Group-based container checkpoint generation

A method comprising:

• configuring a host device comprising at least one processor and an associated memory to implement a plurality of containers each configured to access one or more portions of the memory;
• the containers being implemented as respective kernel control groups utilizing operating system level virtualization of the processor of the host device;
• the method further comprising the following steps performed by the host device:
• assigning the containers to groups in accordance with one or more designated criteria;
• and
• generating checkpoints for respective groups of the containers;
• wherein in conjunction with generation of a given one of the checkpoints for a particular one of the groups of containers, the host device is further configured to identify one or more pages of the memory that are shared by at least first and second containers of the particular group of containers, and to generate the given checkpoint without duplicating the one or more shared pages to persistent storage.

A computer program product comprising a non-transitory processor-readable storage medium having stored therein program code of one or more software programs, wherein the program code when executed by a host device comprising at least one processor and an associated memory causes the host device:

• to implement a plurality of containers each configured to access one or more portions of the memory;
• the containers being implemented as respective kernel control groups utilizing operating system level virtualization of the processor of the host device;
• to assign the containers to groups in accordance with one or more designated criteria;
• and
• to generate checkpoints for respective groups of the containers;
• wherein in conjunction with generation of a given one of the checkpoints for a particular one of the groups of containers, the host device is further configured to identify one or more pages of the memory that are shared by at least first and second containers of the particular group of containers, and to generate the given checkpoint without duplicating the one or more shared pages to persistent storage.