Systems and methods for deletion of untracked datastore paths

• US 9,069,593 B2
• Filed: 08/16/2011
• Issued: 06/30/2015
• Est. Priority Date: 06/23/2011
• Status: Active Grant

• Current Assignee: Salesforce.com, Inc.
• Original Assignee: Salesforce.com, Inc.
• Inventors: Falko, Andrey
• Primary Examiner(s): An, Meng
• Assistant Examiner(s): GHAFFARI, ABU Z
• Application Number:
  US13/211,087
• Publication Number:
  US 20120331462A1
• Time in Patent Office: 1,414 Days
• Field of Search: 718/1, 718/102, 718/103, 707/716, 707/731, 707/831, 707/E17.012, 707/E17.004, 707/999.01, 711/100, 711/111, 711/112, 711/161, 711/162, 711/165, 711/154
• US Class Current: 1/1
• CPC Class Codes: G06F 2009/45562 Creating, deleting, cloning virtual machine instances
• CPC Class Codes: G06F 9/45533 Hypervisors; Virtual machine monitors
• CPC Class Codes: Y02D 10/00 Energy efficient computing, e.g. low power processors, power management or thermal management

Abstract

In an embodiment, first and second lists of virtual machine datastore paths are obtained. The first list includes datastore paths on a datastore. The second list includes datastore paths that are associated with existing virtual machines. The first and second lists are compared and non-matching datastore paths are deleted from the datastore, thereby freeing up disk space on the datastore.

Claims

1. A method for deleting datastore paths corresponding to deleted virtual machines on a host computer, the method comprising:

obtaining a first set of datastore paths from a datastore, the first set of datastore paths corresponding to a first set of virtual machines;

obtaining a second set of datastore paths, the second set of datastore paths corresponding to all existing virtual machines on the host computer, wherein the first and second sets of datastore paths identify locations on one or more physical disks of the datastore;

comparing the first set of datastore paths with the second list set of datastore paths; and

deleting, based on the comparison, datastore paths in the first set of datastore paths that are not contained in the second set of datastore paths from the one or more physical disks of the datastore, the deleted datastore paths representing mappings to files corresponding to one or more deleted virtual machines, and the deleted one or more virtual machines having been base image virtual machines from which linked clone virtual machines were created prior to deletion.

2. The method of claim 1 wherein the existing virtual machines include a base image virtual machine and a linked clone virtual machine.

3. The method of claim 1 wherein the obtaining the second set of datastore paths comprises:

obtaining a plurality of configuration files for the existing virtual machines; and

obtaining from the configuration files log directories used by the existing virtual machines, wherein the log directories identify the datastore paths of the second set of datastore paths.

4. A computer program product comprising computer readable program code for deleting datastore paths corresponding to deleted virtual machines on a host computer, the program code to be executed by one or more processors when retrieved from a non-transitory machine-readable medium, the program code including instructions to:

obtain a first set of datastore paths from a datastore, the first set of datastore paths corresponding to a first set of virtual machines;

obtain a second set of datastore paths, the second set of datastore paths corresponding to all existing virtual machines on the host computer, wherein the first and second sets of datastore paths identify locations on one or more physical disks of the datastore;

compare the first set of datastore paths with the second set of datastore paths; and

delete, based on the comparison, datastore paths in the first set of datastore paths that are not contained in the second set of datastore paths from the one or more physical disks of the datastore, the deleted datastore paths representing mappings to files corresponding to one or more deleted virtual machines, and the deleted one or more virtual machines having been base image virtual machines from which linked clone virtual machines were created prior to deletion.

5. The computer program product of claim 4 wherein the existing virtual machines include a base image virtual machine and a linked clone virtual machine.

6. The computer program product of claim 4 wherein the instructions to obtain the second set of datastore paths comprise instructions to:

obtain configuration files for the existing virtual machines; and

obtain from the configuration files log directories used by the existing virtual machines, wherein the log directories identify the datastore paths of the second set of datastore paths.

7. An apparatus comprising:

a processor; and

one or more stored sequences of instructions for deleting datastore paths corresponding to deleted virtual machines on a host computer which, when executed by the processor, cause the processor to;

obtain a first set of datastore paths from a datastore, the first set of datastore paths corresponding to a first set of virtual machines;

obtain a second set of datastore paths, the second set of datastore paths corresponding to all existing virtual machines on the host computer, wherein the first and second sets of datastore paths identify locations on one or more physical disks of the datastore;

compare the first set of datastore paths with the second set of datastore paths; and

delete, based on the comparison, datastore paths in the first set of datastore paths that are not contained in the second set of datastore paths from the one or more physical disks of the datastore, the deleted datastore paths representing mappings to a files corresponding to one or more deleted virtual machines, and the deleted one or more virtual machines having been base image virtual machines from which linked clone virtual machines were created prior to deletion.

8. The apparatus of claim 7 wherein the existing virtual machines include a base image virtual machine and a linked clone virtual machine.

9. The apparatus of claim 7 wherein the one or more stored sequences of instructions to obtain the second set of datastore paths comprise instructions to:

obtain configuration files for the existing virtual machines; and

obtain from the configuration files log directories used by the existing virtual machines, wherein the log directories identify the datastore paths of the second set of datastore paths.

10. A system for deleting datastore paths corresponding to deleted virtual machines on a host computer, the system comprising:

a processor-based application, which when executed on a computer, causes the processor to;

obtain a first set of datastore paths from a datastore, the first set of datastore paths corresponding to a first set of virtual machines;

obtain a second set of datastore paths, the second set of datastore paths corresponding to all existing virtual machines on the host computer, wherein the first and second sets of datastore paths identify locations on one or more physical disks of the datastore;

compare the first set of datastore paths with the second set of datastore paths; and

delete, based on the comparison, datastore paths in the first set of datastore paths that are not contained in the second set of datastore paths from the one or more physical disks of the datastore, the deleted datastore paths representing mappings to files corresponding to one or more deleted virtual machines, and the deleted one or more virtual machines having been base image virtual machines from which linked clone virtual machines were created prior to deletion.

11. The system of claim 10 wherein the existing virtual machines include a base image virtual machine and a linked clone virtual machine.

12. The system of claim 10 wherein the processor-based application, when executed, further causes the processor to:

obtain configuration files for the existing virtual machines; and

obtain from the configuration files log directories used by the existing virtual machines, wherein the log directories identify the datastore paths of the second set of datastore paths.