[PATCH v3 0/3] dump-guest-memory: Add blocker for migration
Posted by
Peter Xu
2 years, 7 months ago
v3:
- Patch 3: in qmp_dump_guest_memory(), keeps the RUN_STATE_INMIGRATE check
[Marc-Andre]
v2:
- One more patch: "migration: Make migration blocker work for snapshots too"
- Move register of migration blocker to be before dump_init [Marc-Andre]
- Collected r-bs
Both dump-guest-memory and live migration have vm state cached internally.
Allowing them to happen together means the vm state can be messed up. Simply
block live migration for dump-guest-memory.
One trivial thing to mention is we should still allow dump-guest-memory even if
-only-migratable is specified, because that flag should majorly be used to
guarantee not adding devices that will block migration by accident. Dump guest
memory is not like that - it'll only block for the seconds when it's dumping.
Thanks,
Peter Xu (3):
migration: Make migration blocker work for snapshots too
migration: Add migrate_add_blocker_internal()
dump-guest-memory: Block live migration
dump/dump.c | 19 +++++++++++++++++++
include/migration/blocker.h | 16 ++++++++++++++++
migration/migration.c | 24 +++++++++++++++---------
3 files changed, 50 insertions(+), 9 deletions(-)
--
2.31.1
Re: [PATCH v3 0/3] dump-guest-memory: Add blocker for migration
Posted by
Peter Xu
2 years, 6 months ago
On Wed, Sep 22, 2021 at 12:20:06PM -0400, Peter Xu wrote:
> v3:
> - Patch 3: in qmp_dump_guest_memory(), keeps the RUN_STATE_INMIGRATE check
> [Marc-Andre]
Ping - More comments?
If to go, should this go via dump or migration? I think it belongs more to
migration more (and I got Marc-Andre's ack on all patches).. but leaving that
to maintainers.
Thanks,
--
Peter Xu