05.03.2019, 21:06, "Dr. David Alan Gilbert" <dgilb...@redhat.com>:
> * Dr. David Alan Gilbert (dgilb...@redhat.com) wrote:
>> * Yury Kotov (yury-ko...@yandex-team.ru) wrote:
>> > Hi,
>> >
>> > The series adds a migration capability, which allows to skip shared RAM
>> blocks
>> > during the migration. It's useful for fast local migration. E.g. to
>> update QEMU
>> > for the running guests.
>>
>> Queued
>
> Hi Yury,
> The test is failing badly on aarch64 tcg for me (i.e. aarch64 tcg on
> x86); I'm going to keep it merged but keep the test disabled for now.
> Can you have a look to see if you can see what's going wrong?
>
> Dave
>
Hi,
Yes, of course. I'll look at this.
Regards,
Yury
>> >
>> > Usage example:
>> > 1. Start source VM:
>> > qemu-system-x86 \
>> > -m 4G \
>> > -object
>> memory-backend-file,id=mem0,size=4G,share=on,mem-path=/dev/shm/mem0 \
>> > -numa node,memdev=mem0 \
>> > -qmp unix:/tmp/qemu-qmp-1.sock,server,nowait \
>> >
>> > 2. Start target VM:
>> > qemu-system-x86 \
>> > -m 4G \
>> > -object
>> memory-backend-file,id=mem0,size=4G,share=on,mem-path=/dev/shm/mem0 \
>> > -numa node,memdev=mem0 \
>> > -qmp unix:/tmp/qemu-qmp-2.sock,server,nowait \
>> > -incoming defer
>> >
>> > 3. Enable ignore-shared capability on both VMs:
>> > { "execute": "migrate-set-capabilities" , "arguments":
>> > { "capabilities": [ { "capability": "x-ignore-shared", "state": true } ]
>> } }
>> >
>> > 4. Start migration.
>> >
>> > Another use case I keep in mind is to migrate to file. Usage is very
>> similar.
>> >
>> > V2 to V3:
>> > * Split "migration: Introduce ignore-shared capability"
>> > * Serialize the capabilities as strings rather than as indexes
>> > * Don't allow to enable postcopy and ignore-shared together
>> > * Skip the test for OSs which don't have /dev/shm
>> > * Add a check whether shared RAM has been really skipped
>> >
>> > V1 to V2:
>> > * Keep migration stream compatibility
>> > * Reuse the existing code to ignore unwanted RAMBlocks
>> > * Add capability validation feature
>> > * ignore-external -> ignore-shared
>> >
>> > Regards,
>> > Yury
>> >
>> > Yury Kotov (5):
>> > exec: Change RAMBlockIterFunc definition
>> > migration: Introduce ignore-shared capability
>> > migration: Add an ability to ignore shared RAM blocks
>> > tests/migration-test: Add a test for ignore-shared capability
>> > migration: Add capabilities validation
>> >
>> > exec.c | 38 +++++------
>> > include/exec/cpu-common.h | 7 +-
>> > migration/migration.c | 14 ++++
>> > migration/migration.h | 5 +-
>> > migration/postcopy-ram.c | 48 +++++++------
>> > migration/ram.c | 110 ++++++++++++++++++++++--------
>> > migration/rdma.c | 9 ++-
>> > migration/savevm.c | 137 ++++++++++++++++++++++++++++++++++++++
>> > qapi/migration.json | 5 +-
>> > stubs/ram-block.c | 15 +++++
>> > tests/migration-test.c | 131 +++++++++++++++++++++++++++++-------
>> > util/vfio-helpers.c | 6 +-
>> > 12 files changed, 420 insertions(+), 105 deletions(-)
>> >
>> > --
>> > 2.20.1
>> >
>> >
>> --
>> Dr. David Alan Gilbert / dgilb...@redhat.com / Manchester, UK
> --
> Dr. David Alan Gilbert / dgilb...@redhat.com / Manchester, UK
