Virtual machine recovery in shared memory architecture
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United States of America Patent
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Dec 1, 2020
Grant Date -
Aug 29, 2019
app pub date -
Mar 21, 2019
filing date -
Jun 20, 2016
priority date (Note) -
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Abstract
Examples provide for virtual machine recovery using pooled memory. A shared partition is created on pooled memory accessible by a plurality of virtual machine hosts. A set of memory pages for virtual machines running on the hosts is moved to the shared partition. A master agent polls memory page tables associated with the plurality of hosts for write access. If the master agent obtains write access to a memory page table of a given host, the given host that previously held the write access is identified as a failed host or an isolated host. The virtual machines of the given host enabled to resume from pooled memory are respawned on a new host while maintaining memory state of the virtual machines using data within the pooled memory, including the virtual machine memory pages, memory page table, host profile data, and/or host-to-VM table data.
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