From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:47070) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Yb0PF-0007u5-SH for qemu-devel@nongnu.org; Thu, 26 Mar 2015 01:32:39 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Yb0PB-0007DL-T3 for qemu-devel@nongnu.org; Thu, 26 Mar 2015 01:32:37 -0400 Received: from szxga01-in.huawei.com ([58.251.152.64]:34497) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Yb0PB-0007D3-4r for qemu-devel@nongnu.org; Thu, 26 Mar 2015 01:32:33 -0400 From: zhanghailiang Date: Thu, 26 Mar 2015 13:29:06 +0800 Message-ID: <1427347774-8960-1-git-send-email-zhang.zhanghailiang@huawei.com> MIME-Version: 1.0 Content-Type: text/plain Subject: [Qemu-devel] [RFC PATCH v4 00/28] COarse-grain LOck-stepping(COLO) Virtual Machines for Non-stop Service List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: lizhijian@cn.fujitsu.com, quintela@redhat.com, yunhong.jiang@intel.com, eddie.dong@intel.com, peter.huangpeng@huawei.com, dgilbert@redhat.com, zhanghailiang , arei.gonglei@huawei.com, amit.shah@redhat.com, david@gibson.dropbear.id.au This is the 4th version of COLO, here is only COLO frame part, include: VM checkpoint, failover, proxy API, block replication API, not include block replication. The block part has been sent by wencongyang: [RFC PATCH COLO v2 00/13] Block replication for continuous checkpoints Compared with last version, there aren't too much optimize and new functions. The main reason is that there is an known issue that still unsolved, we found some dirty pages which have been missed setting bit in corresponding bitmap. And it will trigger strange problem in VM. We hope to resolve it before add more codes. You can get the newest integrated qemu colo patches from github: https://github.com/coloft/qemu/commits/colo-v1.1 About how to test COLO, Please reference to the follow link. http://wiki.qemu.org/Features/COLO. Please review and test. Known issue still unsolved: (1) Some pages dirtied without setting its corresponding dirty-bitmap. Previous posted RFC patch series: http://lists.nongnu.org/archive/html/qemu-devel/2014-06/msg05567.html http://lists.nongnu.org/archive/html/qemu-devel/2014-09/msg04459.html https://lists.gnu.org/archive/html/qemu-devel/2015-02/msg04771.html TODO list: 1 Optimize the process of checkpoint, shorten the time-consuming: (Partly done, patch is not include into this series) 1) separate ram and device save/load process to reduce size of extra memory used during checkpoint 2) live migrate part of dirty pages to slave during sleep time. 2 Add more debug/stat info (Partly done, patch is not include into this series) include checkpoint count, proxy discompare count, downtime, number of live migrated pages, total sent pages, etc. 3 Strengthen failover 4 optimize proxy part, include proxy script. 5 The capability of continuous FT v4: - New block replication scheme (use image-fleecing for sencondary side) - Adress some comments from Eric Blake and Dave - Add commmand colo-set-checkpoint-period to set the time of periodic checkpoint - Add a delay (100ms) between continuous checkpoint requests to ensure VM run 100ms at least since last pause. v3: - use proxy instead of colo agent to compare network packets - add block replication - Optimize failover disposal - handle shutdown v2: - use QEMUSizedBuffer/QEMUFile as COLO buffer - colo support is enabled by default - add nic replication support - addressed comments from Eric Blake and Dr. David Alan Gilbert v1: - implement the frame of colo Wen Congyang (1): COLO: Add block replication into colo process zhanghailiang (27): configure: Add parameter for configure to enable/disable COLO support migration: Introduce capability 'colo' to migration COLO: migrate colo related info to slave migration: Integrate COLO checkpoint process into migration migration: Integrate COLO checkpoint process into loadvm COLO: Implement colo checkpoint protocol COLO: Add a new RunState RUN_STATE_COLO QEMUSizedBuffer: Introduce two help functions for qsb COLO: Save VM state to slave when do checkpoint COLO RAM: Load PVM's dirty page into SVM's RAM cache temporarily COLO VMstate: Load VM state into qsb before restore it arch_init: Start to trace dirty pages of SVM COLO RAM: Flush cached RAM into SVM's memory COLO failover: Introduce a new command to trigger a failover COLO failover: Implement COLO master/slave failover work COLO failover: Don't do failover during loading VM's state COLO: Add new command parameter 'colo_nicname' 'colo_script' for net COLO NIC: Init/remove colo nic devices when add/cleanup tap devices COLO NIC: Implement colo nic device interface configure() COLO NIC : Implement colo nic init/destroy function COLO NIC: Some init work related with proxy module COLO: Do checkpoint according to the result of net packets comparing COLO: Improve checkpoint efficiency by do additional periodic checkpoint COLO: Add colo-set-checkpoint-period command COLO NIC: Implement NIC checkpoint and failover COLO: Disable qdev hotplug when VM is in COLO mode COLO: Implement shutdown checkpoint arch_init.c | 199 +++++++- configure | 14 + hmp-commands.hx | 30 ++ hmp.c | 14 + hmp.h | 2 + include/exec/cpu-all.h | 1 + include/migration/migration-colo.h | 58 +++ include/migration/migration-failover.h | 22 + include/migration/migration.h | 3 + include/migration/qemu-file.h | 3 +- include/net/colo-nic.h | 25 + include/net/net.h | 4 + include/sysemu/sysemu.h | 3 + migration/Makefile.objs | 2 + migration/colo-comm.c | 80 ++++ migration/colo-failover.c | 48 ++ migration/colo.c | 809 +++++++++++++++++++++++++++++++++ migration/migration.c | 60 ++- migration/qemu-file-buf.c | 58 +++ net/Makefile.objs | 1 + net/colo-nic.c | 438 ++++++++++++++++++ net/tap.c | 45 +- qapi-schema.json | 42 +- qemu-options.hx | 10 +- qmp-commands.hx | 41 ++ savevm.c | 2 +- scripts/colo-proxy-script.sh | 97 ++++ stubs/Makefile.objs | 1 + stubs/migration-colo.c | 58 +++ vl.c | 36 +- 30 files changed, 2178 insertions(+), 28 deletions(-) create mode 100644 include/migration/migration-colo.h create mode 100644 include/migration/migration-failover.h create mode 100644 include/net/colo-nic.h create mode 100644 migration/colo-comm.c create mode 100644 migration/colo-failover.c create mode 100644 migration/colo.c create mode 100644 migration/colo.c. create mode 100644 net/colo-nic.c create mode 100755 scripts/colo-proxy-script.sh create mode 100644 stubs/migration-colo.c -- 1.7.12.4