System and method for on-the-fly migration of server from backup
First Claim
1. A method of migrating a server, the method comprising:
- creating a block-based image of a storage device of a first server, the image comprising a bitmap;
while the first server is hot-migrated on-the-fly and a second server is started during the hot-migration, restoring, from the image, to the second server, those blocks of an operating system data that are needed to start the second server;
configuring the second server'"'"'s operating system to match a hardware configuration of the second server;
using at least some of the image data as a local drive data of the second server;
running the second server using the image data, the restored blocks of the operating system data and the configured operating system; and
while the second server is running, based on the bitmap, restoring unaltered portions of remaining data from the image.
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0 Petitions
Accused Products
Abstract
A system, method and computer program product for migrating a server include creating an image of a storage device of a first server; during execution of a boot loader on a second server, starting an initialization application that at least partially restores, to a storage device of the second server, operating system data from the image; analyzing a hardware configuration of the second server; modifying at least one driver of an operating system based on the analyzed hardware to enable the operating system of the second server to interface to the storage device of the second server; rebooting the second server using the at least partially restored operating system data; and restoring unaltered portions of remaining data from the image. The second server identification and/or authentication data stored on the image is updated before the rebooting. Identification data of the second server is at least partially replaced with corresponding data stored on the image. The image is unchanged until completion of the restoring step. The restoration step uses an incremental image of the storage device. A boot loader is started in case of failure of the first server.
103 Citations
35 Claims
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1. A method of migrating a server, the method comprising:
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creating a block-based image of a storage device of a first server, the image comprising a bitmap; while the first server is hot-migrated on-the-fly and a second server is started during the hot-migration, restoring, from the image, to the second server, those blocks of an operating system data that are needed to start the second server; configuring the second server'"'"'s operating system to match a hardware configuration of the second server; using at least some of the image data as a local drive data of the second server; running the second server using the image data, the restored blocks of the operating system data and the configured operating system; and while the second server is running, based on the bitmap, restoring unaltered portions of remaining data from the image. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for improving system stability after failure of a main server, the method comprising:
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creating a backup of files of the main server and a corresponding bitmap; after failure of the main server, repairing the main server; restoring, from the backup, on a reserve server, operating system data; configuring an operating system of the reserve server to match a hardware configuration of the reserve server; running the reserve server using the backup and the configured operating system; hot-migrating contents of the reserve server to the main server using marked section of the bitmap to restore the unaltered portions of remaining data from the image; and starting the main server during the hot migration process. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22)
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23. A method of running a virtual server from image, the method comprising:
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creating a block-based image of a storage device of a first server; creating a virtual storage drive with a dedicated driver, wherein the virtual storage drive includes the block-based image of the first server and storing data for a virtual server; configuring the virtual server; using data from the image to operate the virtual server, without full restoration of the image data to the virtual server; using the storage to store data that changed during operation of the virtual server; and starting an I/O filter for intercepting write and read requests to a disk of the virtual server and redirecting them to the virtual storage drive. - View Dependent Claims (24, 25, 26, 27)
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28. A method of running a virtual server farm having a plurality of physical servers, the method comprising:
- creating a block-based image of a storage device of a first physical server;
creating a virtual storage drive with a dedicated driver, wherein the virtual storage drive includes the block-based image of the first physical server, and also includes local storage of a second physical server;
configuring the second physical server'"'"'s operating system;
using data from the image of the second physical server to operate the second physical server, without full restoration of the image data to the second physical server;
using the local storage to store data that changed during operation of the second physical server; and
starting an I/O filter for intercepting write and read requests to a disk of the second physical server and redirecting them to the virtual storage drive. - View Dependent Claims (29, 30, 31, 32)
- creating a block-based image of a storage device of a first physical server;
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33. A method of running a virtual machine from an image, the method comprising:
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creating a block-based image of a storage device of a hardware node; creating a virtual storage drive with a junction driver, wherein the virtual storage drive includes an image of a virtual machine that is based on the block-based image of the hardware node, and also includes storage of the virtual machine to store data that changed during operation of the virtual machine; configuring the virtual machine; using data from the image to operate the virtual machine, without full restoration of the image data to the virtual machine; and starting an I/O filter for intercepting write and read requests to a disk of the virtual machine and redirecting them to the virtual storage drive. - View Dependent Claims (34, 35)
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Specification