TWI715066B - Method for locating a hard disk physical installation location in cluster storage system - Google Patents

Abstract

A method for locating a hard disk physical installation location in Cluster Storage System. The cluster storage system includes a host and at least one storage device. The storage device includes at least one hard disk expansion interface and a plurality of hard disks connected to each hard disk expansion interface. The host obtains the dedicated device name for each hard disk by using the nvme list commands on the Linux, and using the dedicated device name and readlink command of each hard disk, the system installation path of the hard disk corresponding to each dedicated device name is obtained, and finally, according to the hard disk slot correspondence table stored in the host and the system installation path corresponding to each hard disk, obtaining a hard disk location correspondence table including the physical slot name of the hard disk slot.

Description

Method for locating physical installation position of hard disk of cluster storage system

The present invention relates to a method for locating hard disks of storage devices, in particular to a method for locating physical installation positions of hard disks in a clustered storage system.

The current cluster storage system includes a host and at least one storage device connected to the host. The host is installed with a Linux operating system to operate the host itself and the storage device. Among them, the storage device includes multiple hard disk expansion interfaces (Expander), and a non-volatile memory host controller interface specification (NVM Express, Non-Volatile Memory Host Controller Interface Specification) installed on each hard disk expansion interface The solid-state drive (SSD, Solid-state drive).

However, the existing technology for non-volatile memory host controller interface specifications for solid-state hard disks, it is impossible to know that the host’s Linux operating system is related to each The information of the solid state drive corresponds to which solid state drive is in the storage device. Therefore, when the technical developer finds that there is an error in the information of the solid-state drive in the Linux operating system of the host and the corresponding solid-state drive must be repaired, the technical developer has no way of knowing which one is in the storage device. The solid-state drive has an error that prevents subsequent maintenance.

Therefore, the object of the present invention is to provide a method for locating the physical installation location of hard disks in a cluster storage system.

Therefore, the method for locating the physical installation position of the hard disk of the clustered storage system of the present invention is implemented by the clustered storage system including a host and a storage device electrically connected to the host. The host is installed with an operating system for operating the host and the storage device. The storage device includes at least one hard disk expansion interface and a plurality of hard disks electrically connected to the at least one hard disk expansion interface, and each hard disk expansion interface includes a plurality of hard disk plugs for installing the hard disks groove. The host stores a corresponding table of hard disk slot corresponding to each hard disk expansion interface. Among them, each hard disk slot mapping table includes the address of the corresponding hard disk expansion interface, and a first virtual slot name and a physical slot of each hard disk slot of the corresponding hard disk expansion interface. Slot name.

The method for locating the physical installation position of the hard disk of the cluster storage system includes a step (A), a step (B), and a step (C).

The step (A) is to obtain a dedicated device name uniquely corresponding to each hard disk in the operating system through the host.

The step (B) is for each hard disk, by the host, according to the dedicated device name corresponding to the hard disk, obtain the second virtual slot name corresponding to the dedicated device name and an installation corresponding dedicated The address of the hard disk expansion interface of the hard disk of the device name.

This step (C) is for each hard disk, with the host, according to the hard disk slot mapping table, the name of the second virtual slot corresponding to the dedicated device name of the hard disk, and the expansion interface of the hard disk Address, obtain a hard disk location correspondence table including the dedicated device name of the hard disk and the physical slot name of the corresponding hard disk slot.

The effect of the present invention is that after the host obtains the name of the dedicated device corresponding to each hard disk, for each hard disk, according to the name of the dedicated device corresponding to the hard disk, obtain the first device name corresponding to the dedicated device name. Two virtual slot names and an address of the hard disk expansion interface for the hard disk corresponding to the dedicated device name. Finally, according to the table of all hard disk slots, the second virtual corresponding to the dedicated device name of each hard disk The slot name and the address of the expansion interface of the hard disk, and the hard disk location mapping table is obtained. The technical developer can know that each hard disk in the operating system corresponds to the storage device according to the hard disk location mapping table. The physical installation location for subsequent maintenance.

100: Clustered storage system

1: host

2: storage equipment

21: Hard Disk Expansion Interface

22: Hard Disk

51~53: Steps

521, 522: Substep

531~533: substeps

61, 62: steps

71~73: Steps

Other features and effects of the present invention will be clearly presented in the embodiments with reference to the drawings, in which: FIG. 1 is a block diagram illustrating a method for implementing the present invention to locate the physical installation position of a hard disk in a clustered storage system An embodiment of the cluster storage system; FIG. 2 is a flowchart illustrating a hard disk positioning procedure of this embodiment; FIG. 3 is a flowchart illustrating how the hard disk positioning procedure obtains a corresponding one of a hard disk The name of the second virtual slot, the address of the hard disk expansion interface where the hard disk is installed, and the detailed flow of the hard disk address; Figure 4 is a flowchart illustrating how the hard disk positioning process obtains a hard disk The detailed flow of the positioning correspondence table; FIG. 5 is a flowchart of a first hard disk management program of this embodiment; and FIG. 6 is a flowchart of a second hard disk management program of this embodiment.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are represented by the same numbers.

Referring to FIG. 1, a cluster storage system 100 that implements an embodiment of the method for locating physical installation positions of hard disks in a cluster storage system of the present invention includes a host 1 and a storage device 2 electrically connected to the host 1.

The host 1 is installed with an operation for operating the host 1 and the storage device 2 业 system. Among them, the operating system is Linux.

The host 1 pre-stores the corresponding table of the hard disk slot corresponding to each hard disk expansion interface 21 (Expander), and an indication of the hard disk to be installed in each hard disk slot of each hard disk expansion interface 21 Corresponding table of hard disk model specifications for disk 22 model specifications Each hard disk slot mapping table includes the one-bit address (PCIe address) of the corresponding hard disk expansion interface 21 and a first virtual slot name of each hard disk slot of the corresponding hard disk expansion interface 21 And a physical slot name. It is worth noting that the name of the first virtual slot of each hard disk slot is defined according to the address of the corresponding hard disk slot, and part of the first virtual slot name and its corresponding The addresses of the hard disk slots are at least partially the same. In particular, in the preferred embodiment, each hard disk slot mapping table can also include a physical interface name of the corresponding hard disk expansion interface 21, so that technical developers can quickly learn about each hard disk slot The name of the physical interface corresponding to the mapping table. In another preferred embodiment, the host 1 also pre-stores a bridge slot correspondence table. The bridge slot correspondence table includes the name of the physical interface corresponding to each hard disk expansion interface 21, and each Address names of multiple bridges of the hard disk expansion interface 21.

For example, one of the corresponding tables of the hard disk slots stored in the host 1 is shown in Table 1, and the address, the name of the physical interface, the name of the first virtual slot and the The naming method of the physical slot name is only used for the convenience of explanation in this manual, not the actual naming method.

The storage device 2 includes at least one hard disk expansion interface 21 and a plurality of hard disks 22 electrically connected to the at least one hard disk expansion interface 21. Each hard disk expansion interface 21 includes a plurality of hard disk slots for installing the hard disks 22. Among them, each hard disk 22 corresponds to a unique dedicated device name (NVMe Node) in the operating system.

In this embodiment, the implementation of the host 1 is, for example, a computer with general computing functions, but it is not limited to this.

In this embodiment, the implementation of each hard disk 22 is, for example, a solid state hard disk, but it is not limited thereto.

In the following, the embodiment of the method for locating the physical installation position of the hard disk of the cluster storage system of the present invention is applied to automatically execute when the boot is completed and enters the operating system execution phase, or the operating system of the host 1 detects It is automatically executed when a new storage device 2 is installed, so as to explain the operation details of the host 1 of the cluster storage system 100 and the location management of each component of the at least one storage device 2. The method for locating the physical installation position of the hard disk of the cluster storage system includes a hard disk locating program, a first hard disk management program, and a second hard disk management program.

Referring to FIG. 2, the hard disk positioning program is used to locate the physical installation position of each hard disk 22 and includes a step 51, a step 52, and a step 53.

In step 51, the host 1 executes a name specification acquisition command related to the hard disk name and specification in the operating system to obtain the unique device name of each hard disk 22 in the operating system, and A model specification information, where the name specification acquisition command is "nvme list". In this embodiment, the host 1 executes "nvme list" on Linux to obtain the name of the dedicated device corresponding to each hard disk 22 and the model specification information. For example, if the storage device 2 is equipped with two hard disk expansion interfaces 21, and each hard disk expansion interface 21 is equipped with twenty hard disks 22 (a total of forty hard disks 22), then the host 1 After running "nvme list", you will get the current dedicated device name corresponding to each hard disk 22 in the operating system (for example: nvme0, nvme1, nvme2,..., nvme39), and the corresponding name of each dedicated device The specification information of the model. In particular, the model specification information package Contains at least one of a product serial number (Serial Number) and a device model name (Model Name), but not limited to this. Among them, it should be particularly noted that the naming methods of the special device names exemplified above are only used for the convenience of description in this manual, and are not the actual naming methods in Linux.

In this step 52, for each hard disk 22, the host 1 obtains the second virtual slot name corresponding to the dedicated device name according to the dedicated device name corresponding to the hard disk 22, and an installation corresponding to the dedicated The address of the hard disk expansion interface 21 of the hard disk 22 of the device name, and the address of the hard disk 22 corresponding to the dedicated device name.

Referring to FIG. 3, it is worth noting that in this embodiment, the step 52 further includes a sub-step 521 and a sub-step 522.

In this sub-step 521, for each hard disk 22, the host 1 executes a path acquisition command related to the installation path in the operating system according to the dedicated device name corresponding to the hard disk 22 to obtain a corresponding dedicated device The system installation path of the device name, where the path acquisition command is "readlink". In this embodiment, the host 1 executes "readlink-f/sys/class/nvme/the dedicated device name" on Linux to obtain the current system installation of each hard disk 22 in the operating system. Set the path. For example, after the host 1 executes the "readlink-f/sys/class/nvme/nvme9" command, it will obtain the system installation path corresponding to the special device name nvme9 "../../devices/pci0000 : 17/0000: 17:00.0/0000: 18:00.0/0000 : 19:0d.0/0000:23:00.0/nvme/nvme9".

In the sub-step 522, for each hard disk 22, the host 1 obtains the name of the second virtual slot corresponding to the dedicated device name and an installation corresponding to the system installation path corresponding to the hard disk 22 The address of the hard disk expansion interface 21 of the hard disk 22 of the dedicated device name, and the address of the hard disk 22 corresponding to the dedicated device name. In particular, the second virtual slot name is defined according to the address of the hard disk slot in the system installation path corresponding to the dedicated device name, and part of the second virtual slot name and The addresses of the corresponding hard disk slots are at least partially the same. For example, the system installation path corresponding to the hard disk 22 with the dedicated device name nvme9 is "../../devices/pci0000:17/0000:17:00.0/0000:18:00.0/0000:19 :0d.0/0000:23:00.0/nvme/nvme9". Where "0000.19.0d.0" is the address of the hard disk slot of the hard disk 22 corresponding to the dedicated device name nvme9, so as to use "0d.0" as the second corresponding to the dedicated device name nvme9 The virtual slot name, "0000:17:00.0" and "0000:18:00.0" can each be used as the address of the hard disk expansion interface 21 for installing the hard disk 22 corresponding to the special device name nvme9, "0000:23 :00.0" is the address of the hard disk 22 corresponding to the dedicated device name nvme9. It is worth noting that here "0000:17:00.0" is the address of the hard disk expansion interface 21 of the hard disk 22 corresponding to the special device name nvme9 relative to the upper level hardware (for example: bridge) , And "0000:18:00.0" is the hard disk expansion interface 21 for installing the hard disk 22 corresponding to the special device name nvme9. The address of the first-level hardware (for example: hard disk 22), so "0000:17:00.0" and "0000:18:00.0" can each be the hard disk with hard disk 22 corresponding to the special device name nvme9 Expand the address of interface 21.

In this step 53, for each hard disk 22, the host 1 uses the hard disk slot mapping table, the second virtual slot name corresponding to the dedicated device name of the hard disk 22, and the hard disk expansion interface 21 To obtain a hard disk location correspondence table containing the dedicated device name of the hard disk 22 and the physical slot name of the corresponding hard disk slot. It is worth noting that, in other embodiments, the hard disk location correspondence table may also include the address of the hard disk 22 and the physical interface name of the hard disk expansion interface 21 corresponding to the dedicated device name of the hard disk 22 And the physical slot name of the corresponding hard drive slot.

4, it is worth noting that in this embodiment, step 53 further includes a sub-step 531, a sub-step 532, and a sub-step 533.

In the sub-step 531, for each hard disk 22, the host 1 obtains a hard disk slot correspondence table from the hard disk slot correspondence table according to the address of the hard disk expansion interface 21 corresponding to the dedicated device name of the hard disk 22 The target hard disk slot mapping table corresponding to the hard disk 22, and the physical interface name corresponding to the target hard disk slot mapping table. The address of the hard disk expansion interface 21 corresponding to the target hard disk slot mapping table matches the address of the hard disk expansion interface 21 corresponding to the dedicated device name of the hard disk 22. For example, suppose that the address of the hard disk expansion interface 21 corresponding to the dedicated device name nvme9 of the hard disk 22 obtained in step 52 is "0000:17:00.0" and "0000:18:00.0". In the first one, the obtained target hard disk slot correspondence table is Table 1 and its corresponding physical interface name "A01". In another preferred embodiment, the host 1 can also use the dedicated device name as the bridge address name "pci0000:17" corresponding to nvme9 (taken from the system installation path corresponding to nvme9) and The bridge slot correspondence table searches for the physical interface name "A01" corresponding to the dedicated device name nvme9.

In this sub-step 532, for each hard disk 22, the host 1 corresponds to the target hard disk slot corresponding to the hard disk 22 according to the second virtual slot name corresponding to the dedicated device name of the hard disk 22 Among the physical slot names in the table, a target physical slot name corresponding to the first virtual slot name that matches the second virtual slot name is obtained. For example, suppose that according to the hard disk 22 corresponding to the dedicated device name nvme9, the obtained target hard disk slot mapping table is shown in Table 1 (corresponding to the physical interface name of the hard disk expansion interface 21: A01), and by the The second virtual slot name obtained by the path acquisition command is "0d.0", then the first virtual slot name that matches the second virtual slot name is compared in the target hard disk slot correspondence table It is also "0d.0", and its corresponding target entity slot name is "Slot#4".

In the sub-step 533, for each hard disk 22, the host 1 obtains the physical interface name of the target hard disk slot correspondence table corresponding to the dedicated device name of the hard disk 22 and the target physical slot name. Hard disk location mapping table. For example, suppose that the target hard disk is obtained according to the hard disk 22 corresponding to the dedicated device name nvme9 The disk slot mapping table is shown in Table 1 (the physical interface name corresponding to the hard disk expansion interface 21: A01), and the target physical slot name obtained is "Slot#4". The technical research and development personnel locate the corresponding table according to the hard disk It can be seen that the physical installation location of the hard disk 22 corresponding to the special device name nvme9 is installed on the hard disk slot with the physical slot name "Slot#4". In more detail, the special device name is nvme9 The physical installation location of the hard disk 22 is installed in the hard disk slot with the physical interface name "A01" and the physical slot name of the hard disk expansion interface 21 is "Slot#4", which means it should be dedicated The physical installation location of the hard disk 22 with the device name nvme9 is installed in the physical slot name of the hard disk expansion interface 21 with one of the addresses "0000:17:00.0" and "0000:18:00.0" "Slot#4" on.

Referring to FIG. 5, the first hard disk management program manages whether all hard disks 22 in the storage device 2 are installed incorrectly, and includes a step 61 and a step 62.

In step 61, the host 1 determines whether there is at least one installation error in the hard disks 22 according to the hard disk model specification correspondence table and the corresponding model and specification information of each hard disk 22 obtained in step 51 Misinstalled hard disk 22. When the host 1 determines that there is no mis-installed hard disk 22 among the hard disks 22, the first hard disk management program ends; when the host 1 determines that the at least one mis-installed hard disk 22 exists When the hard disk is 22, proceed to step 62 of the process.

In this step 62, for each misinstalled hard disk 22, the host 1 locates the hard disk according to the name of the dedicated device corresponding to the misinstalled hard disk 22 and the hard disk location correspondence table At least one of the physical interface name of the hard disk expansion interface 21 corresponding to the incorrectly installed hard disk 22 and the physical slot name of the hard disk slot to which the incorrectly installed hard disk 22 is installed.

Referring to FIG. 6, the second hard disk management program manages whether all hard disks 22 in the storage device 2 are faulty or damaged, and includes a step 71, a step 72, and a step 73.

In the step 71, for each hard disk 22, the host 1 executes a performance acquisition command related to the performance of the hard disk in the operating system according to the address of the hard disk 22 obtained in the sub-step 522 to obtain It should be the performance information of the hard disk 22, where the performance acquisition command is "lspci", and the performance information includes the link speed and bandwidth of the hard disk 22, but is not limited to this. In this embodiment, the host 1 executes "lspci -s the address of the hard disk 22 -vvv" on Linux to obtain the performance information corresponding to each hard disk 22. For example, if the address corresponding to the hard disk 22 corresponding to the dedicated device name is "23", after the host 1 executes the "lspci-s 23-vvv" command, it will get the dedicated device name corresponding to nvme9 Performance information.

In this step 72, the host 1 determines whether there is at least one damaged hard disk 22 whose performance value indicated by the corresponding performance information is lower than a preset value among the hard disks 22. When the host 1 determines that there is no damaged hard disk 22 among the hard disks 22, the second hard disk management program ends; when the host 1 determines that the at least one damaged hard disk 22 exists in the hard disks 22 When the hard disk is 22, proceed to step 73 of the process.

In this step 73, for each damaged hard disk 22, the host 1 locates the damaged hard disk 22 according to the dedicated device name corresponding to the damaged hard disk 22 and the hard disk location correspondence table. At least one of the physical interface name of the hard disk expansion interface 21 and the name of the physical slot corresponding to the hard disk slot where the damaged hard disk 22 is installed.

In summary, the method of the present invention for locating the physical installation position of the hard disk of the cluster storage system, and when the host 1 is running in the operating system, the corresponding table of all hard disk slots and the dedicated hard disk 22 The name of the second virtual slot corresponding to the device name and the address of the hard disk expansion interface 21 automatically obtain the hard disk location correspondence table, so that technical developers can learn about the operation according to the hard disk location correspondence table. Each hard disk 22 in the system corresponds to the physical installation location in the storage device, and can also be used in the host 1 according to the hard disk model specification correspondence table, the model specification information corresponding to each hard disk 22, and each hard disk The performance information of the disk 22 automatically detects any misinstalled hard disk 22 and/or the damaged hard disk 22, and physically install all the misinstalled hard disk 22 and/or all the damaged hard disk 22 The location is displayed on the screen, or a notification message (E-mail) is sent to inform the technical developers for subsequent maintenance. Therefore, it can indeed achieve the purpose of the invention.

However, the above are only examples of the present invention. When the scope of implementation of the present invention cannot be limited by this, all simple equivalent changes and modifications made in accordance with the scope of the patent application of the present invention and the content of the patent specification still belong to Within the scope of the patent for the present invention.

51~53··· Step

Claims (7)

A method for locating a physical installation position of a hard disk of a clustered storage system is implemented by the clustered storage system including a host and a storage device electrically connected to the host. The host is installed with a device for operating the host and the host An operating system of a storage device, the storage device includes at least one hard disk expansion interface, and a plurality of hard disks electrically connected to the at least one hard disk expansion interface, each hard disk expansion interface includes a plurality of devices for installing the The hard disk slot of the hard disk, the host stores the corresponding table of hard disk slot corresponding to each hard disk expansion interface, and each hard disk slot correspondence table contains the address and one of the corresponding hard disk expansion interface. Physical interface name, and a first virtual slot name and a physical slot name of each hard disk slot of the corresponding hard disk expansion interface. The method of locating the physical installation position of the hard disk of the cluster storage system includes The following steps: (A) Obtain a dedicated device name uniquely corresponding to each hard disk in the operating system through the host; (B) For each hard disk, through the host, according to the corresponding hard disk To obtain the name of the second virtual slot corresponding to the name of the dedicated device and the address of the hard disk expansion interface for the hard disk corresponding to the name of the dedicated device. Step (B) also includes the following steps (B-1) For each hard disk, use the host to execute the readlink command according to the dedicated device name corresponding to the hard disk to obtain the system installation path corresponding to the dedicated device name, and (B-2 ) For each hard disk, the host obtains the second virtual device corresponding to the dedicated device name according to the system installation path corresponding to the hard disk. The name of the virtual slot and the address of the hard disk expansion interface for the hard disk corresponding to the dedicated device name; and (C) For each hard disk, with the host, according to the corresponding table of the hard disk slot, The name of the second virtual slot corresponding to the dedicated device name of the hard disk and the address of the hard disk expansion interface are obtained to obtain a dedicated device name containing the hard disk and the hard disk expansion corresponding to the dedicated device name of the hard disk The physical interface name of the interface and the corresponding table of the hard disk location of the physical slot name of the corresponding hard disk slot. The method for locating a physical installation position of a hard disk in a clustered storage system according to claim 1, wherein the step (C) further includes the following steps: (C-1) For each hard disk, by the host, According to the address of the hard disk expansion interface corresponding to the dedicated device name of the hard disk, obtain the target hard disk slot mapping table corresponding to the hard disk from the hard disk slot mapping tables; (C-2) For each hard disk, by the host, according to the second virtual slot name corresponding to the dedicated device name of the hard disk, from the physical slot names in the corresponding target hard disk slot mapping table of the hard disk , Obtain a target physical slot name corresponding to the first virtual slot name that matches the second virtual slot name; and (C-3) For each hard disk, by the host, according to the hard disk The target physical slot name of the target hard disk slot correspondence table corresponding to the dedicated device name obtains the hard disk location correspondence table. The method for locating a physical installation position of a hard disk in a clustered storage system according to claim 1, wherein, in the step (B), for each hard disk, by the host, according to In addition to the name of the second virtual slot corresponding to the name of the dedicated device and the address of the hard disk expansion interface for the hard disk corresponding to the name of the dedicated device, the name of the dedicated device corresponding to the hard disk is also obtained. The address of the hard disk corresponding to the dedicated device name; after this step (C), the following steps are included: (D) For each hard disk, the host obtains the corresponding hard disk address according to the hard disk address Performance information of the hard drive. The method for locating physical installation positions of hard disks in a clustered storage system according to claim 3, wherein after the step (D), the method further includes the following steps: (E) determining the hard disks by the host Whether there is at least one damaged hard disk whose performance value indicated by the corresponding performance information is lower than a preset value; and (F) when the host determines that the at least one damaged hard disk exists among the hard disks At this time, for each damaged hard disk, the host uses the dedicated device name corresponding to the damaged hard disk and the hard disk location correspondence table to locate the physical slot name of the damaged hard disk. For the method for locating the physical installation position of the hard disk of the cluster storage system as described in claim 1, the host also stores an indication of the hard disk to be installed in each hard disk slot of each hard disk expansion interface The corresponding table of hard disk model specifications of model specifications. In this step (A), in addition to obtaining the name of the dedicated device corresponding to each hard disk through the host, the model corresponding to each hard disk is also obtained Specification information; after this step (C), it also includes the following steps: (G) Using the host to determine whether there is at least one incorrectly installed hard disk in the hard disk according to the hard disk model specification correspondence table and the corresponding model and specification information of each hard disk; and (H ) When the host determines that there is at least one misinstalled hard disk among the hard disks, for each misinstalled hard disk, with the host, according to the name of the dedicated device corresponding to the misinstalled hard disk and the hard disk Locate the corresponding table to locate the physical slot name of the mis-installed hard disk. The method for locating a physical installation location of a hard disk in a cluster storage system according to claim 5, wherein, in step (A), the host executes an nvme list command to obtain the dedicated device corresponding to each hard disk Name and specification information of the model. The method for locating a physical installation position of a hard disk in a cluster storage system as recited in claim 3, wherein, in the step (D), for each hard disk, the host is based on the address corresponding to the hard disk , And execute the lspci command to obtain the performance information of the corresponding hard disk.

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