CN104077083A - New added storage method, device and system - Google Patents

Abstract

The invention provides a new storage method, device and system. It relates to the computer field; it solves the problem of inconvenient storage. The method includes: connecting the newly added storage disk to the HBA card of the host; re-scanning the SCSI disk device under the HBA card. The technical solution provided by the invention is suitable for server hosts, and realizes adding disk storage when the equipment works normally.

Description

Add storage method, device and system

technical field

The invention relates to the field of computers, in particular to a new storage method, device and system.

Background technique

When the server host installs the application, a new storage mapping LUN needs to be added, but the system cannot immediately recognize the LUN and install the application. The general method requires the server host to be restarted before the system can recognize it. Since server hosts are mainly used in the basic core information platforms of lifeline industries such as finance, telecommunications, energy, and transportation, which are related to national economic operation security, social security, and national strategic security, the operating system cannot be restarted during operation. Therefore, there is an urgent need for a method that can identify the newly added storage LUN and install the application under the premise of ensuring the normal operation of the business.

Contents of the invention

The invention provides a new storage method, device and system, which solves the problem of inconvenience of new storage.

A new storage method, including:

Connect the newly added storage disk to the host bus adapter (HBA) card of the host computer;

Rescan the Small Computer System Interface (SCSI) disk device under the HBA card

Preferably, the HBA card that connects the newly added storage disk to the host computer includes:

The newly added storage disk is connected to the HBA card of the host through the switch;

The host obtains the interface where the newly added storage disk is located.

Preferably, the HBA card connecting the newly added storage disk to the host also includes:

Record the World Wide Name (WWN) number of the newly added storage disk.

Preferably, rescanning the SCSI disk device under the HBA card, identifying the newly added storage disk includes:

Re-scan the HBA card interface;

Identify and add the newly added storage disk.

The present invention also provides a new storage device, including:

The connection module is used to connect the newly added storage disk to the HBA card of the host;

The scanning module is used to re-scan the SCSI disk device under the HBA card to identify the newly added storage disk.

Preferably, the scanning module includes:

An interface scanning unit, configured to re-scan the HBA card interface;

The storage identification unit is configured to identify and add the newly added storage disk.

The present invention also provides a newly added storage system, including a host, at least one HBA card is connected to the host, and the system also includes a newly added storage disk;

The HBA card is used to connect the newly added storage disk;

The host is configured to re-scan the SCSI disk device under the HBA card to identify the newly added storage disk.

Preferably, the system also includes a switch;

The HBA card is connected to the host through the switch.

The invention provides a new storage method, device and system, which connects the newly added storage disk to the HBA card of the host, re-scans the SCSI disk equipment under the HBA card, and identifies the newly added storage disk. It realizes the addition of disk storage when the device is working normally, and solves the problem of inconvenient addition of storage.

Description of drawings

FIG. 1 is a flow chart of a new storage method provided by Embodiment 1 of the present invention;

FIG. 2 is a schematic structural diagram of a newly added storage device provided by Embodiment 2 of the present invention.

Detailed ways

In order to solve the problem of inconvenient new storage, embodiments of the present invention provide a new storage method, device and system. Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.

First, Embodiment 1 of the present invention will be described with reference to the accompanying drawings.

The embodiment of the present invention proposes a new storage method applied to the server host (such as Inspur Tiansuo K1 host, K-UNIX system), which can identify the newly added LUN of the external storage without restarting the server host, and connect the external storage after adding the LUN It can be identified under the system without restarting the server host to ensure the normal operation of the system and business.

In the 2.6 kernel (K-UNIX kernel is 2.6.28), it has a dynamic LUN scanning mechanism. The HBA driver exports the scan function to the /sys directory, which can be used to rescan the SCSI disk devices under this interface. An embodiment of the present invention provides a newly added storage system, including:

(1) The server host involved in the embodiment of the present invention is installed with a K-UNIX operating system, and can identify newly added storage LUNs.

(2) The HBA card is installed in the PCIE slot of the IO switch module of the server host, and is used to connect external storage (such as newly added storage disks and other storage devices).

(3) Fiber optic switch, used to connect HBA cards and storage devices.

(4) A storage system for installing applications.

In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

1. In this step, connect the newly added storage disk to the HBA card of the host. The newly added storage disk is connected to the HBA card of the server host (hereinafter referred to as the host) through the switch (it can also be directly connected to the HBA card, generally connected through the switch), and the corresponding WWN number of the newly added storage disk is recorded.

2. Check the host x corresponding to the WWN number (x is the number of the host), that is, obtain the HBA card interface where the newly added storage disk is located. Specifically, the WWN number can be checked through the systool-c fc_host–v command.

3. View the SCSI corresponding to the original host and the host x that needs to be newly added for storage, and can find information such as channel, id, LUN, etc. host x is the HBA card interface. This step can be realized by viewing /proc/scsi/scsi.

4. Re-scan the SCSI disk device under the HBA card to identify the newly added storage disk.

In this step, scan the SCSI disk devices under the interface corresponding to the host x: In this step, in order to ensure the absolute normal operation of the system and the absolute security of stored data, the SCSI devices on other interfaces are not scanned. In this step, it can be realized by echo "CTL">/sys/class/scsi_host/hostx/scan.

x is the serial number of the SCSI host bus interface card (HBA, Host Bus Adapter);

C is the frequency (Channel) number of the HBA;

T is the SCSI target ID;

L is LUN (Logical Unit Number).

5. You can find the newly added LUN under the system through fdisk–l, for example, the newly added LUN is /dev/sdc1, you can partition it by pvcreat or fdisk command, and mount it after formatting with the mkfs.ext3 command (mount command) Use, or use with bare equipment.

Refer to Figure 1 for the specific process.

Embodiment 2 of the present invention will be described below with reference to the accompanying drawings.

An embodiment of the present invention provides a newly added storage device, the structure of which is shown in Figure 2, including:

Connection module 201, for connecting the newly added storage disk to the HBA card of the host;

The scanning module 202 is configured to re-scan the SCSI disk device under the HBA card to identify the newly added storage disk.

Preferably, the scanning module 202 includes:

An interface scanning unit 2021, configured to re-scan the HBA card interface;

The storage identification unit 2022 is configured to identify and add the newly added storage disk.

The present invention also provides a newly added storage system, including a host, at least one HBA card is connected to the host, and the system also includes a newly added storage disk;

The HBA card is used to connect the newly added storage disk;

The host is configured to re-scan the SCSI disk device under the HBA card to identify the newly added storage disk.

Preferably, the system also includes a switch;

The HBA card is connected to the host through the switch.

The embodiment of the present invention provides a new storage method, device and system, connect the newly added storage disk to the HBA card of the host, re-scan the SCSI disk device under the HBA card, and identify the newly added storage disk disk. It realizes the addition of disk storage when the device is working normally, and solves the problem of inconvenient addition of storage.

By using multiple mechanisms provided by the K-UNIX system to re-scan the SCSI bus and re-authenticate the SCSI devices added to the system. Under the condition of maintaining the normal operation of the business, it can identify the newly added storage and can identify it under the system, and can add new applications, which has the characteristics of fast, safe and stable.

To ensure the safe operation of the system, when scanning SCSI devices under an interface, only the interface corresponding to the newly added storage LUN can be scanned, realizing the scanning of storage under a specific path.

Those of ordinary skill in the art can understand that all or part of the steps of the above-mentioned embodiments can be implemented using a computer program flow, the computer program can be stored in a computer-readable storage medium, and the computer program can be run on a corresponding hardware platform (such as system, device, device, device, etc.), and when executed, includes one or a combination of the steps of the method embodiment.

Optionally, all or part of the steps in the above embodiments can also be implemented using integrated circuits, and these steps can be fabricated into individual integrated circuit modules, or multiple modules or steps among them can be fabricated into a single integrated circuit module accomplish. As such, the present invention is not limited to any specific combination of hardware and software.

The devices/functional modules/functional units in the above embodiments can be realized by general-purpose computing devices, and they can be concentrated on a single computing device, or distributed on a network composed of multiple computing devices.

When each device/functional module/functional unit in the above-mentioned embodiments is realized in the form of a software function module and sold or used as an independent product, it can be stored in a computer-readable storage medium. The computer-readable storage medium mentioned above may be a read-only memory, a magnetic disk or an optical disk, and the like.

Any person familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope described in the claims.

Claims (8)

1. newly add a storage means, it is characterized in that, comprising:

The memory disk newly adding is connected to host bus adaptor (HBA) card of main frame;

Rescan small computer system interface (SCSI) disk unit under described HBA card.

2. the storage means that newly adds according to claim 1, is characterized in that, the HBA card that the memory disk newly adding is connected to main frame comprises:

The memory disk newly adding is connected to the HBA card of main frame by switch;

Main frame obtains the interface at the described memory disk place newly adding.

3. the storage means that newly adds according to claim 2, is characterized in that, the described HBA card that the memory disk newly adding is connected to main frame also comprises:

Record the global unique name (WWN) number of the described memory disk newly adding.

4. the storage means that newly adds according to claim 2, is characterized in that, rescans the scsi disk equipment under described HBA card, identifies the described memory disk newly adding and comprises:

Rescan described HBA card interface;

Identify and add the described memory disk newly adding.

5. newly add a memory storage, it is characterized in that, comprising:

Link block, for being connected to the memory disk newly adding on the HBA card of main frame;

Scan module, for rescaning the scsi disk equipment under described HBA card, identifies the described memory disk newly adding.

6. the memory storage that newly adds according to claim 5, is characterized in that, described scan module comprises:

Interface scans unit, for rescaning described HBA card interface;

Storage recognition unit, for identifying and adding the described memory disk newly adding.

7. newly add a storage system, comprise main frame, described main frame is connected with at least one HBA card, and this system also comprises the memory disk newly adding;

Described HBA card, for connecting the described memory disk newly adding;

Described main frame, for rescaning the scsi disk equipment under described HBA card, identifies the described memory disk newly adding.

8. the storage system that newly adds according to claim 7, is characterized in that, this system also comprises switch;

Described HBA cartoon is crossed described switch and is connected to described main frame.