CN101776984A - Method and device for processing disk roam in storage system - Google Patents
Method and device for processing disk roam in storage systemDownload PDFInfo
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Abstract
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Description
Translated fromChinese技术领域technical field
本发明涉及存储领域，尤其涉及一种在存储系统中处理磁盘漫游的方法和装置。The invention relates to the field of storage, in particular to a method and device for processing disk roaming in a storage system.
背景技术Background technique
中高端存储系统通常由多控制器和多个磁盘柜组成，其中每个控制器均挂接多个磁盘柜(Just Bundle Of Disks，JBOD)，其中每个磁盘柜上有多个槽位，每个槽位上可部署一块磁盘。如果用户从槽位上取出磁盘后放到了错误的槽位，或者在开机状态下进行磁盘的插拔，会出现磁盘与用户界面上盘符不一致的问题，该现象是属于磁盘漫游问题。一旦出现磁盘漫游问题，在磁盘基础上利用磁盘盘符构建冗余磁盘阵列(Redundant Array of IndependentDisk，RAID)将会产生问题，造成用户无法访问磁盘中的数据。A mid-to-high-end storage system usually consists of multiple controllers and multiple disk cabinets, where each controller is connected to multiple disk cabinets (Just Bundle Of Disks, JBOD), where each disk cabinet has multiple slots, each One disk can be deployed in the slot. If the user removes the disk from the slot and puts it in the wrong slot, or inserts or removes the disk while the computer is powered on, there will be a discrepancy between the disk and the drive letter on the user interface. This phenomenon is a disk roaming problem. Once the problem of disk roaming occurs, building a redundant array of independent disks (Redundant Array of Independent Disk, RAID) on the basis of the disk will cause problems, causing users to be unable to access the data in the disk.
为避免磁盘漫游后引起RAID信息错误，现有技术中，在初始化磁盘时，预先存储该磁盘的备用RAID信息。在发生磁盘漫游后，原RAID信息瓦解后，从磁盘提取已存储的备用RAID信息，重建RAID信息的，但是采用上述方法，减少了磁盘上用户可使用的存储空间。In order to avoid RAID information errors caused by disk roaming, in the prior art, when a disk is initialized, the backup RAID information of the disk is stored in advance. After the disk roaming occurs, after the original RAID information is disintegrated, the stored backup RAID information is extracted from the disk to rebuild the RAID information, but the above method reduces the storage space available to the user on the disk.
发明内容Contents of the invention
本发明提供一种在存储系统中处理磁盘漫游的方法，构建RAID信息的实现方式简单。The invention provides a method for processing disk roaming in a storage system, and the realization method of constructing RAID information is simple.
为达到上述发明目的，本发明提供了如下技术方案：In order to achieve the above object of the invention, the present invention provides the following technical solutions:
一种在存储系统中处理磁盘漫游的方法，包括：A method for handling disk roaming in a storage system, comprising:
当存储系统发生磁盘漫游时，将预先设置的未发生磁盘漫游时磁盘的盘符和/或槽位更新为该磁盘当前的盘符和/或槽位；When disk roaming occurs in the storage system, update the preset drive letter and/or slot of the disk when no disk roaming occurs to the current drive letter and/or slot of the disk;
根据更新后的盘符和/或槽位以及未发生磁盘漫游时的RAID信息，构建冗余磁盘阵列(RAID)信息。Construct redundant disk array (RAID) information according to the updated drive letter and/or slot and the RAID information when no disk roaming occurs.
进一步的，所述方法还具有如下特点：所述磁盘对应的盘符和槽位是通过如下方式得到的：Further, the method also has the following characteristics: the drive letter and the slot corresponding to the disk are obtained in the following manner:
获取盘符和槽位的SAS地址以及盘符与磁盘的对应关系；Obtain the SAS address of the drive letter and slot and the correspondence between the drive letter and the disk;
根据SAS地址对盘符和槽位进行匹配，得到盘符和槽位的对应关系；Match the drive letter and the slot according to the SAS address to obtain the corresponding relationship between the drive letter and the slot;
根据盘符，对所述盘符和槽位的对应关系以及所述盘符与磁盘的对应关系，得到磁盘、盘符和槽位之间的映射关系。According to the disk letter, the correspondence between the disk letter and the slot and the correspondence between the disk letter and the disk, the mapping relationship between the disk, the disk letter and the slot is obtained.
进一步的，所述方法还具有如下特点：所述磁盘是通过主键(LU)进行标识的。Further, the method also has the following characteristics: the disk is identified by a primary key (LU).
进一步的，所述方法还具有如下特点：所述构建RAID信息具体包括：Further, the method also has the following characteristics: the constructing RAID information specifically includes:
采用更新后的盘符以及该更新盘符后磁盘对应的RAID信息构建RAID。Use the updated drive letter and the RAID information corresponding to the disk after the updated drive letter to build a RAID.
一种控制器，包括：A controller comprising:
更新模块，用于当存储系统发生磁盘漫游时，将预先设置的未发生磁盘漫游时磁盘的盘符和/或槽位更新为该磁盘当前的盘符和/或槽位；An update module, configured to update the preset drive letter and/or slot of the disk when disk roaming does not occur to the current drive letter and/or slot of the disk when disk roaming occurs in the storage system;
构建模块，用于根据更新后的盘符和/或槽位以及未发生磁盘漫游时的RAID信息，构建冗余磁盘阵列(RAID)信息。The construction module is used for constructing redundant disk array (RAID) information according to the updated drive letter and/or slot and the RAID information when no disk roaming occurs.
进一步的，所述控制器还具有如下特点：所述控制器还包括：Further, the controller also has the following characteristics: the controller also includes:
获取模块，用于获取盘符和槽位的SAS地址以及盘符与磁盘的对应关系，并根据SAS地址对盘符和槽位进行匹配，得到盘符和槽位的对应关系，再根据盘符，对所述盘符和槽位的对应关系以及所述盘符与磁盘的对应关系，得到磁盘、盘符和槽位之间的映射关系。The acquisition module is used to obtain the SAS address of the drive letter and the slot and the corresponding relationship between the drive letter and the disk, and match the drive letter and the slot according to the SAS address to obtain the corresponding relationship between the drive letter and the slot, and then according to the drive letter , according to the corresponding relationship between the drive letter and the slot and the corresponding relationship between the drive letter and the disk, the mapping relationship between the disk, the drive letter and the slot is obtained.
进一步的，所述控制器还具有如下特点：所述控制器通过主键(LU)标识磁盘。Further, the controller also has the following feature: the controller identifies the disk through a primary key (LU).
进一步的，所述控制器还具有如下特点：Further, the controller also has the following characteristics:
所述构建模块具体用于：采用更新后的盘符以及该更新盘符后磁盘对应的RAID信息构建RAID。The construction module is specifically used for constructing RAID by using the updated drive letter and the RAID information corresponding to the disk after the updated drive letter.
本发明提供的技术方案，在存储系统发生磁盘漫游时，将未发生磁盘漫游时的盘符和/或槽位更新为该磁盘当前的盘符和/或槽位，再根据更新后的盘符和/或槽位以及未发生磁盘漫游时的RAID信息，构建冗余磁盘阵列(RAID)信息，保证未发生磁盘漫游时的RAID可用，采用可用的RAID信息构建存储系统新的RAID信息，实现方式简单且无需预先在磁盘占用存储空间存储备用的RAID信息，提高了磁盘的可用空间。In the technical solution provided by the present invention, when disk roaming occurs in the storage system, the drive letter and/or slot when no disk roaming occurs is updated to the current drive letter and/or slot of the disk, and then according to the updated drive letter And/or slots and RAID information when disk roaming does not occur, construct redundant disk array (RAID) information, ensure that RAID is available when disk roaming does not occur, and use available RAID information to construct new RAID information of the storage system. Implementation method It is simple and does not need to store spare RAID information in the storage space occupied by the disk in advance, which improves the available space of the disk.
附图说明Description of drawings
图1为本发明中在存储系统中处理磁盘漫游的方法流程图；Fig. 1 is a flowchart of a method for processing disk roaming in a storage system in the present invention;
图2为本发明中在存储系统中处理磁盘漫游的方法另一流程图；Fig. 2 is another flow chart of the method for processing disk roaming in the storage system in the present invention;
图3为本发明提供一种控制器的结构示意图；Fig. 3 is a schematic structural diagram of a controller provided by the present invention;
图4为图3所示实施例中控制器的另一结构示意图。FIG. 4 is another structural schematic diagram of the controller in the embodiment shown in FIG. 3 .
具体实施方式Detailed ways
下面结合附图对本发明提供的技术方案作进一步介绍。The technical solutions provided by the present invention will be further introduced below in conjunction with the accompanying drawings.
如图1所示，本发明提供一种在存储系统中处理磁盘漫游的方法，包括：As shown in Figure 1, the present invention provides a method for processing disk roaming in a storage system, including:
步骤101、当存储系统发生磁盘漫游时，将预先设置的未发生磁盘漫游时磁盘的盘符和/或槽位更新为该磁盘当前的盘符和/或槽位；
步骤102、根据更新后的盘符和/或槽位以及未发生磁盘漫游时的RAID信息，构建冗余磁盘阵列(RAID)信息。
本发明提供的方法，在存储系统发生磁盘漫游时，将未发生磁盘漫游时的盘符和/或槽位更新为该磁盘当前的盘符和/或槽位，再根据更新后的盘符和/或槽位以及未发生磁盘漫游时的RAID信息，构建冗余磁盘阵列(RAID)信息，保证未发生磁盘漫游时的RAID可用，采用可用的RAID信息构建存储系统新的RAID信息，实现方式简单且无需预先在磁盘占用存储空间存储备用的RAID信息，提高了磁盘的可用空间。In the method provided by the present invention, when disk roaming occurs in the storage system, the drive letter and/or slot when no disk roaming occurs is updated to the current drive letter and/or slot of the disk, and then according to the updated drive letter and /or slots and RAID information when disk roaming does not occur, construct redundant disk array (RAID) information to ensure that RAID is available when disk roaming does not occur, use available RAID information to construct new RAID information for the storage system, and the implementation method is simple And there is no need to store spare RAID information in the storage space occupied by the disk in advance, which improves the available space of the disk.
下面对本发明提供的技术方案作进一步说明，如图3所示：The technical scheme provided by the present invention is further described below, as shown in Figure 3:
步骤201、在存储系统运行正常时，控制器获取与本地连接的磁盘柜上每个磁盘的盘符与该磁盘所在槽位的标准映射关系，其中该标准映射关系是未发生磁盘漫游时该磁盘的盘符与槽位之间正确的映射关系。
具体的，获取该标准映射关系的过程可以通过如下方式实现，以Linux操作系统进行说明：Specifically, the process of obtaining the standard mapping relationship can be implemented in the following manner, which will be described with the Linux operating system:
步骤1、获取与本地连接的全部磁盘柜；Step 1. Obtain all disk cabinets connected to the local area;
具体的，向该磁盘柜发送expander sg查询指令，如sginfo-l。Specifically, send an expander sg query command, such as sginfo-l, to the disk cabinet.
Expander为扩展器，是磁盘柜与控制器之间的物理连接，根据连接使用的支持协议，会有相关适配卡，而通过适配卡从控制器接出去的扩展器在控制器上会有扩展号(即sg号)。在本发明里，磁盘柜在控制器上会显示一个sg号，通过查询该sg，会有该磁盘柜的详细信息。Expander is an expander, which is the physical connection between the disk cabinet and the controller. According to the support protocol used for the connection, there will be related adapter cards, and the expander connected from the controller through the adapter card will have a Extension number (i.e. sg number). In the present invention, the disk cabinet will display a sg number on the controller, and the detailed information of the disk cabinet will be obtained by querying the sg.
步骤2、获取每个expander sg上槽位的SAS(Serial Attached SCSI，串行SCSI)地址；Step 2. Obtain the SAS (Serial Attached SCSI, serial SCSI) address of the slot on each expander sg;
具体的，向该磁盘柜发送expander sg查询指令，如sg_ses-p 0xa/dev/sg*，其中‘*’指步骤1中的sg号。Specifically, send an expander sg query command to the disk cabinet, such as sg_ses-p 0xa/dev/sg*, where '*' refers to the sg number in step 1.
步骤3、根据存储系统中盘符，获取该磁盘柜槽位上磁盘的SAS地址和LU地址；Step 3. According to the drive letter in the storage system, obtain the SAS address and LU address of the disk on the slot of the disk cabinet;
具体的，发送磁盘信息查询指令，如sg_inq-p 0x83/dev/sd*，其中‘*’指该存储系统中的盘符。Specifically, send a disk information query command, such as sg_inq-p 0x83/dev/sd*, where '*' refers to the drive letter in the storage system.
其中步骤1～2与步骤3并无先后顺序。Steps 1-2 and Step 3 are not in sequence.
步骤4、建立具有相同SAS地址的槽位、磁盘的主键和磁盘的盘符之间的映射关系。Step 4, establishing a mapping relationship among slots with the same SAS address, the primary key of the disk, and the drive letter of the disk.
表1映射关系表Table 1 Mapping relationship table
步骤202、当用户进行磁盘插拔后，获取当前磁盘的盘符与该磁盘所在槽位的待校映射关系，其中获取方法可参见步骤201。
步骤203、判断待校映射关系与标准映射关系是否一致；
具体的，在第一映射关系和第二映射关系中，判断磁盘柜上每个SAS地址下LU信息、盘符信息和槽位信息是否相同，如果相同，确定待校映射关系与标准映射关系一致，确定未发生磁盘漫游，流程结束；否则，表示待校映射关系与标准映射关系不一致，确定发生磁盘漫游，其中包括3种情况，以下以表1中盘符c的映射关系为例进行说明：Specifically, in the first mapping relationship and the second mapping relationship, determine whether the LU information, drive letter information, and slot information under each SAS address on the disk cabinet are the same, and if they are the same, determine that the mapping relationship to be corrected is consistent with the standard mapping relationship, If it is determined that disk roaming has not occurred, the process ends; otherwise, it means that the mapping relationship to be checked is inconsistent with the standard mapping relationship, and it is determined that disk roaming occurs, including 3 situations. The following uses the mapping relationship of drive letter c in Table 1 as an example to illustrate:
情况一：磁盘插在正确的槽位上，但磁盘在存储系统上对应错误的盘符；Case 1: The disk is inserted into the correct slot, but the disk corresponds to the wrong drive letter on the storage system;
情况二：磁盘在存储系统上对应正确的盘符，但磁盘插在错误的槽位上；Case 2: The disk corresponds to the correct drive letter on the storage system, but the disk is inserted into the wrong slot;
情况三：磁盘插在错误的槽位上，且磁盘在存储系统上对应错误的盘符。Case 3: The disk is inserted into the wrong slot, and the disk corresponds to the wrong drive letter on the storage system.
在确定发生磁盘漫游后，执行步骤204；After it is determined that disk roaming occurs,
步骤204、对与待校映射关系不一致的标准映射关系进行更新。
以下以表1中盘符c的映射关系为例进行说明：The following uses the mapping relationship of drive letter c in Table 1 as an example for illustration:
情况一：磁盘插在正确的槽位上，但磁盘在存储系统上对应错误的盘符，例如磁盘对应的正确盘符是C盘，但发生磁盘漫游后，该磁盘对应的盘符为D盘，此情况可能是用户在存储系统处于开机状态下将磁盘取出后再次放回原槽位造成的；Case 1: The disk is inserted into the correct slot, but the disk corresponds to the wrong drive letter on the storage system. For example, the correct drive letter corresponding to the disk is C drive, but after disk roaming, the corresponding drive letter of the disk is D drive , this situation may be caused by the user taking out the disk and putting it back into the original slot when the storage system is powered on;
在c盘发生发生磁盘漫游后，如果系统用到C盘时，由于C盘已经不存在，会产生错误，系统通过遍历所有盘符对应的LU地址，如发送磁盘信息查询指令sg_inq-p 0x83/dev/sd*，其中‘*’指该存储系统中的所有盘符，得到具有原c盘LU地址的盘符，即盘符d，则删除该磁盘对应的原盘符c，更新该磁盘的盘符为d。After disk roaming occurs on disk c, if the system uses disk C, an error will occur because disk C no longer exists. The system traverses the LU addresses corresponding to all disk letters, such as sending the disk information query command sg_inq-p 0x83/ dev/sd*, where '*' refers to all the drive letters in the storage system. If you get the drive letter with the LU address of the original c drive, that is, the drive letter d, then delete the original drive letter c corresponding to the disk and update the drive letter of the disk. The drive letter is d.
情况二：磁盘在存储系统上对应正确的盘符，但磁盘插在错误的槽位上，此情况可能是用户在存储系统处于关机状态下将磁盘取出后放到其他槽位造成的。Situation 2: The disk corresponds to the correct drive letter on the storage system, but the disk is inserted into the wrong slot. This situation may be caused by the user taking out the disk and putting it in another slot when the storage system is powered off.
由于盘符是正确的，在该磁盘上构建的RAID不会出错，但是，在新建RAID时，会容易选到已经建立了RAID的磁盘，因此需要对标准映射表进行更新，具体包括：向该磁盘柜发送expander sg查询指令，如sg_ses-p 0xa/dev/sg*，其中‘*’指步骤201中步骤1中所指的sg号，得到磁盘柜(JBOD0)上全部槽位的SAS地址和LU地址，获取该LU地址当前对应的SAS地址，再根据得到的SAS地址得到该LU地址当前对应的槽位，本例中当前的槽位为02，则更新该LU地址对应的原槽位01为槽位02。Since the drive letter is correct, the RAID built on this disk will not go wrong. However, when creating a new RAID, it will be easy to select a disk that has already established a RAID, so the standard mapping table needs to be updated, specifically including: The disk cabinet sends an expander sg query command, such as sg_ses-p 0xa/dev/sg*, where '*' refers to the sg number indicated in step 1 in
当然也可以选择重建标准映射表，具体过程参见步骤201。Of course, you can also choose to rebuild the standard mapping table, see
情景三：磁盘插在错误的槽位上，且磁盘在存储系统上对应错误的盘符，此情况可能是用户在存储系统处于开机状态下将磁盘取出后放到其他槽位造成的。Scenario 3: The disk is inserted into the wrong slot, and the disk corresponds to the wrong drive letter on the storage system. This situation may be caused by the user removing the disk and putting it in another slot when the storage system is powered on.
该情形类似情形1，需要更新盘符，但是，该情形比情形1需要多做的工作就是遍历磁盘柜槽位信息，跟磁盘目前的SAS地址做比较，更新映射表中的磁盘槽位信息，如上表，原有盘符为c，系统发现c盘符无法使用了，需要更新，步骤如下：This situation is similar to situation 1, and the drive letter needs to be updated. However, this situation requires more work than situation 1. It is to traverse the slot information of the disk cabinet, compare it with the current SAS address of the disk, and update the disk slot information in the mapping table. As shown in the above table, the original drive letter is c. The system finds that the drive letter c is unusable and needs to be updated. The steps are as follows:
步骤1：发送磁盘信息查询指令，如sg_inq-p 0x83/dev/sd*，其中‘*’指该存储系统中的盘符。查询到d盘的LU与原盘符c的LU一致，则进行更新盘符d到映射表，并且将d的SAS地址项进行更新；Step 1: Send a disk information query command, such as sg_inq-p 0x83/dev/sd*, where '*' refers to the drive letter in the storage system. If the LU of drive d is found to be consistent with the LU of the original drive letter c, update the drive letter d to mapping table, and update the SAS address item of d;
步骤2：向该磁盘柜发送expander sg查询指令，如sg_ses-p 0xa/dev/sg*，其中‘*’指步骤201中步骤1中所指的sg号。获取的SAS地址，与d盘的SAS地址进行匹对，如果一致，则更新槽位信息至映射表中，例如该例子中当前为槽位02，原为槽位01。Step 2: Send an expander sg query command to the disk cabinet, such as sg_ses-p 0xa/dev/sg*, where '*' refers to the sg number indicated in step 1 in
步骤205、根据更新后的标准映射表构建RAID信息。
具体的，由于RAID信息是采用盘符信息建立的，例如RAID信息是使用盘符a、盘符b和盘符c进行构建的，如果没有漫游，根据盘符开机就能构建RAID。如果发生磁盘漫游，比如盘符c没了，从更新后的标准映射表得到，原来的盘符c更新为盘符d，则原盘符c对应磁盘中的RAID信息并没有瓦解，只需要将用于构建RAID信息的盘符c修改为盘符d即可。Specifically, since RAID information is established using drive letter information, for example, RAID information is constructed using drive letter a, drive letter b, and drive letter c, if there is no roaming, the RAID can be built according to the drive letter. If disk roaming occurs, for example, the drive letter c is missing, and the original drive letter c is updated to drive letter d from the updated standard mapping table, the RAID information on the disk corresponding to the original drive letter c has not collapsed. The drive letter c used to construct the RAID information can be changed to the drive letter d.
如果是新建RAID信息，在磁盘插错槽位发生磁盘漫游后，从更新后的标准映射关系中可以得到哪些磁盘为未构建RAID信息的磁盘，再新建RAID信息，从而避免现有技术中在发生磁盘漫游后对同一磁盘重复构建RAID信息。If new RAID information is created, after disk roaming occurs when the disk is inserted into the wrong slot, it can be obtained from the updated standard mapping relationship which disks are disks without RAID information, and then new RAID information is created, thereby avoiding the existing technology. After disk roaming, construct RAID information repeatedly for the same disk.
由此可以看出，当存储系统发生磁盘漫游时，磁盘保存的RAID信息并没有瓦解，而是通过修改盘符和/或槽位，采用原有的RAID信息进行构建，从而无需在磁盘中预先存储RAID信息造成存储空间浪费，采用本实施例的方法能够节省存储空间。It can be seen from this that when disk roaming occurs in the storage system, the RAID information stored on the disk is not disintegrated. Instead, the original RAID information is used to construct the disk by modifying the drive letter and/or slot. Storage of RAID information causes waste of storage space, and the method of this embodiment can save storage space.
需要说明的是，由于通常JBOD由两个冗余的控制器主控，而查到的槽位SAS地址可能在不同控制器上不能保证是完全一致的，通常为了保证磁盘的一致，在维护映射关系过程中，不但查询磁盘的SAS地址，还查询LU地址(logical unit)，该地址由厂家协议支持，是磁盘的唯一性标识。It should be noted that since the JBOD is usually controlled by two redundant controllers, the SAS addresses of the slots found may not be completely consistent on different controllers. Usually, in order to ensure the consistency of the disks, when maintaining the mapping During the relationship process, not only the SAS address of the disk is queried, but also the LU address (logical unit), which is supported by the manufacturer's agreement and is the unique identifier of the disk.
对应的，本发明提供一种采用上述方法的控制器，如图3所示，包括：Correspondingly, the present invention provides a controller using the above method, as shown in Figure 3, including:
更新模块301，用于当存储系统发生磁盘漫游时，将预先设置的未发生磁盘漫游时磁盘的盘符和/或槽位更新为该磁盘当前的盘符和/或槽位；An
构建模块302，用于根据更新后的盘符和/或槽位以及未发生磁盘漫游时的RAID信息，构建冗余磁盘阵列(RAID)信息。The
如图4所示，所述控制器还可以进一步包括：As shown in Figure 4, the controller may further include:
获取模块401，用于获取盘符和槽位的SAS地址以及盘符与磁盘的对应关系，并根据SAS地址对盘符和槽位进行匹配，得到盘符和槽位的对应关系，再根据盘符，对所述盘符和槽位的对应关系以及所述盘符与磁盘的对应关系，得到磁盘、盘符和槽位之间的映射关系。The obtaining
其中所述控制器通过主键(LU)标识磁盘。Wherein the controller identifies the disk through a primary key (LU).
所述构建模块302具体用于：采用更新后的盘符以及该更新盘符后磁盘对应的RAID信息构建RAID。The
本领域普通技术人员可以理解实现上述实施例的全部或部分步骤是可以通过程序来指令相关的硬件完成，所述的程序可以存储于一种计算机可读存储介质中，该程序在执行时，包括方法实施例的步骤之一或其组合。Those of ordinary skill in the art can understand that all or part of the steps for realizing the above embodiments can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable storage medium. When the program is executed, it includes One or a combination of the steps of the method embodiment.
另外，在本发明各个实施例中的各功能单元可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。所述集成的模块如果以软件功能模块的形式实现并作为独立的产品销售或使用时，也可以存储在一个计算机可读取存储介质中。In addition, each functional unit in each embodiment of the present invention may be implemented in the form of hardware, or may be implemented in the form of software functional modules. If the integrated modules are realized in the form of software function modules and sold or used as independent products, they can also be stored in a computer-readable storage medium.
上述提到的存储介质可以是只读存储器，磁盘或光盘等。The storage medium mentioned above may be a read-only memory, a magnetic disk or an optical disk, and the like.
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应以权利要求所述的保护范围为准。The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present invention. 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.
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| CN103189834A (en)* | 2012-07-16 | 2013-07-03 | 华为技术有限公司 | Method, apparatus and system for determining drive |
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