Add a testcase to test new hbitmap API > V2: > 1. Redesign the secondary qemu(use image-fleecing) > 2. Use Error objects to return error message > 3. Address the comments from Max Reitz and Eric Blake > > Wen Congyang (10): > allow writing to the backing file > Backup: clear all bitmap when doing block checkpoint > Allow creating backup jobs when opening BDS > block: make bdrv_put_ref_bh_schedule() as a public API > docs: block replication's description > Add new block driver interfaces to control block replication > quorum: implement block driver interfaces for block replication > Implement new driver for block replication > support replication driver in blockdev-add > Add a new API to start/stop replication, do checkpoint to all BDSes > > block.c | 192 +++++++++++++++++- > block/Makefile.objs | 3 +- > block/backup.c | 14 ++ > block/quorum.c | 77 ++++++++ > block/replication.c | 471 +++++++++++++++++++++++++++++++++++++++++++++ > blockdev.c | 37 +--- > blockjob.c | 11 ++ > docs/block-replication.txt | 259 +++++++++++++++++++++++++ > include/block/block.h | 10 + > include/block/block_int.h | 14 ++ > include/block/blockjob.h | 12 ++ > qapi/block-core.json | 34 +++- > 12 files changed, 1098 insertions(+), 36 deletions(-) > create mode 100644 block/replication.c > create mode 100644 docs/block-replication.txt >