LWN: Live migration of virtual machines over CXL
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Georg Faerber
May 16, 2023, 5:19:25 AM5/16/23
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LWN published an article [1], which is maybe of interest to some of you:
Virtual-machine hosting can be a fickle business; once a virtual machine
has been placed on a physical host, there may arise a desire to move it
to a different host. The problem with migrating virtual machines,
though, is that there is a period during which the machine is not
running; that can be disruptive even if it is brief. At the 2023 Linux
Storage, Filesystem, Memory-Management and BPF Summit, Dragan Stancevic,
presenting remotely, showed how CXL shared memory can be used to migrate
virtual machines with no offline time. [...]
[1] https://lwn.net/SubscriberLink/931528/f932949799f303ea/
Virtual-machine hosting can be a fickle business; once a virtual machine
has been placed on a physical host, there may arise a desire to move it
to a different host. The problem with migrating virtual machines,
though, is that there is a period during which the machine is not
running; that can be disruptive even if it is brief. At the 2023 Linux
Storage, Filesystem, Memory-Management and BPF Summit, Dragan Stancevic,
presenting remotely, showed how CXL shared memory can be used to migrate
virtual machines with no offline time. [...]
[1] https://lwn.net/SubscriberLink/931528/f932949799f303ea/
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