On Tue, 2 Feb 2021 at 13:53, Damir Chanyshev <conflict...@gmail.com> wrote: > > Hello, > Qemu version 5.1 host os Debian 10.7 > Two exactly the same machines ( except ram size 380G and 1.5T ) > Live migration fails (from host with 380G ram to 1.5T) with errors like this: > Feb 02 16:26:13 QEMU[12090]: kvm: load of migration failed: Invalid argument > Feb 02 16:26:13 QEMU[12090]: kvm: error while loading state for > instance 0x0 of device 'ram' > Feb 02 16:26:13 QEMU[12090]: kvm: Mismatched RAM page size ram-node0 > (local) 2097152 != 1526773257204281392
Are you using exactly the same VM config on both source and destination ? The migration error messages are often rather opaque, but generally they mean "the source and the destination don't match". In this case I think the message means that the hugepage size on source and destination hosts is different. thanks -- PMM
