Invention Grant
- Patent Title: Page cache management during migration using a list of outstanding store requests transmitted to a destination host machine
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Application No.: US15441165Application Date: 2017-02-23
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Publication No.: US10223276B2Publication Date: 2019-03-05
- Inventor: Michael Tsirkin
- Applicant: Red Hat, Inc.
- Applicant Address: US NC Raleigh
- Assignee: Red Hat, Inc.
- Current Assignee: Red Hat, Inc.
- Current Assignee Address: US NC Raleigh
- Agency: Lowenstein Sandler LLP
- Main IPC: G06F12/0875
- IPC: G06F12/0875 ; G06F3/06 ; G06F9/30 ; G06F9/48 ; G06F9/455

Abstract:
Systems and methods for page cache management during migration are disclosed. A method may include initiating, by a processing device of a source host machine, a migration process for migration of a virtualized component from the source host machine to a destination host machine. The method may also include obtaining a list of outstanding store requests corresponding to the virtualized component, the outstanding store requests maintained in a page cache of the source host machine and transmitting the list to the destination host machine. The method may further include providing instructions to cancel the outstanding store requests in the page cache, and providing instructions to clear remaining entries associated with the virtualized component in the page cache. The virtualized component may include a virtual machine or a container, and the outstanding store requests may correspond to requests for non-shared resources, such as a memory page. A request for the list may be generated by a user space component of an operating system (OS) of the source host machine, and transmitted to a kernel space component of a virtualization engine of the processing device.
Public/Granted literature
- US20180239707A1 PAGE CACHE MANAGEMENT DURING MIGRATION Public/Granted day:2018-08-23
Information query
IPC分类: