WO2022044434A1 - Dispositif, procédé et programme de traitement d'informations - Google Patents

Dispositif, procédé et programme de traitement d'informations Download PDF

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Publication number
WO2022044434A1
WO2022044434A1 PCT/JP2021/017589 JP2021017589W WO2022044434A1 WO 2022044434 A1 WO2022044434 A1 WO 2022044434A1 JP 2021017589 W JP2021017589 W JP 2021017589W WO 2022044434 A1 WO2022044434 A1 WO 2022044434A1
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WO
WIPO (PCT)
Prior art keywords
information processing
tape
objects
recording
control
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Application number
PCT/JP2021/017589
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English (en)
Japanese (ja)
Inventor
豊 大石
輝江 渡邊
理貴 近藤
優子 宇野
Original Assignee
富士フイルム株式会社
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Application filed by 富士フイルム株式会社 filed Critical 富士フイルム株式会社
Priority to JP2022545308A priority Critical patent/JPWO2022044434A1/ja
Publication of WO2022044434A1 publication Critical patent/WO2022044434A1/fr

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    • 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

Definitions

  • This disclosure relates to an information processing device, an information processing method, and an information processing program.
  • the present disclosure has been made in view of the above circumstances, and an object of the present disclosure is to provide an information processing device, an information processing method, and an information processing program capable of shortening the time from the start of recording of an object to the completion of recording. And.
  • the information processing apparatus of the present disclosure is an information processing apparatus including at least one processor, and the processor is a storage in which the number of tape drives that can be used for recording an object on a magnetic tape is composed of a plurality of magnetic tapes. If more than the number of pools, record objects in parallel in each of multiple storage pools, depending on the index value that correlates with the ratio of the time it takes to record the object to the time it takes to replace the tape to the tape drive. First control is performed, or second control is performed for each storage pool in order to record objects in parallel on a plurality of magnetic tapes constituting the storage pool.
  • the index value may be the ratio of the total size of the objects to be recorded and the number of objects to be recorded.
  • the information processing method of the present disclosure takes time to record an object when the number of tape drives available for recording the object on the magnetic tape is larger than the number of storage pools composed of a plurality of magnetic tapes.
  • the processor included in the information processing apparatus executes a second control process for recording objects in parallel on a plurality of magnetic tapes constituting the storage pool.
  • the information processing program of the present disclosure takes time to record an object when the number of tape drives available for recording the object on the magnetic tape is larger than the number of storage pools composed of a plurality of magnetic tapes.
  • the first control to record objects in parallel in each of multiple storage pools, or in order for each storage pool, depending on the index value that correlates with the ratio of the time it takes to replace the magnetic tape to the tape drive.
  • the purpose is to cause a processor included in the information processing apparatus to perform a second control process for recording objects in parallel on a plurality of magnetic tapes constituting the storage pool.
  • the recording / playback system 10 includes an information processing device 12 and a tape library 14.
  • the information processing apparatus 12 include a server computer and the like.
  • the information processing apparatus 12 is communicably connected to the user terminal 11 via a network.
  • the user terminal 11 include a personal computer and the like.
  • the tape library 14 includes a plurality of slots (not shown) and a plurality of tape drives 18, and each slot stores a magnetic tape T as an example of a recording medium.
  • Each tape drive 18 is connected to the information processing device 12.
  • the tape drive 18 writes or reads data on the magnetic tape T under the control of the information processing apparatus 12.
  • An example of the magnetic tape T is an LTO (Linear Tape-Open) tape.
  • the magnetic tape T to be written or read is loaded from the slot into a predetermined tape drive 18.
  • the magnetic tape T is unloaded from the tape drive 18 into the slot originally stored.
  • the metadata is expressed as “meta”.
  • the storage system that handles this object is called an object storage system.
  • the metadata includes, for example, object identification information such as an object key, object name, data size, and attribute information such as a time stamp.
  • the configuration of the magnetic tape T according to the present embodiment will be described with reference to FIG.
  • the magnetic tape T is divided into two partitions, a reference partition RP on which metadata is recorded and a data partition DP on which objects are recorded.
  • the object when the object is recorded in the data partition DP, it is recorded in the order of metadata and data.
  • the recording order of the data and the metadata when the object is recorded on the magnetic tape T is not particularly limited, and may be the order of the data and the metadata.
  • the reference partition RP and the data partition DP are separated by a guard wraps GW including a plurality of wraps.
  • the information processing apparatus 12 when the object group is recorded on the magnetic tape T, the information processing apparatus 12 first controls to record the object group on the data partition DP. After that, at a predetermined timing, control is performed to record each metadata included in the object group recorded in the data partition DP in the reference partition RP. Examples of this timing include the timing of unloading the magnetic tape T from the tape drive 18.
  • the information processing apparatus 12 includes a CPU (Central Processing Unit) 20, a memory 21 as a temporary storage area, and a non-volatile storage unit 22. Further, the information processing apparatus 12 includes a display unit 23 such as a liquid crystal display, an input unit 24 such as a keyboard and a mouse, a network I / F (InterFace) 25 connected to a network, and an external I to which each tape drive 18 is connected. / F26 is included.
  • the CPU 20, the memory 21, the storage unit 22, the display unit 23, the input unit 24, the network I / F25, and the external I / F26 are connected to the bus 27.
  • the storage unit 22 is realized by an HDD (Hard Disk Drive), an SSD (Solid State Drive), a flash memory, or the like.
  • the information processing program 30 is stored in the storage unit 22 as a storage medium.
  • the CPU 20 reads the information processing program 30 from the storage unit 22, expands it into the memory 21, and executes the expanded information processing program 30. Further, the storage unit 22 stores an object to be recorded on the magnetic tape T.
  • a storage pool composed of a plurality of magnetic tapes T As shown in FIG. 5, one storage pool contains a plurality of magnetic tapes T. Also, a pool group is composed of one or more storage pools. In the present embodiment, a case where three magnetic tapes T are included in one storage pool and one storage pool is included in one pool group will be described.
  • a pool group is assigned to the logical volume of the information processing apparatus 12, and the logical volume is provided to the user of the recording / playback system 10. Therefore, when the user terminal 11 transmits the data to be recorded to the information processing device 12, the information processing device 12 controls to record the data in the storage pool included in the pool group corresponding to the logical volume of the recording destination. ..
  • the first control is a control for recording objects in parallel in each of a plurality of storage pools (hereinafter referred to as “first control”).
  • first control two tape drives 18 are used to record two objects in each of the two storage pools.
  • the second control is a control for recording objects in parallel on a plurality of magnetic tapes T constituting the storage pool in order for each storage pool (hereinafter, "second control"). It is called “control”).
  • second control a control for recording objects in parallel on a plurality of magnetic tapes T constituting the storage pool in order for each storage pool.
  • control it is called “control”).
  • two tape drives 18 are used to record two object groups on two magnetic tapes T constituting a storage pool in the order of Pool1 and Pool2.
  • the total size of the objects to be recorded may be a size that fits in one magnetic tape T.
  • the replacement of the magnetic tape T with the tape drive 18 does not occur.
  • the magnetic tape T is replaced with the tape drive 18.
  • the replacement of the magnetic tape T with the tape drive 18 is simply referred to as "replacement of the magnetic tape T".
  • the time required for the replacement of the magnetic tape T is shown by a broken line rectangle.
  • the number of tape drives 18 that can be used for recording objects on the magnetic tape T (hereinafter referred to as “the number of available drives”) is equal to the number of storage pools, the timing at which recording of all objects to be recorded is completed. t is slower in the second control than in the first control by the amount of time required for the replacement of the magnetic tape T. However, when the number of available drives is larger than the number of storage pools, the timing t of the first control is not always earlier than that of the second control.
  • the information processing apparatus 12 has a function of properly using the first control and the second control when the number of usable drives is larger than the number of storage pools.
  • the information processing apparatus 12 includes a derivation unit 40 and a control unit 42.
  • the CPU 20 executes the information processing program 30, it functions as a derivation unit 40 and a control unit 42.
  • the derivation unit 40 derives an index value V that correlates with the ratio between the time required for recording the object and the time required for replacing the magnetic tape T.
  • the details of the index value V will be described.
  • the time required to record an object depends on the total size of the objects to be recorded, and the larger the total value, the longer the recording time.
  • the following commitments are made during the time required for the replacement of the magnetic tape T. Processing time is included.
  • the commit process referred to here means a process of recording each metadata included in the object group recorded in the data partition DP in the reference partition RP.
  • the size of the data contained in the object varies depending on the data, but the size of the metadata does not depend on the data, and the fluctuation is very small compared to the size of the data.
  • the time required for the commit process depends on the number of objects to be recorded, and the larger the number of objects to be recorded, the longer it becomes. That is, when the total size of the objects to be recorded is the same, the time required to record the objects is almost the same, but the time required to replace the magnetic tape T varies depending on the number of objects to be recorded.
  • the ratio of the total size of the objects to be recorded and the number of objects to be recorded is applied as the index value V. Specifically, as the index value V, a value obtained by dividing the total size of the objects to be recorded by the number of objects to be recorded is applied.
  • control unit 42 When the number of usable drives is larger than the number of storage pools, the control unit 42 performs the first control or the second control according to the index value V derived by the out-licensing unit 40.
  • FIGS. 8 and 9 illustrate the case where the number of usable drives is 3 and the number of storage pools is 2.
  • a large index value V means that the total size of the objects is relatively larger than the number of objects. That is, the larger the index value V, the larger the ratio of the time required for recording the object to the time required for replacing the magnetic tape T.
  • the timing t at which the recording of all the objects to be recorded is completed is earlier in the second control than in the first control.
  • the timing t at which the recording of all the objects to be recorded is completed is earlier in the first control than in the second control.
  • the control unit 42 performs the second control. Further, when the index value V is less than the threshold value TH, the control unit 42 performs the first control.
  • the threshold value TH for example, a value at which the timing t when the first control is performed and the timing t when the second control is performed can be applied.
  • the operation of the information processing apparatus 12 according to the present embodiment will be described with reference to FIG.
  • the CPU 20 executes the information processing program 30
  • the object recording process shown in FIG. 10 is executed.
  • the object recording process shown in FIG. 10 is executed, for example, when the information processing apparatus 12 receives the execution start instruction transmitted from the user terminal 11 and the number of usable drives is larger than the number of storage pools.
  • step S10 of FIG. 10 the derivation unit 40 derives the index value V by dividing the total size of the objects to be recorded by the number of objects to be recorded.
  • step S12 the control unit 42 determines whether or not the index value V is equal to or greater than the threshold value TH. If this determination is affirmative, the process proceeds to step S14. In step S14, the control unit 42 performs the second control. When the process of step S14 is completed, the object recording process is completed.
  • step S12 determines whether the determination in step S12 is a negative determination. If the determination in step S12 is a negative determination, the process proceeds to step S16.
  • step S16 the control unit 42 performs the first control. When the process of step S16 is completed, the object recording process is completed.
  • the various processors are used as the hardware structure of the processing unit that executes various processes such as the derivation unit 40 and the control unit 42.
  • the various processors include a CPU, which is a general-purpose processor that executes software (programs) and functions as various processing units, as well as circuits after manufacturing FPGAs (Field Programmable Gate Arrays) and the like.
  • Dedicated electricity which is a processor with a circuit configuration specially designed to execute specific processing such as programmable logic device (PLD), ASIC (Application Specific Integrated Circuit), which is a processor whose configuration can be changed. Circuits etc. are included.
  • One processing unit may be composed of one of these various processors, or a combination of two or more processors of the same type or different types (for example, a combination of a plurality of FPGAs or a combination of a CPU and an FPGA). It may be composed of a combination). Further, a plurality of processing units may be configured by one processor.
  • one processor is configured by a combination of one or more CPUs and software, as represented by a computer such as a client and a server.
  • the processor functions as a plurality of processing units.
  • SoC System on Chip
  • the various processing units are configured by using one or more of the above-mentioned various processors as a hardware-like structure.
  • an electric circuit in which circuit elements such as semiconductor elements are combined can be used.
  • the information processing program 30 is provided in a form recorded on a recording medium such as a CD-ROM (Compact Disc Read Only Memory), a DVD-ROM (Digital Versatile Disc Read Only Memory), and a USB (Universal Serial Bus) memory. May be good. Further, the information processing program 30 may be downloaded from an external device via a network.
  • a recording medium such as a CD-ROM (Compact Disc Read Only Memory), a DVD-ROM (Digital Versatile Disc Read Only Memory), and a USB (Universal Serial Bus) memory. May be good.
  • the information processing program 30 may be downloaded from an external device via a network.

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)

Abstract

Lorsque le nombre de lecteurs de bande disponibles pour enregistrer des objets sur une bande magnétique est supérieur au nombre de groupes de stockage qui contiennent une pluralité de bandes magnétiques, le dispositif de traitement d'informations d'après la présente invention exécute, en fonction d'une valeur d'indicateur corrélant le rapport entre le temps nécessaire pour enregistrer un objet et le temps nécessaire pour remplacer la bande magnétique dans un lecteur de bande, une première commande dans laquelle des objets sont enregistrés en parallèle sur chaque groupe de la pluralité de groupes de stockage ou une seconde commande dans laquelle, pour chaque groupe de stockage successivement, des objets sont enregistrés en parallèle sur la pluralité de bandes magnétiques constituant le groupe de stockage.
PCT/JP2021/017589 2020-08-27 2021-05-07 Dispositif, procédé et programme de traitement d'informations WO2022044434A1 (fr)

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JP2022545308A JPWO2022044434A1 (fr) 2020-08-27 2021-05-07

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JP2020-143749 2020-08-27
JP2020143749 2020-08-27

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WO2022044434A1 true WO2022044434A1 (fr) 2022-03-03

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006172400A (ja) * 2004-12-20 2006-06-29 Fujitsu Ltd データ管理方法及び装置並びに階層型記憶装置
US20120127606A1 (en) * 2004-09-27 2012-05-24 Spectra Logic Corporation Self-describing a predefined pool of tape cartridges
JP2016095766A (ja) * 2014-11-17 2016-05-26 インターナショナル・ビジネス・マシーンズ・コーポレーションＩｎｔｅｒｎａｔｉｏｎａｌ Ｂｕｓｉｎｅｓｓ Ｍａｃｈｉｎｅｓ Ｃｏｒｐｏｒａｔｉｏｎ 複数のテープカートリッジにファイルをスパニングして書込む方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120127606A1 (en) * 2004-09-27 2012-05-24 Spectra Logic Corporation Self-describing a predefined pool of tape cartridges
JP2006172400A (ja) * 2004-12-20 2006-06-29 Fujitsu Ltd データ管理方法及び装置並びに階層型記憶装置
JP2016095766A (ja) * 2014-11-17 2016-05-26 インターナショナル・ビジネス・マシーンズ・コーポレーションＩｎｔｅｒｎａｔｉｏｎａｌ Ｂｕｓｉｎｅｓｓ Ｍａｃｈｉｎｅｓ Ｃｏｒｐｏｒａｔｉｏｎ 複数のテープカートリッジにファイルをスパニングして書込む方法

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