HOST-BASED REPLICATION WITH END-TO-END COMPRESSION
First Claim
1. A method for enabling end-to-end compression when performing host-based replication (HBR), the method comprising:
- intercepting, by a hypervisor running on a first host system at a primary site, I/O write requests that originate from a virtual machine (VM) configured to be replicated via HBR, the I/O write requests being destined for a virtual disk (VMDK) of the VM;
tracking, by the hypervisor of the first host system, VMDK file blocks that are modified by the I/O write requests;
retrieving, by the hypervisor of the first host system, the VMDK file blocks from a storage tier at the primary site;
compressing, by the hypervisor of the first host system, the retrieved VMDK file blocks; and
transmitting, by the hypervisor of the first host system, the compressed VMDK file blocks to a secondary site.
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Accused Products
Abstract
Techniques for enabling end-to-end compression when performing host-based replication (HBR) are provided. In one set of embodiments, a hypervisor running on a host system at a primary site can intercept I/O write requests that originate from a virtual machine (VM) configured to be replicated via HBR, the I/O write requests being destined for a virtual disk (VMDK) of the VM. The hypervisor can further track VMDK file blocks that are modified by the I/O write requests and can retrieve the VMDK file blocks from a storage tier at the primary site. The hypervisor can then compress the retrieved VMDK file blocks and transmit the compressed blocks to a secondary site.
13 Citations
21 Claims
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1. A method for enabling end-to-end compression when performing host-based replication (HBR), the method comprising:
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intercepting, by a hypervisor running on a first host system at a primary site, I/O write requests that originate from a virtual machine (VM) configured to be replicated via HBR, the I/O write requests being destined for a virtual disk (VMDK) of the VM; tracking, by the hypervisor of the first host system, VMDK file blocks that are modified by the I/O write requests; retrieving, by the hypervisor of the first host system, the VMDK file blocks from a storage tier at the primary site; compressing, by the hypervisor of the first host system, the retrieved VMDK file blocks; and transmitting, by the hypervisor of the first host system, the compressed VMDK file blocks to a secondary site. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A non-transitory computer readable storage medium having stored thereon program code executable by a first host system at a primary site, the program code embodying a method for enabling end-to-end compression when performing host-based replication (HBR), the method comprising:
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intercepting I/O write requests that originate from a virtual machine (VM) configured to be replicated via HBR, the I/O write requests being destined for a virtual disk (VMDK) of the VM; tracking VMDK file blocks that are modified by the I/O write requests; retrieving the VMDK file blocks from a storage tier at the primary site; compressing the retrieved VMDK file blocks; and transmitting the compressed VMDK file blocks to a secondary site. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A first host system operating at a primary site in a host-based replication (HBR) workflow, the first host system comprising:
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a processor; and a hypervisor running on the processor that is configured to; intercept I/O write requests that originate from a virtual machine (VM) configured to be replicated via HBR, the I/O write requests being destined for a virtual disk (VMDK) of the VM; track VMDK file blocks that are modified by the I/O write requests; retrieve the VMDK file blocks from a storage tier at the primary site; compress the retrieved VMDK file blocks; and transmit the compressed VMDK file blocks to a secondary site. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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Specification