Virtualized file server upgrade

• US 10,540,164 B2
• Filed: 02/01/2017
• Issued: 01/21/2020
• Est. Priority Date: 02/12/2016
• Status: Active Grant

• Current Assignee: Nutanix Incorporated
• Original Assignee: Nutanix Incorporated
• Inventors: Bafna, Kalpesh Ashok, Ngo, Luong, Pasikanti, Kavitha, Kothuri, Venkata Vamsi Krishna, Ranasingh, Mausumi
• Primary Examiner(s): Kamran, Mehran
• Application Number:
  US15/422,249
• Publication Number:
  US 20170235562A1
• Time in Patent Office: 1,084 Days
• Field of Search: 718 1
• CPC Class Codes: G06F 11/0712 in a virtual computing platform, e.g. logically partitioned systems
• CPC Class Codes: G06F 11/0751 Error or fault detection not based on redundancy power supply failures G06F1/30; network fault management H04L41/06
• CPC Class Codes: G06F 11/0793 Remedial or corrective actions recovery from an exception in an instruction pipeline G06F9/3861; by retry G06F11/1402; for recovering from a failure of a protocol instance or entity H04L69/40
• CPC Class Codes: G06F 11/1451 by selection of backup contents
• CPC Class Codes: G06F 11/1464 for networked environments
• CPC Class Codes: G06F 11/1484 involving virtual machines
• CPC Class Codes: G06F 11/201 between storage system components
• CPC Class Codes: G06F 11/2025 using centralised failover control functionality
• CPC Class Codes: G06F 11/2033 switching over of hardware resources
• CPC Class Codes: G06F 11/2035 without idle spare hardware
• CPC Class Codes: G06F 11/2046 where the redundant components share persistent storage G06F11/2043 takes precedence
• CPC Class Codes: G06F 11/2058 using more than 2 mirrored copies
• CPC Class Codes: G06F 11/2069 Management of state, configuration or failover
• CPC Class Codes: G06F 11/2092 Techniques of failing over between control units
• CPC Class Codes: G06F 11/2094 Redundant storage or storage space G06F11/2056 takes precedence
• CPC Class Codes: G06F 11/3006 where the computing system is distributed, e.g. networked systems, clusters, multiprocessor systems multiprogramming arrangements G06F9/46; allocation of resources G06F9/50
• CPC Class Codes: G06F 11/301 where the computing system is a virtual computing platform, e.g. logically partitioned systems virtual machines G06F9/45533; logical partitioning of resources G06F9/5077
• CPC Class Codes: G06F 11/3409 for performance assessment
• CPC Class Codes: G06F 11/3452 Performance evaluation by statistical analysis
• CPC Class Codes: G06F 16/1727 Details of free space management performed by the file system saving storage space on storage systems G06F3/0608; management of blocks in storage devices G06F3/064
• CPC Class Codes: G06F 16/176 : Support for shared access to files; File sharing support
• CPC Class Codes: G06F 16/1774 : Locking methods, e.g. locking methods for file systems allowing shared and concurrent access to files
• CPC Class Codes: G06F 16/183 : Provision of network file services by network file servers, e.g. by using NFS, CIFS network file access protocols H04L67/1097
• CPC Class Codes: G06F 16/1844 : Management specifically adapted to replicated file systems
• CPC Class Codes: G06F 16/2365 : Ensuring data consistency and integrity
• CPC Class Codes: G06F 2009/45579 : I/O management, e.g. providing access to device drivers or storage
• CPC Class Codes: G06F 2009/45583 : Memory management, e.g. access or allocation
• CPC Class Codes: G06F 2009/45587 : Isolation or security of virtual machine instances
• CPC Class Codes: G06F 2009/45595 : Network integration; Enabling network access in virtual machine instances
• CPC Class Codes: G06F 21/53 : by executing in a restricted environment, e.g. sandbox or secure virtual machine
• CPC Class Codes: G06F 21/56 : Computer malware detection or handling, e.g. anti-virus arrangements
• CPC Class Codes: G06F 21/6218 : to a system of files or objects, e.g. local or distributed file system or database
• CPC Class Codes: G06F 21/78 : to assure secure storage of data address-based protection against unauthorised use of memory G06F12/14; record carriers for use with machines and with at least a part designed to carry digital markings G06K19/00
• CPC Class Codes: G06F 2201/80 : Database-specific techniques
• CPC Class Codes: G06F 2201/815 : Virtual
• CPC Class Codes: G06F 2201/825 : the problem or solution involving locking
• CPC Class Codes: G06F 2201/84 : Using snapshots, i.e. a logical point-in-time copy of the data
• CPC Class Codes: G06F 2201/87 : Monitoring of transactions
• CPC Class Codes: G06F 2221/034 : Test or assess a computer or a system
• CPC Class Codes: G06F 2221/2101 : Auditing as a secondary aspect
• CPC Class Codes: G06F 2221/2141 : Access rights, e.g. capability lists, access control lists, access tables, access matrices
• CPC Class Codes: G06F 2221/2145 : Inheriting rights or properties, e.g., propagation of permissions or restrictions within a hierarchy
• CPC Class Codes: G06F 3/0619 : in relation to data integrity, e.g. data losses, bit errors
• CPC Class Codes: G06F 3/0647 : Migration mechanisms
• CPC Class Codes: G06F 3/065 : Replication mechanisms
• CPC Class Codes: G06F 3/0664 : at device level, e.g. emulation of a storage device or system
• CPC Class Codes: G06F 3/0665 : at area level, e.g. provisioning of virtual or logical volumes
• CPC Class Codes: G06F 3/0683 : Plurality of storage devices
• CPC Class Codes: G06F 3/0689 : Disk arrays, e.g. RAID, JBOD
• CPC Class Codes: G06F 8/65 : Updates security arrangements therefor G06F21/57
• CPC Class Codes: G06F 9/4406 : Loading of operating system
• CPC Class Codes: G06F 9/45558 : Hypervisor-specific management and integration aspects
• CPC Class Codes: H04L 41/06 : Management of faults, events, alarms or notifications
• CPC Class Codes: H04L 41/082 : the condition being updates or upgrades of network functionality
• CPC Class Codes: H04L 41/0859 : by keeping history of different configuration generations or by rolling back to previous configuration versions
• CPC Class Codes: H04L 41/5009 : Determining service level performance parameters or violations of service level contracts, e.g. violations of agreed response time or mean time between failures [MTBF]
• CPC Class Codes: H04L 67/10 : in which an application is distributed across nodes in the network software deployment G06F8/60; multiprogramming arrangements G06F9/46
• CPC Class Codes: H04L 67/1095 : Replication or mirroring of data, e.g. scheduling or transport for data synchronisation between network nodes
• CPC Class Codes: H04L 67/1097 : for distributed storage of data in networks, e.g. transport arrangements for network file system [NFS], storage area networks [SAN] or network attached storage [NAS]
• CPC Class Codes: H04L 67/34 : involving the movement of software or configuration parameters network booting or remote initial program loading [RIPL] G06F9/4416

Abstract

In one embodiment, a system for managing a virtualization environment includes a set of host machines, each of which includes a hypervisor, virtual machines, and a virtual machine controller, one or more virtual disks comprising a plurality of storage devices, the one or more virtual disks being accessible by the virtual machine controllers, where the virtual machine controllers conduct I/O transactions with the virtual disks, and an upgrade system configured to receive a request to upgrade a virtualized file server on a plurality of host machines from a first program code version to a second program code version, for each host machine, generate a snapshot of a code image associated with the second program code version, and provide the snapshot to the host machine via the virtual disk. The virtual machine controller located on the host machine stores the snapshot on a first storage device associated with the host machine.

Claims

1. A system comprising:

a virtualized file server (VFS) comprising a plurality of file server virtual machines (FSVMs), the virtualized file server configured to provide file services to additional virtual machines hosted by one or more host machines; and

an upgrade system configured to;

receive a request to upgrade the virtualized file server from a first program code version to a second program code version;

generate a snapshot of a code image associated with the second program code version, wherein the code image comprises a boot disk image; and

provide the snapshot to at least a selected host machine of the host machines via a_virtual disk to cause a virtual machine controller located on the selected host machine to store the snapshot on a first storage device associated with the selected host machine, wherein the snapshot comprises metadata identifying a location of the code image on the first storage device.

2. The system of claim 1, wherein the metadata identifies locations of blocks of the code image on the first storage device.

3. The system of claim 1, wherein the code image is stored on a second storage device associated with a server host machine, and

wherein the snapshot comprises metadata identifying a location of at least one block of the code image on the second storage device.

4. The system of claim 1, wherein the upgrade system is further configured to detach an existing code image from a user virtual machine (VM) located on the selected host machine.

5. The system of claim 4, wherein the upgrade system is further configured to attach the snapshot to the user VM.

6. The system of claim 5, wherein the upgrade system is further configured to cause the user VM to boot from the snapshot.

7. A system comprising:

a virtualized file server (VFS) comprising a plurality of file server virtual machines (FSVMs), the virtualized file server configured to provide file services to additional virtual machines hosted by one or more host machines; and

an upgrade system configured to;

receive a request to upgrade the virtualized file server from a first program code version to a second program code version,

generate a snapshot of a code image associated with the second program code version, wherein the code image comprises a boot disk image, wherein the code image is stored on a second storage device associated with a server host machine, and

provide the snapshot to at least a selected host machine of the host machines via a virtual disk to cause a virtual machine controller located on the selected host machine to store the snapshot on a first storage device associated with the selected host machine, wherein the snapshot comprises metadata identifying a location of the code image on the second storage device and information associating the selected host machine with the server host machine.

8. One or more computer-readable non-transitory storage media, the media encoded with instructions for performing operations comprising:

receiving a request to upgrade a virtualized file server, the virtualized file server comprising a plurality of file server virtual machines (FSVMs) configured to provide file services to additional virtual machines hosted by one or more host machines, from a first program code version to a second program code version;

generating a snapshot of a code image associated with the second program code version, wherein the code image comprises a boot disk image; and

providing the snapshot to at least a selected one of the host machines via a virtual disk, to cause a virtual machine controller located on the selected host machine to store the snapshot on a first storage device associated with the selected host machine, wherein the snapshot comprises metadata identifying a location of the code image on the first storage device.

9. The media of claim 8, wherein the metadata identifies locations of blocks of the code image on the first storage device.

10. The media of claim 8, wherein the operations further comprise detaching an existing code image from a user virtual machine (VM) located on the selected host machine.

11. The media of claim 10, wherein the operations further comprise attaching the snapshot to the user VM.

12. The media of claim 11, wherein the operations further comprise causing the user VM to boot from the snapshot.

13. The media of claim 9, wherein the code image is stored on a second storage device associated with a server host machine, and

wherein the snapshot comprises metadata identifying a location of at least one block of the code image on the second storage device.

14. One or more computer-readable non-transitory storage media, the media encoded with instructions for performing operations comprising:

receiving a request to upgrade a virtualized file server, the virtualized file server comprising a plurality of file server virtual machines (FSVMs) configured to provide file services to additional virtual machines hosted by one or more host machines, from a first program code version to a second program code version,

generating a snapshot of a code image associated with the second program code version, wherein the code image comprises a boot disk image, wherein the code image is stored on a second storage device associated with a server host machine, and

providing the snapshot to at least a selected one of the host machines via a virtual disk, to cause a virtual machine controller located on the selected host machine to store the snapshot on a first storage device associated with the selected host machine, wherein the snapshot comprises metadata identifying a location of the code image on the second storage device.

15. A method comprising:

receiving a request to upgrade a virtualized file server comprising a plurality of file server virtual machines (FSVMs) configured to provide file services to additional virtual machines hosted by one or more host machines, from a first program code version to a second program code version;

generating a snapshot of a code image associated with the second program code version, wherein the code image comprises a boot disk image; and

providing the snapshot to at least a selected one of a selected one of the host machines via a virtual disk, to cause a virtual machine controller located on the selected host machine to store the snapshot on a first storage device associated with the selected host machine, wherein the snapshot comprises metadata identifying a location of the code image on the first storage device.

16. The method of claim 15, wherein the metadata identifies locations of blocks of the code image on the first storage device.

17. The method of claim 16, wherein the code image is stored on a second storage device associated with a server host machine, and

wherein the snapshot comprises metadata identifying a location of at least one block of the code image on the second storage device.

18. The method of claim 15 further comprising detaching an existing code image from a user virtual machine located on the selected host machine.

19. The method of claim 18 further comprising:

attaching the snapshot to the user VM; and

causing the user VM to boot from the snapshot.

20. A method comprising:

receiving a request to upgrade a virtualized file server comprising a plurality of file server virtual machines (FSVMs) configured to provide file services to additional virtual machines hosted by one or more host machines, from a first program code version to a second program code version;

generating a snapshot of a code image associated with the second program code version, wherein the code image comprises a boot disk image, wherein the code image is stored on a second storage device associated with a server host machine; and

providing the snapshot to at least a selected one of a selected one of the host machines via a virtual disk, to cause a virtual machine controller located on the selected host machine to store the snapshot on a first storage device associated with the selected host machine, wherein the snapshot comprises metadata identifying a location of the code image on the second storage device.

21. A method comprising:

receiving a request to upgrade a virtualized file server comprising a plurality of file server virtual machines (FSVMs) configured to provide file services to additional virtual machines hosted by one or more host machines, from a first program code version to a second program code version;

generating a snapshot of a code image associated with the second program code version, wherein the code image comprises a boot disk image; and

providing the snapshot to at least a selected one of a selected one of the host machines via a virtual disk, to cause a virtual machine controller located on the selected host machine to store the snapshot on a first storage device associated with the selected host machine, wherein the snapshot comprises metadata comprising location information associating the selected host machine with a server host machine, wherein the location information includes an identity of an FSVM providing access to a second storage device and a path name of the code image on the second storage device.