Method and device for managing disk space
A technology of disk space and management methods, applied in the Internet field, can solve the problems of limited hardware resources and unlimited capacity expansion, and achieve the effect of more capacity
Active Publication Date: 2012-10-03
无锡天云数据中心科技有限公司
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Problems solved by technology
[0004] The problem with the prior art is that only local disks can be used to create logical units. When the local disks are not enough, the disks can only be expanded by adding hardware. However, due to the limited hardware resources that can be used for expansion, it cannot be realized. Unlimited expansion of capacity as much as possible
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[0019] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, in which the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary, and are only used to explain the present invention, and cannot be construed as limiting the present invention.
[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection, a detachable connection, or an integral Ground connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific mean...
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The invention provides a method and device for managing disk space. The method comprises the steps that a logic block address assignment table is established and stored by a storage device, wherein associated information of a logic block address of each logic unit on a local disc and other storage devices are recorded in the logic block address assignment table, and the associated information of the logic block address comprises a logic block address value, data length and a path; an expansion command to a certain logic unit is received and whether the local disc has a free space or not is judged by the storage device; if not, whether unused logic units of other storage devices exist or not are searched in the logic block address assignment table by the storage device; and if so, the unused logic units are assigned to the logic unit. According to the method and the device for managing disk space, a plurality of storage devices are involved when the logic unit needs to be to expanded by recording and managing the logic block address assignment condition of the local disc and other storage devices and are not limited by local hardware resources, thereby the volume can be expanded infinitely as much as possible.
Description
Technical field [0001] The present invention relates to the field of Internet technology, in particular to a method and device for disk space management. Background technique [0002] SAN (Storage Area Network, storage area network) is a typical network storage structure. It is a high-speed network or sub-network that provides data transmission between a computer and a storage device. The storage device refers to one or more Disk devices used to store computer data. A SAN network is composed of the communication structure responsible for network connections, the management layer responsible for organizing connections, storage components and computer systems to ensure the security and strength of data transmission. [0003] iSCSI (Internet Small Computer System Interface, small computer system interface) is a TCP / IP-based protocol used to establish and manage interconnections between storage devices, hosts, and clients, and to create SANs. The main function of iSCSI is the encapsu...
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IPC IPC(8): G06F12/06
Inventor 杨万里周亮
Owner 无锡天云数据中心科技有限公司