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2019-08-16Include qemu/main-loop.h lessMarkus Armbruster
In my "build everything" tree, changing qemu/main-loop.h triggers a recompile of some 5600 out of 6600 objects (not counting tests and objects that don't depend on qemu/osdep.h). It includes block/aio.h, which in turn includes qemu/event_notifier.h, qemu/notify.h, qemu/processor.h, qemu/qsp.h, qemu/queue.h, qemu/thread-posix.h, qemu/thread.h, qemu/timer.h, and a few more. Include qemu/main-loop.h only where it's needed. Touching it now recompiles only some 1700 objects. For block/aio.h and qemu/event_notifier.h, these numbers drop from 5600 to 2800. For the others, they shrink only slightly. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20190812052359.30071-21-armbru@redhat.com> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
2019-08-16Include exec/memory.h slightly lessMarkus Armbruster
Drop unnecessary inclusions from headers. Downgrade a few more to exec/hwaddr.h. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com> Message-Id: <20190812052359.30071-17-armbru@redhat.com>
2019-07-02migration/colo.c: Add missed filter notify for Xen COLO.Zhang Chen
We need to notify net filter to do checkpoint for Xen COLO, like KVM side. Signed-off-by: Zhang Chen <chen.zhang@intel.com> Signed-off-by: Jason Wang <jasowang@redhat.com>
2019-05-14migration/colo.c: Remove redundant input parameterZhang Chen
The colo_do_failover no need the input parameter. Signed-off-by: Zhang Chen <chen.zhang@intel.com> Message-Id: <20190426090730.2691-2-chen.zhang@intel.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2019-03-25Migration/colo.c: Make user obtain the last COLO mode info after failoverZhang Chen
Add the last_colo_mode to save the status after failover. This patch can solve the issue that user want to get last colo mode use query_colo_status after failover. Signed-off-by: Zhang Chen <chen.zhang@intel.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com>
2019-03-25Migration/colo.c: Add the necessary checks for colo_do_failoverZhang Chen
Signed-off-by: Zhang Chen <chen.zhang@intel.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com>
2019-03-25Migration/colo.c: Add new COLOExitReason to handle all failover stateZhang Chen
In this patch we add the processing state for COLOExitReason, because we have to identify COLO in the failover processing state or failover error state. In the way, we can handle all the failover state. We have improved the description of the COLOExitReason by the way. Signed-off-by: Zhang Chen <chen.zhang@intel.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com>
2019-03-25Migration/colo.c: Fix COLO failover status errorZhang Chen
When finished COLO failover, the status is FAILOVER_STATUS_COMPLETED. The origin codes misunderstand the FAILOVER_STATUS_REQUIRE. Signed-off-by: Zhang Chen <chen.zhang@intel.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com>
2019-03-06Migration/colo.c: Make COLO node running after failoverZhang Chen
Delay to close COLO for auto start VM after failover. Signed-off-by: Zhang Chen <chen.zhang@intel.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Message-Id: <20190303145021.2962-4-chen.zhang@intel.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2019-03-06Migration/colo.c: Fix double close bug when occur COLO failoverZhang Chen
In migration_incoming_state_destroy(void) will check the mis->to_src_file to double close the mis->to_src_file when occur COLO failover. Signed-off-by: Zhang Chen <chen.zhang@intel.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Message-Id: <20190303145021.2962-2-chen.zhang@intel.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2018-12-14qapi: add conditions to REPLICATION type/commands on the schemaMarc-André Lureau
Add #if defined(CONFIG_REPLICATION) in generated code, and adjust the code accordingly. Made conditional: * xen-set-replication, query-xen-replication-status, xen-colo-do-checkpoint Before the patch, we first register the commands unconditionally in generated code (requires a stub), then conditionally unregister in qmp_unregister_commands_hack(). Afterwards, we register only when CONFIG_REPLICATION. The command fails exactly the same, with CommandNotFound. Improvement, because now query-qmp-schema is accurate, and we're one step closer to killing qmp_unregister_commands_hack(). * enum BlockdevDriver value "replication" in command blockdev-add * BlockdevOptions variant @replication and related structures. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20181213123724.4866-23-marcandre.lureau@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2018-11-21migration/colo.c: Fix compilation issue when disable replicationZhang Chen
This compilation issue will occur when user use --disable-replication to config Qemu. Reported-by: Thomas Huth <thuth@redhat.com> Signed-off-by: Zhang Chen <zhangckid@gmail.com> Message-Id: <20181101021226.6353-1-zhangckid@gmail.com> Tested-by: Thomas Huth <thuth@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2018-10-19COLO: quick failover process by kick COLO threadzhanghailiang
COLO thread may sleep at qemu_sem_wait(&s->colo_checkpoint_sem), while failover works begin, It's better to wakeup it to quick the process. Signed-off-by: zhanghailiang <zhang.zhanghailiang@huawei.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Jason Wang <jasowang@redhat.com>
2018-10-19COLO: notify net filters about checkpoint/failover eventzhanghailiang
Notify all net filters about the checkpoint and failover event. Signed-off-by: zhanghailiang <zhang.zhanghailiang@huawei.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Jason Wang <jasowang@redhat.com>
2018-10-19savevm: split the process of different stages for loadvm/savevmZhang Chen
There are several stages during loadvm/savevm process. In different stage, migration incoming processes different types of sections. We want to control these stages more accuracy, it will benefit COLO performance, we don't have to save type of QEMU_VM_SECTION_START sections everytime while do checkpoint, besides, we want to separate the process of saving/loading memory and devices state. So we add three new helper functions: qemu_load_device_state() and qemu_savevm_live_state() to achieve different process during migration. Besides, we make qemu_loadvm_state_main() and qemu_save_device_state() public, and simplify the codes of qemu_save_device_state() by calling the wrapper qemu_savevm_state_header(). Signed-off-by: zhanghailiang <zhang.zhanghailiang@huawei.com> Signed-off-by: Li Zhijian <lizhijian@cn.fujitsu.com> Signed-off-by: Zhang Chen <zhangckid@gmail.com> Signed-off-by: Zhang Chen <chen.zhang@intel.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Jason Wang <jasowang@redhat.com>
2018-10-19qapi: Add new command to query colo statusZhang Chen
Libvirt or other high level software can use this command query colo status. You can test this command like that: {'execute':'query-colo-status'} Signed-off-by: Zhang Chen <zhangckid@gmail.com> Signed-off-by: Zhang Chen <chen.zhang@intel.com> Signed-off-by: Jason Wang <jasowang@redhat.com>
2018-10-19qapi/migration.json: Rename COLO unknown mode to none mode.Zhang Chen
Suggested by Markus Armbruster rename COLO unknown mode to none mode. Signed-off-by: Zhang Chen <zhangckid@gmail.com> Signed-off-by: Zhang Chen <chen.zhang@intel.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Jason Wang <jasowang@redhat.com>
2018-10-19qmp event: Add COLO_EXIT event to notify users while exited COLOzhanghailiang
If some errors happen during VM's COLO FT stage, it's important to notify the users of this event. Together with 'x-colo-lost-heartbeat', Users can intervene in COLO's failover work immediately. If users don't want to get involved in COLO's failover verdict, it is still necessary to notify users that we exited COLO mode. Signed-off-by: zhanghailiang <zhang.zhanghailiang@huawei.com> Signed-off-by: Li Zhijian <lizhijian@cn.fujitsu.com> Signed-off-by: Zhang Chen <zhangckid@gmail.com> Signed-off-by: Zhang Chen <chen.zhang@intel.com> Signed-off-by: Jason Wang <jasowang@redhat.com>
2018-10-19COLO: Remove colo_state migration structZhang Chen
We need to know if migration is going into COLO state for incoming side before start normal migration. Instead by using the VMStateDescription to send colo_state from source side to destination side, we use MIG_CMD_ENABLE_COLO to indicate whether COLO is enabled or not. Signed-off-by: zhanghailiang <zhang.zhanghailiang@huawei.com> Signed-off-by: Zhang Chen <zhangckid@gmail.com> Signed-off-by: Zhang Chen <chen.zhang@intel.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Jason Wang <jasowang@redhat.com>
2018-10-19COLO: Add block replication into colo processZhang Chen
Make sure master start block replication after slave's block replication started. Besides, we need to activate VM's blocks before goes into COLO state. Signed-off-by: zhanghailiang <zhang.zhanghailiang@huawei.com> Signed-off-by: Li Zhijian <lizhijian@cn.fujitsu.com> Signed-off-by: Zhang Chen <zhangckid@gmail.com> Signed-off-by: Zhang Chen <chen.zhang@intel.com> Signed-off-by: Jason Wang <jasowang@redhat.com>
2018-10-19COLO: integrate colo compare with colo frameZhang Chen
For COLO FT, both the PVM and SVM run at the same time, only sync the state while it needs. So here, let SVM runs while not doing checkpoint, change DEFAULT_MIGRATE_X_CHECKPOINT_DELAY to 200*100. Besides, we forgot to release colo_checkpoint_semd and colo_delay_timer, fix them here. Signed-off-by: zhanghailiang <zhang.zhanghailiang@huawei.com> Signed-off-by: Zhang Chen <zhangckid@gmail.com> Signed-off-by: Zhang Chen <chen.zhang@intel.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Jason Wang <jasowang@redhat.com>
2018-08-22migration: implement bi-directional RDMA QIOChannelLidong Chen
This patch implements bi-directional RDMA QIOChannel. Because different threads may access RDMAQIOChannel currently, this patch use RCU to protect it. Signed-off-by: Lidong Chen <lidongchen@tencent.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com>
2018-03-02Include less of the generated modular QAPI headersMarkus Armbruster
In my "build everything" tree, a change to the types in qapi-schema.json triggers a recompile of about 4800 out of 5100 objects. The previous commit split up qmp-commands.h, qmp-event.h, qmp-visit.h, qapi-types.h. Each of these headers still includes all its shards. Reduce compile time by including just the shards we actually need. To illustrate the benefits: adding a type to qapi/migration.json now recompiles some 2300 instead of 4800 objects. The next commit will improve it further. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20180211093607.27351-24-armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> [eblake: rebase to master] Signed-off-by: Eric Blake <eblake@redhat.com>
2018-02-09Include qapi/error.h exactly where neededMarkus Armbruster
This cleanup makes the number of objects depending on qapi/error.h drop from 1910 (out of 4743) to 1612 in my "build everything" tree. While there, separate #include from file comment with a blank line, and drop a useless comment on why qemu/osdep.h is included first. Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20180201111846.21846-5-armbru@redhat.com> [Semantic conflict with commit 34e304e975 resolved, OSX breakage fixed]
2017-09-04qapi: Mechanically convert FOO_lookup[...] to FOO_str(...)Markus Armbruster
Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <1503564371-26090-14-git-send-email-armbru@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
2017-07-18migration: remove check against colo supportPeter Xu
Since commit a15215f3 ("build: remove --enable-colo/--disable-colo"), colo is always supported. We don't need any colo_supported() now since it is always true. Removing any extra code that depends on it. CC: Paolo Bonzini <pbonzini@redhat.com> CC: Hailiang Zhang <zhang.zhanghailiang@huawei.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Zhang Chen<zhangchen.fnst@cn.fujitsu.com> Signed-off-by: Peter Xu <peterx@redhat.com> Message-Id: <1500349150-13240-8-git-send-email-peterx@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com>
2017-07-10migration: Rename save_live_setup() to save_setup()Juan Quintela
We are going to use it now for more than save live regions. Once there rename qemu_savevm_state_begin() to qemu_savevm_state_setup(). Signed-off-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Message-Id: <20170628095228.4661-2-quintela@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2017-06-19migration: Fix race of image locking between src and dstFam Zheng
Previously, dst side will immediately try to lock the write byte upon receiving QEMU_VM_EOF, but at src side, bdrv_inactivate_all() is only done after sending it. If the src host is under load, dst may fail to acquire the lock due to racing with the src unlocking it. Fix this by hoisting the bdrv_inactivate_all() operation before QEMU_VM_EOF. N.B. A further improvement could possibly be done to cleanly handover locks between src and dst, so that there is no window where a third QEMU could steal the locks and prevent src and dst from running. N.B. This commit includes a minor improvement to the error handling by using qemu_file_set_error(). Reported-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Fam Zheng <famz@redhat.com> Message-id: 20170616160658.32290-1-famz@redhat.com Reviewed-by: Daniel P. Berrange <berrange@redhat.com> Reviewed-by: Juan Quintela <quintela@redhat.com> [PMM: noted qemu_file_set_error() use in commit as suggested by Daniel] Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2017-06-14migration: Remove unneeded includesJuan Quintela
Signed-off-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Peter Xu <peterx@redhat.com>
2017-06-13migration: Move migration.h to migration/Juan Quintela
Nothing uses it outside of migration.h Signed-off-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Peter Xu <peterx@redhat.com> Reviewed-by: Laurent Vivier <lvivier@redhat.com>
2017-06-01migration: Move include/migration/block.h into migration/Juan Quintela
All functions were internal, except blk_mig_init() that is exported in misc.h now. Signed-off-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2017-06-01migration: Split qemu-file.hJuan Quintela
Split the file into public and internal interfaces. I have to rename the external one because we can't have two include files with the same name in the same directory. Build system gets confused. The only exported functions are the ones that handle basic types. Signed-off-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2017-05-31migration: Create savevm.h for functions exported from savevm.cJuan Quintela
This removes last trace of migration functions from sysemu/sysemu.h. Signed-off-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Laurent Vivier <lvivier@redhat.com>
2017-05-30Merge remote-tracking branch 'armbru/tags/pull-qapi-2017-05-23' into stagingStefan Hajnoczi
QAPI patches for 2017-05-23 # gpg: Signature made Tue 23 May 2017 12:33:32 PM BST # gpg: using RSA key 0x3870B400EB918653 # gpg: Good signature from "Markus Armbruster <armbru@redhat.com>" # gpg: aka "Markus Armbruster <armbru@pond.sub.org>" # Primary key fingerprint: 354B C8B3 D7EB 2A6B 6867 4E5F 3870 B400 EB91 8653 * armbru/tags/pull-qapi-2017-05-23: qapi-schema: Remove obsolete note from ObjectTypeInfo block: Use QDict helpers for --force-share shutdown: Expose bool cause in SHUTDOWN and RESET events shutdown: Add source information to SHUTDOWN and RESET shutdown: Preserve shutdown cause through replay shutdown: Prepare for use of an enum in reset/shutdown_request shutdown: Simplify shutdown_signal sockets: Plug memory leak in socket_address_flatten() scripts/qmp/qom-set: fix the value argument passed to srv.command() Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2017-05-23shutdown: Prepare for use of an enum in reset/shutdown_requestEric Blake
We want to track why a guest was shutdown; in particular, being able to tell the difference between a guest request (such as ACPI request) and host request (such as SIGINT) will prove useful to libvirt. Since all requests eventually end up changing shutdown_requested in vl.c, the logical change is to make that value track the reason, rather than its current 0/1 contents. Since command-line options control whether a reset request is turned into a shutdown request instead, the same treatment is given to reset_requested. This patch adds an internal enum ShutdownCause that describes reasons that a shutdown can be requested, and changes qemu_system_reset() to pass the reason through, although for now nothing is actually changed with regards to what gets reported. The enum could be exported via QAPI at a later date, if deemed necessary, but for now, there has not been a request to expose that much detail to end clients. For the most part, we turn 0 into SHUTDOWN_CAUSE_NONE, and 1 into SHUTDOWN_CAUSE_HOST_ERROR; the only specific case where we have enough information right now to use a different value is when we are reacting to a host signal. It will take a further patch to edit all call-sites that can trigger a reset or shutdown request to properly pass in any other reasons; this patch includes TODOs to point such places out. qemu_system_reset() trades its 'bool report' parameter for a 'ShutdownCause reason', with all non-zero values having the same effect; this lets us get rid of the weird #defines for VMRESET_* as synonyms for bools. Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <20170515214114.15442-3-eblake@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
2017-05-18migration: Remove qemu-file.h from vmstate.hJuan Quintela
Signed-off-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> -- minor rearangements due to the rebase
2017-05-18migration: Remove migration.h from colo.hJuan Quintela
migration.h is not included in any includes now. Signed-off-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Peter Xu <peterx@redhat.com>
2017-05-18migration: Export qemu-file-channel.c functions in its own fileJuan Quintela
Signed-off-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2017-05-18migration: Remove old MigrationParamsJuan Quintela
Not used anymore after moving block migration to use capabilities. Signed-off-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: zhanghailiang <zhang.zhanghailiang@huawei.com> Reviewed-by: Peter Xu <peterx@redhat.com>
2017-05-18migration: Remove use of old MigrationParamsJuan Quintela
We have change in the previous patch to use migration capabilities for it. Notice that we continue using the old command line flags from migrate command from the time being. Remove the set_params method as now it is empty. For savevm, one can't do a: savevm -b/-i foo but now one can do: migrate_set_capability block on savevm foo And we can't use block migration. We could disable block capability unconditionally, but it would not be much better. Signed-off-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> --- - Maintain shared/enabled dependency (Xu suggestion) - Now we maintain the dependency on the setter functions - improve error messages
2017-04-28replication: Make --disable-replication compile againMarkus Armbruster
Broken in commit daa33c5. Cc: qemu-stable@nongnu.org Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Zhang Chen <zhangchen.fnst@cn.fujitsu.com> Message-id: 1493298053-17140-1-git-send-email-armbru@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2017-02-28Add a new qmp command to do checkpoint, query xen replication statusZhang Chen
We can call this qmp command to do checkpoint outside of qemu. Xen colo will need this function. Signed-off-by: Zhang Chen <zhangchen.fnst@cn.fujitsu.com> Signed-off-by: Wen Congyang <wencongyang@gmail.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Stefano Stabellini <sstabellini@kernel.org>
2017-02-28Add a new qmp command to start/stop replicationZhang Chen
We can call this qmp command to start/stop replication outside of qemu. Like Xen colo need this function. Signed-off-by: Zhang Chen <zhangchen.fnst@cn.fujitsu.com> Signed-off-by: Wen Congyang <wencongyang@gmail.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Stefano Stabellini <sstabellini@kernel.org> Reviewed-by: zhanghailiang <zhang.zhanghailiang@huawei.com> Signed-off-by: Stefano Stabellini <sstabellini@kernel.org>
2017-02-13COLO: Don't process failover request while loading VM's statezhanghailiang
We should not do failover work while the main thread is loading VM's state. Otherwise the consistent of VM's memory and device state will be broken. We will restart the loading process after jump over the stage, The new failover status 'RELAUNCH' will help to record if we need to restart the process. Cc: Eric Blake <eblake@redhat.com> Signed-off-by: zhanghailiang <zhang.zhanghailiang@huawei.com> Signed-off-by: Li Zhijian <lizhijian@cn.fujitsu.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Message-Id: <1484657864-21708-4-git-send-email-zhang.zhanghailiang@huawei.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Added a missing '(Since 2.9)'
2017-02-13COLO: Shutdown related socket fd while do failoverzhanghailiang
If the net connection between primary host and secondary host breaks while COLO/COLO incoming threads are doing read() or write(). It will block until connection is timeout, and the failover process will be blocked because of it. So it is necessary to shutdown all the socket fds used by COLO to avoid this situation. Besides, we should close the corresponding file descriptors after failvoer BH shutdown them, Or there will be an error. Signed-off-by: zhanghailiang <zhang.zhanghailiang@huawei.com> Signed-off-by: Li Zhijian <lizhijian@cn.fujitsu.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Cc: Dr. David Alan Gilbert <dgilbert@redhat.com> Message-Id: <1484657864-21708-3-git-send-email-zhang.zhanghailiang@huawei.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2017-02-13COLO: fix setting checkpoint-delay not working properlyzhanghailiang
If we set checkpoint-delay through command 'migrate-set-parameters', It will not take effect until we finish last sleep chekpoint-delay, That's will be offensive espeically when we want to change its value from an extreme big one to a proper value. Fix it by using timer to realize checkpoint-delay. Signed-off-by: zhanghailiang <zhang.zhanghailiang@huawei.com> Message-Id: <1484657864-21708-2-git-send-email-zhang.zhanghailiang@huawei.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2016-11-01migration: fix compiler warning on uninitialized variableJeff Cody
Some older GCC versions (e.g. 4.4.7) report a warning on an uninitialized variable for 'request', even though all possible code paths that reference 'request' will be initialized. To appease these versions, initialize the variable to 0. Reported-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> Signed-off-by: Jeff Cody <jcody@redhat.com> Reviewed-by: zhanghailiang <zhang.zhanghailiang@huawei.com> Message-id: 259818682e41b95ae60f1423b87954a3fe377639.1477950393.git.jcody@redhat.com Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2016-10-30configure: Support enable/disable COLO featurezhanghailiang
configure --enable-colo/--disable-colo to switch COLO support on/off. COLO feature doesn't depend on any other external libraries, So here it is reasonable to enable COLO by default, to avoid re-compile QEMU if users want to use this capability. Signed-off-by: zhanghailiang <zhang.zhanghailiang@huawei.com> Signed-off-by: Li Zhijian <lizhijian@cn.fujitsu.com> Signed-off-by: Gonglei <arei.gonglei@huawei.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Amit Shah <amit.shah@redhat.com> Signed-off-by: Amit Shah <amit@amitshah.net>
2016-10-30COLO: Implement failover work for secondary VMzhanghailiang
If users require SVM to takeover work, COLO incoming thread should exit from loop while failover BH helps backing to migration incoming coroutine. Signed-off-by: zhanghailiang <zhang.zhanghailiang@huawei.com> Signed-off-by: Li Zhijian <lizhijian@cn.fujitsu.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Amit Shah <amit.shah@redhat.com> Signed-off-by: Amit Shah <amit@amitshah.net>
2016-10-30COLO: Implement the process of failover for primary VMzhanghailiang
For primary side, if COLO gets failover request from users. To be exact, gets 'x_colo_lost_heartbeat' command. COLO thread will exit the loop while the failover BH does the cleanup work and resumes VM. Signed-off-by: zhanghailiang <zhang.zhanghailiang@huawei.com> Signed-off-by: Li Zhijian <lizhijian@cn.fujitsu.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Amit Shah <amit.shah@redhat.com> Signed-off-by: Amit Shah <amit@amitshah.net>
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-23 04:04:44 +0000