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allow changing the speed of a running migration
This patch allow us to call migrate_set_speed on runningmigrations. This should allow mgmt tools to increase the allocatedbandwidth of a running migration if there is no progress, and theyreally want the migration to succeed....
augment info migrate with page status
This should be enough for management tools to realizewhether or not there is progress in migration. We can...
migrate.c: migrate_fd_put_buffer: Do not busyloop: stop writing if EWOULDBLOCK
The migration code is non-blocking, designed for live migration.
Practically migrate_fd_put_buffer busy-loops trying to write, ason many machines EWOULDBLOCK==EAGAIN (look in include/asm-generic/errno.h)....
propagate error on failed completion (Glauber Costa)
migrate_fd_put_ready() calls qemu_savevm_state_complete(),but the later can fail.
If it happens, re-start the vm and propagate the error up
Based on a patch by Yaniv Kamay
Signed-off-by: Glauber Costa <glommer@redhat.com>...
monitor: Introduce MONITOR_USE_READLINE flag (Jan Kiszka)
This allows to create monitor terminals that do not make use of theinteractive readline back-end but rather send complete commands. Thepass-through monitor interface of the gdbstub will be an example....
monitor: Decouple terminals (Jan Kiszka)
Currently all registered (and activate) monitor terminals work inbroadcast mode: Everyone sees what someone else types on some otherterminal and what the monitor reports back. This model is broken whenyou have a management monitor terminal that is automatically operated...
monitor: Rework API (Jan Kiszka)
Refactor the monitor API and prepare it for decoupled terminals:term_print functions are renamed to monitor_* and all monitor servicesgain a new parameter (mon) that will once refer to the monitor instancethe output is supposed to appear on. However, the argument remains...
Reintroduce migrate-to-exec: support (Charles Duffy)
KVM's live migration support included support for exec: URLs, allowing systemstate to be written or received via an arbitrary popen()ed subprocess. Thisprovides a convenient way to pipe state through a compression algorithm or an...
Fix whitespace in migration code.
Replace tabs with spaces.
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5527 c046a42c-6fe2-441c-8c8c-71466251a162
Introduce TCP live migration protocol
This patch introduces a tcp protocol for live migration. It can be used asfollows:
qemu-system-x86_64 -hda ~/images/linux-test.img -monitor stdio <vm runs for a while>(qemu) migrate tcp:localhost:1025
On the same system:...
Introduce UI for live migration
This patch introduces a command line parameter and monitor command for startinga live migration. The next patch will provide an example of how to use theseparameters.
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>...