Abstract: Metadata of objects in a directory is stored, forming a first shard associated with a first mapping range. Mapped values corresponding to the objects belong to the first mapping range and an arrangement sequence of the metadata in the first shard is consistent with a size sequence of the mapped values. A first mapped value belonging to the first mapping range is obtained. and split into a second and third mapping range using the first mapped value as a first split point. The first shard is split into a second shard and a third shard having respective mapping ranges, using a location of metadata of an object corresponding to the first mapped value as a second split point, such that mapped values of objects in the second shard belong to the second mapping range, and mapped values of objects in the third shard belong to the third mapping range.

Abstract: A virtual disk file format conversion method and an apparatus that relate to the field of virtualization technologies and to resolve a service interruption caused by offline conversion of a virtual machine disk image file format when a virtual machine is migrated between different types of VMMs. The method and apparatus include establishing a mapping table between a virtual address of a virtual machine (VM) disk image file and a physical address of a disk image file that is compatible with a virtual machine monitor (VMM), converting, according to the mapping table, the virtual address used when a user performs reading/writing on the VM disk image file, into the physical address mapped to the virtual address, and performing data reading/writing on the VM disk image file based on the physical address.

Abstract: A virtual disk file format conversion method and an apparatus that relate to the field of virtualization technologies and to resolve a service interruption caused by offline conversion of a virtual machine disk image file format when a virtual machine is migrated between different types of VMMs. The method and apparatus include establishing a mapping table between a virtual address of a virtual machine (VM) disk image file and a physical address of a disk image file that is compatible with a virtual machine monitor (VMM), converting, according to the mapping table, the virtual address used when a user performs reading/writing on the VM disk image file, into the physical address mapped to the virtual address, and performing data reading/writing on the VM disk image file based on the physical address.