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Re: [Qemu-devel] [PATCH COLO-Frame v5 00/29] COarse-grain LOck-stepping(
From: |
Dr. David Alan Gilbert |
Subject: |
Re: [Qemu-devel] [PATCH COLO-Frame v5 00/29] COarse-grain LOck-stepping(COLO) Virtual Machines for Non-stop Service |
Date: |
Thu, 21 May 2015 12:30:08 +0100 |
User-agent: |
Mutt/1.5.23 (2014-03-12) |
* zhanghailiang (address@hidden) wrote:
> This is the 5th 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:
> "[Qemu-devel] [PATCH COLO-Block v5 00/15] Block replication for continuous
> checkpoints"
>
> we have finished some new features and optimization on COLO (As a development
> branch in github),
> but for easy of review, it is better to keep it simple now, so we will not
> add too much new
> codes into this frame patch set before it been totally reviewed.
>
> You can get the latest integrated qemu colo patches from github (Include
> Block part):
> https://github.com/coloft/qemu/commits/colo-v1.2-basic
> https://github.com/coloft/qemu/commits/colo-v1.2-developing (more features)
>
> Please NOTE the difference between these two branch.
> colo-v1.2-basic is exactly same with this patch series, which has basic
> features of COLO.
> Compared with colo-v1.2-basic, colo-v1.2-developing has some optimization in
> the
> process of checkpoint, including:
> 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.
> Besides, we add some statistic info in colo-v1.2-developing, which you can
> get these stat
> info by using command 'info migrate'.
>
> You can test any branch of the above,
> about how to test COLO, Please reference to the follow link.
> http://wiki.qemu.org/Features/COLO.
Thanks, I'll try these out over the next few days.
It would be good to use some tags on the colo-proxy git;
it would be a bit confusing for people trying to use your previous
qemu patches if they fetched todays colo-proxy tree.
Dave
>
> COLO is still in early stage,
> your comments and feedback are warmly welcomed.
>
> Cc: address@hidden
>
> TODO:
> 1. Strengthen failover
> 2. COLO function switch on/off
> 2. Optimize proxy part, include proxy script.
> 1) Remove the limitation of forward network link.
> 2) Reuse the nfqueue_entry and NF_STOLEN to enqueue skb
> 3. The capability of continuous FT
>
> v5:
> - Replace the previous communication way between proxy and qemu with nfnetlink
> - Remove the 'forward device'parameter of xt_PMYCOLO, and now we use iptables
> command
> to set the 'forward device'
> - Turn DPRINTF into trace_ calls as Dave's suggestion
>
> 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 (28):
> 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: Handle nfnetlink message from proxy module
> COLO: Do checkpoint according to the result of packets comparation
> 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 | 243 +++++++++-
> configure | 36 +-
> hmp-commands.hx | 30 ++
> hmp.c | 14 +
> hmp.h | 2 +
> include/exec/cpu-all.h | 1 +
> include/migration/migration-colo.h | 57 +++
> include/migration/migration-failover.h | 22 +
> include/migration/migration.h | 3 +
> include/migration/qemu-file.h | 3 +-
> include/net/colo-nic.h | 27 ++
> include/net/net.h | 3 +
> include/sysemu/sysemu.h | 3 +
> migration/Makefile.objs | 2 +
> migration/colo-comm.c | 68 +++
> migration/colo-failover.c | 48 ++
> migration/colo.c | 836
> +++++++++++++++++++++++++++++++++
> migration/migration.c | 60 ++-
> migration/qemu-file-buf.c | 58 +++
> net/Makefile.objs | 1 +
> net/colo-nic.c | 420 +++++++++++++++++
> net/tap.c | 45 +-
> qapi-schema.json | 42 +-
> qemu-options.hx | 10 +-
> qmp-commands.hx | 41 ++
> savevm.c | 2 +-
> scripts/colo-proxy-script.sh | 88 ++++
> stubs/Makefile.objs | 1 +
> stubs/migration-colo.c | 58 +++
> trace-events | 11 +
> vl.c | 39 +-
> 31 files changed, 2235 insertions(+), 39 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 net/colo-nic.c
> create mode 100755 scripts/colo-proxy-script.sh
> create mode 100644 stubs/migration-colo.c
>
> --
> 1.7.12.4
>
>
--
Dr. David Alan Gilbert / address@hidden / Manchester, UK
- [Qemu-devel] [PATCH COLO-Frame v5 27/29] COLO: Disable qdev hotplug when VM is in COLO mode, (continued)
- [Qemu-devel] [PATCH COLO-Frame v5 27/29] COLO: Disable qdev hotplug when VM is in COLO mode, zhanghailiang, 2015/05/21
- [Qemu-devel] [PATCH COLO-Frame v5 19/29] COLO NIC: Implement colo nic device interface configure(), zhanghailiang, 2015/05/21
- [Qemu-devel] [PATCH COLO-Frame v5 29/29] COLO: Add block replication into colo process, zhanghailiang, 2015/05/21
- [Qemu-devel] [PATCH COLO-Frame v5 23/29] COLO: Do checkpoint according to the result of packets comparation, zhanghailiang, 2015/05/21
- [Qemu-devel] [PATCH COLO-Frame v5 26/29] COLO NIC: Implement NIC checkpoint and failover, zhanghailiang, 2015/05/21
- [Qemu-devel] [PATCH COLO-Frame v5 16/29] COLO failover: Don't do failover during loading VM's state, zhanghailiang, 2015/05/21
- [Qemu-devel] [PATCH COLO-Frame v5 04/29] migration: Integrate COLO checkpoint process into migration, zhanghailiang, 2015/05/21
- [Qemu-devel] [PATCH COLO-Frame v5 07/29] COLO: Add a new RunState RUN_STATE_COLO, zhanghailiang, 2015/05/21
- [Qemu-devel] [PATCH COLO-Frame v5 22/29] COLO: Handle nfnetlink message from proxy module, zhanghailiang, 2015/05/21
- [Qemu-devel] [PATCH COLO-Frame v5 17/29] COLO: Add new command parameter 'colo_nicname' 'colo_script' for net, zhanghailiang, 2015/05/21
- Re: [Qemu-devel] [PATCH COLO-Frame v5 00/29] COarse-grain LOck-stepping(COLO) Virtual Machines for Non-stop Service,
Dr. David Alan Gilbert <=
- Re: [Qemu-devel] [PATCH COLO-Frame v5 00/29] COarse-grain LOck-stepping(COLO) Virtual Machines for Non-stop Service, Dr. David Alan Gilbert, 2015/05/28