WO2010102568A1 - 一种控制存储设备状态的方法、装置及存储设备 - Google Patents

一种控制存储设备状态的方法、装置及存储设备 Download PDF

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Publication number
WO2010102568A1
WO2010102568A1 PCT/CN2010/070978 CN2010070978W WO2010102568A1 WO 2010102568 A1 WO2010102568 A1 WO 2010102568A1 CN 2010070978 W CN2010070978 W CN 2010070978W WO 2010102568 A1 WO2010102568 A1 WO 2010102568A1
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Prior art keywords
sleep
control information
storage device
state control
state
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PCT/CN2010/070978
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English (en)
French (fr)
Inventor
徐明军
杜宇旻
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成都市华为赛门铁克科技有限公司
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Publication of WO2010102568A1 publication Critical patent/WO2010102568A1/zh
Priority to US13/230,175 priority Critical patent/US20110320712A1/en

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
    • G06F3/0601—Interfaces specially adapted for storage systems
    • G06F3/0602—Interfaces specially adapted for storage systems specifically adapted to achieve a particular effect
    • G06F3/0625—Power saving in storage systems
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G06F1/32—Means for saving power
    • G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
    • G06F1/3206—Monitoring of events, devices or parameters that trigger a change in power modality
    • G06F1/3215—Monitoring of peripheral devices
    • G06F1/3221—Monitoring of peripheral devices of disk drive devices
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G06F1/32—Means for saving power
    • G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
    • G06F1/3234—Power saving characterised by the action undertaken
    • G06F1/325—Power saving in peripheral device
    • G06F1/3268—Power saving in hard disk drive
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
    • G06F3/0601—Interfaces specially adapted for storage systems
    • G06F3/0628—Interfaces specially adapted for storage systems making use of a particular technique
    • G06F3/0629—Configuration or reconfiguration of storage systems
    • G06F3/0634—Configuration or reconfiguration of storage systems by changing the state or mode of one or more devices
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
    • G06F3/0601—Interfaces specially adapted for storage systems
    • G06F3/0668—Interfaces specially adapted for storage systems adopting a particular infrastructure
    • G06F3/0671—In-line storage system
    • G06F3/0683—Plurality of storage devices
    • G06F3/0689—Disk arrays, e.g. RAID, JBOD
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/50—Reducing energy consumption in communication networks in wire-line communication networks, e.g. low power modes or reduced link rate

Definitions

  • the present invention relates to the field of electronic technologies, and in particular, to a method, an apparatus, and a storage device for controlling a state of a storage device.
  • MAID Massive Array of Idle Disks
  • Another type of time switch technology can effectively control the corresponding disk to enter a low power state.
  • This technology allows the disk to enter a working state within a certain period of time, and the other time is in a sleep state, and the disk can be read and written only during the specific time period mentioned above.
  • this method of limiting disk read and write time can cause inconvenience to the user.
  • the prior art sets a silent time as a basis for judging whether a disk enters a sleep state, that is, when the disk does not perform a read/write operation for more than a silent time threshold, the disk automatically enters a sleep state.
  • the inventors have found that at least the following problems exist in the prior art: After the disk automatically enters the sleep state, once the host connected to the disk needs to read and write data from the automatically sleeping disk, the disk needs to be re-opened. Re-opening the disk takes a certain amount of time, causing the read and write operations to be delayed, which is inconvenient for disk reading and writing.
  • An object of the embodiments of the present invention is to provide a method, a device, and a storage device for controlling the state of a storage device, so as to overcome the inconvenience caused by the storage device automatically entering a sleep state for reading and writing operations.
  • a method for controlling a state of a storage device including the following steps Step:
  • an apparatus for controlling a state of a storage device including: an information acquisition module, configured to acquire state control information of a logical disk in the storage device; and an information determination module, connected to the information acquisition module, And determining whether state control information of all logical disks in the storage device includes a sleep instruction;
  • the sleep control module is configured to obtain a determination result of the information determining module, and when the state control information of all the logical disks includes a sleep instruction, control the storage device to enter a sleep state.
  • a storage device including:
  • An array controller configured to obtain state control information of a logical disk in the disk array group, determine whether state control information of all logical disks in the disk array group includes a sleep instruction, and in all state control information of the logical disk Sending a sleep command to the disk array group when the sleep instruction is included;
  • the disk array group is configured to store data, and enters a sleep state when receiving the sleep command of the array controller.
  • the embodiment of the present invention has the following advantages: obtaining state control information of a logical disk in the storage device; determining whether state control information of all logical disks in the storage device includes a sleep instruction; When the state control information of the logical disk includes a sleep instruction, the storage device is controlled to enter a sleep state.
  • the storage device can be effectively controlled to enter a sleep state, which overcomes the inconvenience caused by the storage device automatically entering the sleep state to the read/write operation, and saves the power consumption of the storage device while being convenient to use.
  • FIG. 1 is a schematic flowchart diagram of a method for controlling a state of a storage device according to Embodiment 1 of the present invention
  • 2 is a schematic diagram of a disk array group in a large-scale inactive disk array according to Embodiment 2 of the present invention
  • FIG. 3 is a schematic flowchart of a method for controlling a state of a storage device according to Embodiment 2 of the present invention.
  • FIG. 4 is a schematic structural diagram of an apparatus for controlling a state of a storage device according to Embodiment 3 of the present invention
  • FIG. 5 is a schematic structural diagram of a storage device according to Embodiment 4 of the present invention.
  • FIG. 1 is a schematic flowchart of a method for controlling a state of a storage device according to Embodiment 1 of the present invention, where the method for controlling a state of a storage device includes:
  • S11 Obtain state control information of a logical disk in the storage device.
  • S12 Determine whether state control information of all logical disks in the storage device includes a sleep instruction.
  • the storage device in this embodiment has a sleep function, so as to control the storage device to enter a sleep state when the read/write operation is not performed, thereby effectively reducing power consumption.
  • the storage device may be a storage function such as a disk, a computer, or a server. device.
  • the storage device is composed of a plurality of logical disks, and the logical disks can receive state control information to control the sleep state of the storage devices.
  • This embodiment is obtained by And determining state control information of all logical disks in the storage device, and when the state control information of all logical disks includes a sleep instruction, the storage device is put into a sleep state.
  • a disk array can be divided into a plurality of different disk array groups, and each disk array group can enter a sleep state as needed, and the disk array groups do not affect each other's sleep state; That is to say, the disk array group is usually the smallest physical unit of sleep.
  • 2 is a schematic diagram of a Redundant Array of Spin Inexpensive Disks (RAID) in a large-scale inactive disk array according to Embodiment 2 of the present invention.
  • RAID Redundant Array of Spin Inexpensive Disks
  • the disk array set includes a plurality of disks, which are represented in Figure 2 by D1, D2, D3 DM, which are combined to form a disk array to provide more storage space than a single disk.
  • the disk array set typically also includes an array controller to control the plurality of disks.
  • each disk is divided into different blocks, and the blocks of different disks are combined to form a logical disk (LUN Disk, Logic Unit Number Disk); one disk array group will be divided into multiple Logical disks, which are represented in Figure 2 by L1, L2 LN.
  • LUN Disk Logic Unit Number Disk
  • the read and write operations on the disk array group are usually hosts, which can be implemented by devices such as servers and minicomputers.
  • the host usually uses a SCSI (Small Computer System Interface) protocol and is connected to the disk array group via a cable or fiber optic cable.
  • a disk array group can usually be associated with multiple hosts. All hosts perform read and write operations on logical disks in a disk array group instead of actual physical disks.
  • a disk array group serves multiple hosts, one host usually only reads and writes its corresponding logical disk. Other logical disks are usually for the host. Invisible. To ensure that the host can effectively control the hibernation and working state of the entire disk array group, the sleep or wake-up command issued by the host can be effectively applied to each logical disk of the disk array group.
  • FIG. 3 is a schematic flowchart of a method for controlling a state of a storage device according to Embodiment 2 of the present invention, where the method for controlling a state of a storage device includes:
  • the step may specifically include: the array controller of the disk array group may obtain state control information of the logical disks in the disk array group.
  • the status control information includes a sleep instruction or an end sleep instruction, which is used to notify the corresponding logical disk to enter a sleep state or end the sleep state to control the sleep state of the disk array group.
  • the state control information may be sent to the disk array group by a host connected to the disk array group to facilitate control of the sleep state of the disk array group by the host. Since the object of the host read and write operation is a logical disk in the disk array group, the state control information sent by the host is actually directed to the logical disk used by the host, so that all logical disks in the disk array group will receive their corresponding State control information for the host.
  • the status control information sent by a host includes a sleep instruction
  • the host allows its corresponding logical disk to enter a sleep state;
  • the status control information sent by a host includes an end sleep instruction, the host needs a corresponding logical disk.
  • the corresponding disk array group of the logical disk needs to end the sleep state.
  • S32 Determine whether state control information of all logical disks in the storage device includes a sleep instruction.
  • Determining whether the state control information of all the logical disks in the storage device includes the sleep instruction may specifically include: recording, in the instruction register, state control information of all logical disks in the storage device; reading the records recorded in the instruction register State control information of all logical disks; determining whether state control information of all logical disks includes a sleep instruction.
  • the status control information may include a sleep instruction or an end sleep instruction to control the storage device to enter a sleep state or end sleep. Status.
  • the instruction register may be included in the array controller of the disk array group, or may not be in the array controller, and the array controller receives the status of the logical disk in the disk array group sent by a host. After the control information, the state control information is saved in the instruction register.
  • the instruction register stores state control information sent to the corresponding logical disk by all hosts connected to the disk array group, so as to subsequently control the sleep state of the disk array group by reading the information.
  • Those skilled in the art will appreciate that other units having a memory function other than the instruction register can implement the same functions as the instruction register.
  • the state control information of all the logical disks in the storage device may not be saved through the register.
  • All the hosts connected to the storage device can report the status control information in real time.
  • the array controller obtains the status control information of all the hosts from the logical disk by counting the reports of all the hosts, thereby omitting the operation of saving the state control information.
  • the disk array group is taken as an example.
  • the status control information sent by a host includes a sleep instruction or an end sleep instruction
  • the host needs its corresponding logical disk to enter a sleep state or end a sleep state.
  • the disk array group is usually the smallest physical unit of sleep, it is necessary to determine the state control information provided by the host corresponding to all logical disks to control the sleep state of the entire disk array group.
  • the sleep command included in the state control information may further be provided with a sleep level for controlling the level of sleep of the storage device.
  • a sleep level for controlling the level of sleep of the storage device.
  • the storage device consumes different amounts of power and the time required to restart is different.
  • the disk array group can be divided into the following sleep levels according to the different power saving states of the disk array group:
  • Level 0 Normal operation status
  • Level 1 The head is out of the disc state
  • Level 2 Disk deceleration state
  • Level 3 Standby/Sleep/Power Down state.
  • the sleep level here is increased in order of 0, 1, 2, and 3.
  • level 0 is the lowest sleep level, indicating that the disk array group is in normal operation
  • level 3 is the highest sleep level.
  • the higher the sleep level the higher the sleep level of the disk array group and the more power consumption.
  • the host can send status control information according to its own needs, so that the disk array group enters its desired sleep level.
  • the unit that collects the state control information and controls the sleep state of the disk array group is an array controller, and those skilled in the art can understand that other control units or control units (such as controllers) outside the disk array group are used. , PC or server, etc.) can also control the sleep state of the disk array group.
  • the storage device entering the hibernation state may include: when the state control information of all the logical disks includes the sleep instruction, comparing the sleep levels included in all the sleep instructions to obtain the lowest sleep level; controlling the storage The device enters a sleep state with the minimum sleep and the like.
  • the disk array group As an example, after the array controller in the disk array group receives the state control information of all the logical disks, if all the hosts find that the sleep command is issued in the state control information sent by the host, all the hosts have been It is no longer necessary to read and write to its corresponding logical disk. That is, all logical disks of the disk array group can enter the sleep state, and the disk array group can be put to sleep.
  • the method may further include: S34: controlling the storage device to end the sleep state when the state control information of the all logical disks includes at least one end sleep instruction.
  • the state control information of one or more logical disks includes an end sleep instruction, indicating that one or more hosts need the disk array group to end the sleep state, and the array controller can control the disk array group to end hibernation and start working to meet the corresponding host. Work demands.
  • the state control information of all the logical disks of the storage device is obtained and determined, and when the sleep control command is included in the state control information of all the logical disks, the storage device is put into a sleep state.
  • the state control information is used to effectively control the state of the storage device, which overcomes the inconvenience caused by the storage device automatically entering the sleep state to the read/write operation, and saves the power consumption of the storage device while being convenient to use;
  • the state control information sent by all the hosts is saved in the instruction register, so that the sleep state of the storage device is controlled by reading the information; the embodiment can also compare all the sleep instructions included in the state control information of all the logical disks.
  • Obtaining a lowest sleep level of all the sleep instructions causing the storage device to enter a sleep state corresponding to the lowest sleep level to ensure the working requirements of all hosts; and the embodiment discloses that the storage device ends the sleep state.
  • the process when one or more hosts need the storage device to end hibernation, stops the storage device from sleeping to meet the needs of the corresponding host.
  • the storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).
  • FIG. 4 is a schematic structural diagram of an apparatus for controlling a state of a storage device according to Embodiment 3 of the present invention, where the apparatus includes:
  • the information obtaining module 41 is configured to obtain state control information of the logical disk in the storage device.
  • the information determining module 42 is connected to the information acquiring module 41, and is configured to determine whether state control information of all logical disks in the storage device includes Sleep instruction.
  • the sleep control module 43 is configured to obtain the determination result of the information determining module 42, and control the storage device to enter a sleep state when the state control information of all the logical disks includes a sleep instruction.
  • the embodiment controls the storage device to enter the sleep state according to the state control information of the logical disk in the storage device, and saves the power consumption of the storage device, and facilitates the host to control the storage by using the state control information.
  • the status of the device is not limited to the state control information of the logical disk in the storage device.
  • the dormancy control module 43 may further include: a dormancy level determining submodule, configured to obtain a judgment result of the information judging module 42, where state control information of all the logical disks is When the sleep instruction is included, the sleep level included in all the sleep instructions is compared to obtain the lowest sleep level;
  • the sleep level control sub-module is connected to the sleep level determination sub-module, configured to acquire the minimum sleep level, and control the storage device to enter a sleep state corresponding to the lowest sleep level.
  • the device can select the lowest sleep level from the sleep levels included in the state control information of all logical disks, so that the storage device enters a sleep state corresponding to the lowest sleep level, so as to ensure that the storage device can satisfy The need for all hosts to sleep on the storage device.
  • the information determining module 42 may include:
  • a storage submodule connected to the information obtaining module 41, for recording state control information of all logical disks in the storage device;
  • a reading submodule configured to read state control information of all the logical disks recorded in the storage submodule
  • the determining submodule is connected to the reading submodule, and is configured to determine whether the state control information of all the logical disks includes a sleep instruction.
  • the apparatus for controlling the state of the storage device may further include: a sleep termination module, configured to acquire a determination result of the information determination module 42, and include the state control information of all the logical disks. Controlling the storage device when at least one end of the sleep instruction End the sleep state.
  • the sleep end module can effectively control the storage device to end the sleep state, so that the storage device can meet the normal working requirements.
  • FIG. 5 is a schematic structural diagram of a storage device according to Embodiment 4 of the present invention.
  • the storage device may be connected to multiple hosts to receive state control information of the multiple hosts, where the storage device includes:
  • the array controller 51 is configured to obtain state control information of the logical disks in the disk array group 52, determine whether the state control information of all logical disks in the disk array group 52 includes a sleep command, and control the state of the logical disks. Sending a sleep command to the disk array group 52 when the information includes a sleep instruction;
  • the disk array group 52 is configured to store data, and enters a sleep state when receiving the sleep command of the array controller 51.
  • the array controller controls the sleep state of the disk array group by acquiring state control information provided by the host, and ensures that the storage device enters a sleep state according to the needs of the host, and meets the working requirements of the corresponding host. At the same time, power consumption is saved.
  • the array controller 51 may further include:
  • the storage device state control device 511 is configured to acquire state control information of the logical disks in the disk array group 52, store state control information of all logical disks in the disk array group 52 in the instruction register 512, and read the instruction register.
  • the state control information of all the logical disks recorded in 512 determines whether the state control information of all the logical disks includes a sleep instruction.
  • the instruction register 512 is configured to record state control information of all the logical disks.
  • the storage device state control device in the array controller can save the state control information acquired from the plurality of hosts into the instruction register, so as to facilitate statistics and management of the information, so that the array controller can control the disk more conveniently.
  • the array group goes to sleep.
  • the embodiment of the present invention provides a method, an apparatus, and a storage device for controlling a state of a storage device, by obtaining state control information of a logical disk in the storage device, and determining whether state control information of all logical disks in the storage device is Each includes a sleep instruction; when the state control information of all the logical disks includes a sleep instruction, the storage device is controlled to enter a sleep state. .
  • the state of the storage device can be effectively controlled, the inconvenience caused by the storage device automatically entering the sleep state for the read/write operation is overcome, and the power consumption of the storage device is saved while being conveniently used; and the embodiment can be in the instruction register.
  • the state control information provided by all the hosts is saved, so that the storage device is controlled by reading the information; the embodiment can also obtain all the sleeps by comparing all the sleep instructions included in the state control information of all the logical disks.
  • the lowest sleep level in the instruction causes the storage device to enter a sleep state with the lowest sleep, etc., to ensure the working requirements of all the hosts; and the embodiment discloses a process of ending the sleep of the storage device and related hardware.
  • the storage device When there is one or more hosts that need the storage device to end the hibernation, the storage device is stopped from being hibernated, so as to meet the working needs of the corresponding host.
  • the embodiment of the present invention further provides a storage device that receives the connection with the main host. State control information provided by the host You may need to enter a sleep state, while the work needed to satisfy the host power savings.

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Description

一种控制存储设备状态的方法、 装置及存储设备 技术领域
本发明涉及电子技术领域， 尤其涉及一种控制存储设备状态的方法、装置 及存储设备。
背景技术
随着信息技术的快速发展，存储设备的数据存储量正在迅速增长。 然而存 储设备中磁盘数量的增加会导致存储设备耗电量的增大， 特别是在很多时候， 一些磁盘阵列并没有进行读写操作却在消耗大量的电能， 造成了能源的浪费。 为了解决这一问题，一种大规模非活动磁盘阵列（MAID, Massive Array of Idle Disks ) ^明出来。 在 MAID技术中， 如果数据被写入磁盘后就很少被读取， 可以使大量写入数据又没有进行读写操作的磁盘进入低功耗甚至关电状态，从 而节约电能。 另外一种定时开关电技术可以有效控制相应磁盘进入低功耗状 态， 该技术使磁盘在特定时间段内进入工作状态， 其它时间处于休眠状态， 磁 盘只有在上述特定时间段内才能被读写，但这种限定磁盘读写时间的做法会给 使用者带来不便。
为解决上述问题，现有技术设置一静默时间作为判断磁盘是否进入休眠状 态的依据， 即当磁盘未进行读写操作的时间超过一静默时间门限时，磁盘将自 动进入休眠状态。 在实现本发明的过程中，发明人发现现有技术中至少存在如下问题： 磁盘 在自动进入休眠状态后，一旦与磁盘相连的主机需要从自动休眠的磁盘读写数 据， 磁盘需要重新开启， 而磁盘的重新开启会消耗一定时间， 造成读写操作被 延迟， 为磁盘读写带来不便。
发明内容
本发明实施例的目的在于提供一种控制存储设备状态的方法、装置及存储 设备， 以克服存储设备自动进入休眠状态给读写操作造成的不便。
根据本发明的一实施例，提供一种控制存储设备状态的方法， 包括如下步 骤：
获取存储设备中逻辑磁盘的状态控制信息；
判断所述存储设备中全部逻辑磁盘的状态控制信息是否均包含休眠指令； 当所述全部逻辑磁盘的状态控制信息均包含休眠指令时，控制所述存储设 备进入休眠状态。
根据本发明的又一实施例， 提供一种控制存储设备状态的装置， 包括： 信息获取模块， 用于获取存储设备中逻辑磁盘的状态控制信息； 信息判断模块， 与所述信息获取模块相连， 用于判断所述存储设备中全部 逻辑磁盘的状态控制信息是否均包含休眠指令；
休眠控制模块， 用于获取所述信息判断模块的判断结果，在所述全部逻辑 磁盘的状态控制信息均包含休眠指令时， 控制所述存储设备进入休眠状态。
根据本发明的又一实施例， 提供一种存储设备， 包括：
阵列控制器， 用于获取磁盘阵列组中逻辑磁盘的状态控制信息，判断所述 磁盘阵列组中全部逻辑磁盘的状态控制信息是否均包含休眠指令，在所述全部 逻辑磁盘的状态控制信息中均包含休眠指令时，向所述磁盘阵列组发送休眠命 令；
所述磁盘阵列组， 用于存储数据， 在收到所述阵列控制器的休眠命令时， 进入休眠状态。 根据对上述技术方案的描述， 本发明实施例有如下优点： 获取存储设备中 逻辑磁盘的状态控制信息；判断所述存储设备中全部逻辑磁盘的状态控制信息 是否均包含休眠指令； 当所述全部逻辑磁盘的状态控制信息均包含休眠指令 时，控制所述存储设备进入休眠状态。通过上述技术方案可以有效控制所述存 储设备进入休眠状态， 克服存储设备自动进入休眠状态给读写操作造成的不 便， 在方便使用的同时节省存储设备功耗。
附图说明
图 1 为本发明的实施例一提供的一种控制存储设备状态的方法的流程示 意图； 图 2 为本发明的实施例二提供的一种大规模非活动磁盘阵列中的磁盘阵 列组的示意图；
图 3 为本发明的实施例二提供的一种控制存储设备状态的方法的流程示 意图；
图 4 为本发明的实施例三提供的一种控制存储设备状态的装置的结构示 意图； 图 5为本发明的实施例四提供的一种存储设备的结构示意图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清 楚、 完整地描述， 显然， 所描述的实施例仅仅是本发明一部分实施例， 而不是 全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造 性劳动前提下所获得的所有其他实施例， 都属于本发明保护的范围。
需要注意的是， 以下实施例只是本发明的优选实施例，这些实施例只用于 描述本发明而不用于限定本发明。
实施例一
图 1 为本发明的实施例一提供的一种控制存储设备状态的方法的流程示 意图， 该控制存储设备状态的方法包括：
S11 : 获取存储设备中逻辑磁盘的状态控制信息；
S12: 判断所述存储设备中全部逻辑磁盘的状态控制信息是否均包含休眠 指令；
S13: 当所述全部逻辑磁盘的状态控制信息均包含休眠指令时， 控制所述 存储设备进入休眠状态。
本实施例中所述的存储设备带有休眠功能，以便控制存储设备在不进行读 写操作时进入休眠状态， 有效降低功耗， 所述存储设备可以是磁盘、 计算机、 服务器等具有存储功能的设备。 所述存储设备由多个逻辑磁盘组成， 所述逻辑 磁盘可接收状态控制信息， 以对存储设备休眠状态进行控制。本实施例通过获 取并判断所述存储设备中全部逻辑磁盘的状态控制信息，在全部逻辑磁盘的状 态控制信息均包含休眠指令时，使所述存储设备进入休眠状态。通过上述技术 方案可以对存储设备的状态进行有效控制，克服了存储设备自动进入休眠状态 给读写操作造成的不便， 在方便使用的同时节省存储设备功耗。
实施例二
本发明实施例为了方便描述控制存储设备进入休眠的过程，将以磁盘阵列 为例进行介绍。在存储设备的实际应用中， 一个磁盘阵列可以被划分为多个不 同的磁盘阵列组，每个磁盘阵列组可以根据需要进入休眠状态，磁盘阵列组之 间并不影响彼此的休眠状态； 也即是说，磁盘阵列组通常是休眠的最小物理单 位。图 2为本发明的实施例二提供的一种大规模非活动磁盘阵列中的磁盘阵列 组（ RAID， Redundant Array of Spin Inexpensive Disks )的示意图。 所述磁盘阵 列组中包括多个磁盘， 这些磁盘在图 2中将用 Dl、 D2、 D3 DM来表 示， 它们组合在一起形成磁盘阵列以提供比单一磁盘更大的存储空间。 所述磁 盘阵列组通常还包括阵列控制器， 以便对所述多个磁盘进行控制。在磁盘阵列 组中，每个磁盘都被划分为不同的块区， 不同磁盘的块区结合在一起形成一个 逻辑磁盘 ( LUN Disk, Logic Unit Number Disk ); 一个磁盘阵列组将被划分为 多个逻辑磁盘， 这些逻辑磁盘在图 2中将用 Ll、 L2 LN表示。 这样对 一个逻辑磁盘的操作在物理上就可以由多个磁盘分担，不但实现磁盘阵列组带 宽的提升， 也便于实现各磁盘间的冗余操作， 提高可靠性。 对所述磁盘阵列组 进行读写操作的通常是主机， 其可以由服务器、 小型机等设备实现。 所述主机 通常会采用 SCSI ( Small Computer System Interface, 小型计算机系统接口）协 议并通过电缆或光缆与磁盘阵列组相连。一个磁盘阵列组通常可以和多个主机 建立对应关系， 所有主机进行读写操作的对象是磁盘阵列组中的逻辑磁盘， 而 不是实际的物理磁盘。 当一个磁盘阵列组服务于多台主机时，一台主机通常只 对与其对应的逻辑磁盘进行读写操作，其它的逻辑磁盘对于该主机而言通常是 不可见的。要保证主机对整个磁盘阵列组的休眠和工作状态进行有效控制， 需 要使主机下发的休眠或唤醒指令能有效地作用在磁盘阵列组的每个逻辑磁盘 上。
图 3 为本发明的实施例二提供的一种控制存储设备状态的方法的流程示 意图， 该控制存储设备状态的方法包括：
S31 : 获取存储设备中逻辑磁盘的状态控制信息。
以磁盘阵列组为例，该步骤可具体包括： 所述磁盘阵列组的阵列控制器可 获取磁盘阵列组中逻辑磁盘的状态控制信息。所述状态控制信息中包含休眠指 令或结束休眠指令， 用来告知相应逻辑磁盘可以进入休眠状态或结束休眠状 态， 以对磁盘阵列组休眠状态进行控制。
所述状态控制信息可以由与所述磁盘阵列组相连接的主机发送给所述磁 盘阵列组， 以方便所述主机对所述磁盘阵列组的休眠状态进行控制。 由于所述 主机读写操作的对象是磁盘阵列组中的逻辑磁盘，该主机发送的状态控制信息 实际上针对的是其使用的逻辑磁盘，这样磁盘阵列组中的全部逻辑磁盘都会收 到其相应主机的状态控制信息。 当一主机发送的状态控制信息中包含休眠指 令，说明该主机允许其对应的逻辑磁盘进入休眠状态； 当一主机发送的状态控 制信息中包含结束休眠指令， 说明该主机需要对其对应的逻辑磁盘进行操作， 该逻辑磁盘相应磁盘阵列组需要结束休眠状态。
S32: 判断所述存储设备中全部逻辑磁盘的状态控制信息是否均包含休眠 指令。
判断所述存储设备中全部逻辑磁盘的状态控制信息是否均包含休眠指令 可以具体包括：在指令寄存器中记录所述存储设备中全部逻辑磁盘的状态控制 信息； 读取所述指令寄存器中记录的所述全部逻辑磁盘的状态控制信息； 判断 所述全部逻辑磁盘的状态控制信息是否均包含休眠指令。所述状态控制信息中 可以包括休眠指令或结束休眠指令，以控制存储设备进入休眠状态或结束休眠 状态。
在磁盘阵列组中， 所述指令寄存器可以包括在磁盘阵列组的阵列控制器 中，也可以不在阵列控制器中， 阵列控制器在接收到某台主机发送的该磁盘阵 列组中逻辑磁盘的状态控制信息后，在指令寄存器中保存该状态控制信息。 所 述指令寄存器保存着与该磁盘阵列组相连的全部主机的发送给相应逻辑磁盘 的状态控制信息， 以便后续通过读取这些信息对磁盘阵列组休眠状态进行控 制。本领域技术人员可以理解， 除指令寄存器之夕卜的其它具有存储功能的单元 也可实现与所述指令寄存器相同的功能。
本领域技术人员可以理解，判断所述存储设备中全部逻辑磁盘的状态控制 信息是否均包含休眠指令时，也可以不必通过寄存器保存全部逻辑磁盘的状态 控制信息。可以使与存储设备连接的全部主机实时上报其状态控制信息， 阵列 控制器通过统计全部主机的上报结果获得来自全部主机对于其逻辑磁盘的状 态控制信息， 从而省略保存状态控制信息的操作。
此处仍然以磁盘阵列组为例，当某主机发送的状态控制信息包含休眠指令 或结束休眠指令， 说明主机需要其对应的逻辑磁盘进入休眠或结束休眠状态。 但由于磁盘阵列组通常是休眠的最小物理单位，需要判断全部逻辑磁盘对应的 主机提供的状态控制信息， 以对整个磁盘阵列组的休眠状态进行控制。
所述状态控制信息包含的休眠指令中还可设有休眠等级，用于对存储设备 休眠的级别进行控制。 在不同的休眠等级下， 存储设备消耗的电能不同， 重新 启动所需要的时间也不同。在实际应用中，可根据磁盘阵列组的不同节能状态 可将磁盘阵列组划分为以下休眠等级：
0级（LevelO ) ： 正常运行状态；
1级（Levell ) ： 磁头脱离盘片状态；
2级（Level2 ) ： 磁盘降速状态；
3级（LeveB ) ： 备用 /休眠 /下电状态。 这里的休眠等级按照 0级、 1级、 2级、 3级依次递增。 其中， 0级为最低休 眠等级， 表明磁盘阵列组处于正常工作中； 3级则为最高休眠等级。 休眠等级 越高， 表明磁盘阵列组的休眠程度越高， 节省功耗也更多。 主机可以根据自身 的不同需要发送状态控制信息， 使磁盘阵列组进入其所希望的休眠等级。
上述过程中，收集状态控制信息并对磁盘阵列组休眠状态进行控制的单元 是一阵列控制器，本领域技术人员可以理解， 采用其它控制单元或位于磁盘阵 列组之外的控制单元（如控制器、 PC机或服务器等）也可以实现对磁盘阵列 组休眠状态的控制。
S33: 当所述全部逻辑磁盘的状态控制信息均包含休眠指令时， 控制所述 存储设备进入休眠状态。
在该步骤中， 所述存储设备进入休眠状态可包括： 当所述全部逻辑磁盘的 状态控制信息均包含休眠指令时， 比较所有休眠指令中包括的休眠等级，得到 最低休眠等级； 控制所述存储设备进入与所述最低休眠等 «目应的休眠状态。
以磁盘阵列组为例，当磁盘阵列组中的阵列控制器接收到全部逻辑磁盘的 状态控制信息后，如发现全部主机都在其发送的状态控制信息中下达了休眠指 令，说明所有主机都已不再需要对其对应的逻辑磁盘进行读写， 即磁盘阵列组 的全部逻辑磁盘都可以进入休眠状态， 则可以对磁盘阵列组进行休眠操作。
由于不同主机对其逻辑磁盘存在不同需要，可能需要其逻辑磁盘进入不同 等级的休眠。这时需要比较所有主机允许其逻辑磁盘进入休眠的等级，得到其 中最低休眠等级， 并让磁盘阵列组进入最低休眠等^目应的休眠状态，从而满 足下达了最低休眠等级命令的主机的工作需要，避免因磁盘阵列组休眠程度太 深而无法满足某些主机的需求。
该方法还可以进一步包括 S34: 当所述全部逻辑磁盘的状态控制信息中包 含至少一个结束休眠指令时， 控制所述存储设备结束休眠状态。
以磁盘阵列组为例，在该步骤中， 阵列控制器如果发现其指令寄存器中的 一个或多个逻辑磁盘的状态控制信息包含结束休眠指令，说明存在一个或多个 主机需要磁盘阵列组结束休眠状态，则阵列控制器可控制磁盘阵列组结束休眠 并开始工作， 以满足相应主机的工作需求。
本实施例获取并判断所述存储设备的全部逻辑磁盘的状态控制信息，在全 部逻辑磁盘的状态控制信息中均包含休眠指令时，使所述存储设备进入休眠状 态。本实施例利用所述状态控制信息对存储设备的状态进行有效控制，克服了 存储设备自动进入休眠状态给读写操作造成的不便，在方便使用的同时节省存 储设备功耗；同时本实施例可以在指令寄存器中保存全部主机发送的状态控制 信息， 以便后续通过读取这些信息对存储设备休眠状态进行控制； 本实施例还 可通过比较所述全部逻辑磁盘的状态控制信息中包含的所有休眠指令，得到所 述所有休眠指令中的最低休眠等级，使所述存储设备进入与所述最低休眠等级 相应的休眠状态， 以保证所有主机的工作需求； 同时本实施例公开了使存储设 备结束休眠的过程， 当存在一个或多个主机需要存储设备结束休眠时，使存储 设备停止休眠， 以便满足相应主机的需要。
本领域普通技术人员可以理解上述方法实施例中的全部或部分流程，是可 以通过计算机程序来指令相关硬件完成的，所述的程序可存储于一计算机可读 取存储介质中。 其中所述的存储介质可为磁碟、 光盘、 只读存储记忆体 ( Read-Only Memory, ROM )或随才 /^ 储记忆体 ( Random Access Memory, RAM )等。
实施例三
图 4 为本发明的实施例三提供的一种控制存储设备状态的装置的结构示 意图， 该装置包括：
信息获取模块 41， 用于获取存储设备中逻辑磁盘的状态控制信息； 信息判断模块 42， 与所述信息获取模块 41相连， 用于判断所述存储设备 中全部逻辑磁盘的状态控制信息是否均包含休眠指令； 休眠控制模块 43， 用于获取所述信息判断模块 42的判断结果， 在所述全 部逻辑磁盘的状态控制信息均包含休眠指令时，控制所述存储设备进入休眠状 态。
本实施例通过提供一种控制存储设备状态的装置，根据存储设备中逻辑磁 盘的状态控制信息控制存储设备进入休眠状态， 在节省存储设备功耗的同时， 方便主机通过所述状态控制信息控制存储设备的状态。
进一步地， 在上述装置实施例中， 所述休眠控制模块 43还可以包括： 休眠等级判断子模块， 用于获取所述信息判断模块 42的判断结果， 在所 述全部逻辑磁盘的状态控制信息均包含休眠指令时，比较所有休眠指令中包括 的休眠等级， 得到最低休眠等级；
休眠等级控制子模块， 与所述休眠等级判断子模块相连， 用于获取所述最 低休眠等级， 控制所述存储设备进入与所述最低休眠等级相应的休眠状态。
通过上述子模块的功能，该装置能从全部逻辑磁盘的状态控制信息包含的 休眠等级中选出最低休眠等级，使存储设备进入与所述最低休眠等级相应的休 眠状态， 以保证存储设备能满足所有主机对存储设备休眠状态的需求。
再进一步地， 所述信息判断模块 42可包括：
存储子模块， 与信息获取模块 41相连， 用于记录所述存储设备中全部逻 辑磁盘的状态控制信息；
读取子模块，用于读取所述存储子模块中记录的所述全部逻辑磁盘的状态 控制信息；
判断子模块， 与读取子模块相连， 用于判断所述全部逻辑磁盘的状态控制 信息是否均包含休眠指令。
更进一步地， 上述实施例三提供的控制存储设备状态的装置中还可包括： 休眠结束模块， 用于获取所述信息判断模块 42的判断结果， 在所述全部 逻辑磁盘的状态控制信息中包含至少一个结束休眠指令时，控制所述存储设备 结束休眠状态。
通过休眠结束模块可有效控制所述存储设备结束休眠状态，使存储设备能 满足正常工作需求。
实施例四
图 5为本发明的实施例四提供的一种存储设备的结构示意图，所述存储设 备可以与多个主机相连接，接收所述多个主机的状态控制信息，该存储设备包 括：
阵列控制器 51， 用于获取磁盘阵列组 52中逻辑磁盘的状态控制信息， 判 断所述磁盘阵列组 52中全部逻辑磁盘的状态控制信息是否均包含休眠指令， 在所述全部逻辑磁盘的状态控制信息中均包含休眠指令时，向所述磁盘阵列组 52发送休眠命令；
所述磁盘阵列组 52， 用于存储数据， 在收到所述阵列控制器 51的休眠命 令时， 进入休眠状态。
在此实施例提供的存储设备中，阵列控制器通过获取主机提供的状态控制 信息对磁盘阵列组的休眠状态进行控制，保证存储设备根据所述主机的需要进 入休眠状态， 满足相应主机工作需求的同时， 节省了功耗。
进一步的， 所述阵列控制器 51还可包括：
存储设备状态控制装置 511， 用于获取磁盘阵列组 52中逻辑磁盘的状态 控制信息， 将所述磁盘阵列组 52中全部逻辑磁盘的状态控制信息存入指令寄 存器 512， 并读取所述指令寄存器 512中记录的所述全部逻辑磁盘的状态控制 信息， 判断所述全部逻辑磁盘的状态控制信息是否均包含休眠指令，
在所述全部逻辑磁盘的状态控制信息中均包含休眠指令时，向所述磁盘阵 列组 52发送休眠命令，
在所述全部逻辑磁盘的状态控制信息中包含至少一个结束休眠指令时，向 所述磁盘阵列组 52发送结束休眠命令； 所述指令寄存器 512， 用于记录所述全部逻辑磁盘的状态控制信息。
阵列控制器中的存储设备状态控制装置可通过将所述从多个主机处获取 的状态控制信息保存入指令寄存器， 以方便对这些信息进行统计和管理，使阵 列控制器能够更加方便的控制磁盘阵列组进入休眠状态。
本领域技术人员可以理解，上述装置实施例中的模块既可以是硬件也可以 是软件； 既可以是互相独立的模块，也可以互相拆分或合并以实现与各模块相 同的功能。 综上所述，本发明实施例提供一种控制存储设备状态的方法、装置及存储 设备，通过获取存储设备中逻辑磁盘的状态控制信息； 判断所述存储设备中全 部逻辑磁盘的状态控制信息是否均包含休眠指令；当所述全部逻辑磁盘的状态 控制信息均包含休眠指令时， 控制所述存储设备进入休眠状态。。 通过上述技 术方案可以对存储设备的状态进行有效控制，克服了存储设备自动进入休眠状 态给读写操作造成的不便，在方便使用的同时节省存储设备功耗； 同时本实施 例可以在指令寄存器中保存全部主机提供的状态控制信息，以便后续通过读取 这些信息对存储设备进行控制；本实施例还可通过比较所述全部逻辑磁盘的状 态控制信息中包含的所有休眠指令， 得到所述所有休眠指令中的最低休眠等 级，使所述存储设备进入与所述最低休眠等 «目应的休眠状态， 以保证所有主 机的工作需求； 同时本实施例公开了使存储设备结束休眠的过程和相关硬件， 当存在一个或多个主机需要存储设备结束休眠时，使存储设备停止休眠， 以便 满足相应主机的工作需要； 本发明实施例还提供了一种存储设备，其通过与主 才 目连， 接收主机提供的状态控制信息， 可根据需要进入休眠状态， 在满足主 机工作需要的同时节省了功耗。

Claims

权 利 要 求
1、 一种控制存储设备状态的方法， 其特征在于， 包括如下步骤： 获取存储设备中逻辑磁盘的状态控制信息；
判断所述存储设备中全部逻辑磁盘的状态控制信息是否均包含休眠指令； 当所述全部逻辑磁盘的状态控制信息均包含休眠指令时，控制所述存储设 备进入休眠状态。
2、 如权利要求 1所述的方法， 其特征在于， 所述逻辑磁盘的状态控制信 息通过与所述存储设备相连接的主机发送给所述存储设备，所述状态控制信息 包括休眠指令或结束休眠指令。
3、 如权利要求 1所述的方法， 其特征在于， 所述判断所述存储设备中全 部逻辑磁盘的状态控制信息是否均包含休眠指令之前还包括：
在指令寄存器中记录所述存储设备中全部逻辑磁盘的状态控制信息； 读取所述指令寄存器中记录的所述全部逻辑磁盘的状态控制信息。
4、 如权利要求 1所述的方法， 其特征在于， 所述控制所述存储设备进入 休眠状态包括：
比较所有休眠指令中包括的休眠等级， 得到最低休眠等级；
控制所述存储设备进入与所述最低休眠等 «目应的休眠状态。
5、 如权利要求 1至 4中任一项所述的方法， 其特征在于， 还包括： 当所述全部逻辑磁盘的状态控制信息中包含至少一个结束休眠指令时，控 制所述存储设备结束休眠状态。
6、 一种控制存储设备状态的装置， 其特征在于， 包括：
信息获取模块， 用于获取存储设备中逻辑磁盘的状态控制信息； 信息判断模块， 与所述信息获取模块相连， 用于判断所述存储设备中全部 逻辑磁盘的状态控制信息是否均包含休眠指令；
休眠控制模块， 用于获取所述信息判断模块的判断结果，在所述全部逻辑 磁盘的状态控制信息均包含休眠指令时， 控制所述存储设备进入休眠状态。
7、 如权利要求 6所述的装置， 其特征在于， 所述休眠控制模块包括： 休眠等级判断子模块， 用于获取所述信息判断模块的判断结果，在所述全 部逻辑磁盘的状态控制信息均包含休眠指令时，比较所有休眠指令中包括的休 眠等级， 得到最低休眠等级；
休眠等级控制子模块， 与所述休眠等级判断子模块相连， 用于获取所述最 低休眠等级， 控制所述存储设备进入与所述最低休眠等级相应的休眠状态。
8、 如权利要求 6所述的装置， 其特征在于， 所述信息判断模块包括： 存储子模块， 与信息获取模块相连， 用于记录所述存储设备中全部逻辑磁 盘的状态控制信息；
读取子模块，用于读取所述存储子模块中记录的所述全部逻辑磁盘的状态 控制信息；
判断子模块， 与读取子模块相连， 用于判断所述全部逻辑磁盘的状态控制 信息是否均包含休眠指令。
9、 如权利要求 6或 7或 8所述的装置， 其特征在于， 还包括：
休眠结束模块， 用于获取所述信息判断模块的判断结果，在所述全部逻辑 磁盘的状态控制信息中包含至少一个结束休眠指令时，控制所述存储设备结束 休眠状态。
10、 一种存储设备， 其特征在于， 包括：
阵列控制器， 用于获取磁盘阵列组中逻辑磁盘的状态控制信息，判断所述 磁盘阵列组中全部逻辑磁盘的状态控制信息是否均包含休眠指令，在所述全部 逻辑磁盘的状态控制信息中均包含休眠指令时，向所述磁盘阵列组发送休眠命 令；
所述磁盘阵列组， 用于存储数据， 在收到所述阵列控制器的休眠命令时， 进入休眠状态。
11、 如权利要求 10所述的存储设备， 其特征在于， 所述阵列控制器包括： 存储设备状态控制装置， 用于获取磁盘阵列组中逻辑磁盘的状态控制信 息，将所述磁盘阵列组中全部逻辑磁盘的状态控制信息存入指令寄存器， 并读 取所述指令寄存器中记录的所述全部逻辑磁盘的状态控制信息，判断所述全部 逻辑磁盘的状态控制信息是否均包含休眠指令，
在所述全部逻辑磁盘的状态控制信息中均包含休眠指令时，向所述磁盘阵 列组发送休眠命令，
在所述全部逻辑磁盘的状态控制信息中包含至少一个结束休眠指令时，向 所述磁盘阵列组发送结束休眠命令；
所述指令寄存器， 用于记录所述全部逻辑磁盘的状态控制信息。
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