WO2022049832A1 - 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
WO2022049832A1
WO2022049832A1 PCT/JP2021/017592 JP2021017592W WO2022049832A1 WO 2022049832 A1 WO2022049832 A1 WO 2022049832A1 JP 2021017592 W JP2021017592 W JP 2021017592W WO 2022049832 A1 WO2022049832 A1 WO 2022049832A1
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WO
WIPO (PCT)
Prior art keywords
recording
information processing
tape
derived
storage
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Application number
PCT/JP2021/017592
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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 JP2022546889A priority Critical patent/JPWO2022049832A1/ja
Publication of WO2022049832A1 publication Critical patent/WO2022049832A1/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.
  • a technique is disclosed in which export parallel processing is performed when the execution conditions of export parallel processing for recording data in parallel on a plurality of magnetic tapes are satisfied, and independent export processing is performed when the execution conditions are not satisfied (Japanese Patent Laid-Open No. (See 2013-196319).
  • the priority of the recall process to read data from the magnetic tape is set higher than the export process, and the number of free tape drives linked with the number of tape drives used in the recall process is 2 or more. Execute parallel processing.
  • a storage pool is composed of a plurality of magnetic tapes to provide a logical volume to a user.
  • recording an object using one tape drive for each storage pool may increase the recording time of the object.
  • This disclosure has been made in view of the above circumstances, and includes an information processing device, an information processing method, and an information processing program capable of shortening the time required from the start of recording to the end of recording of a group of objects to be recorded.
  • the purpose is to provide.
  • the information processing apparatus of the present disclosure is an information processing apparatus including at least one processor, and the processor accepts a request for recording an object in at least one of a plurality of storage pools each composed of a plurality of magnetic tapes. Derived the number of tape drives used to record the object that received the recording request for the recording destination storage pool, depending on the number of recording destination storage pools or magnetic tapes of the object specified by the recording request. Then, for the storage pool of the recording destination, control is performed to record objects on the magnetic tapes constituting the storage pool by using the number of tape drives derived.
  • the information processing apparatus of the present disclosure is obtained by dividing the number of tape drives that the processor can use for recording an object on a magnetic tape by the number of storage pools of the recording destination of the object specified by the recording request.
  • the value given may be derived as the number of tape drives used to record the object that received the recording request.
  • the information processing apparatus of the present disclosure may derive the number of tape drives used by the processor to record the object that has received the recording request according to the number of reading requests of the object.
  • the information processing method of the present disclosure accepts a recording request of an object to at least one of a plurality of storage pools each composed of a plurality of magnetic tapes, and a storage pool of a recording destination of the object specified by the recording request. Derived the number of tape drives used to record the object that received the recording request for the recording destination storage pool according to the number or the number of magnetic tapes, and derived the number of tapes for the recording destination storage pool.
  • a processor included in the information processing apparatus executes a process of using a drive to control recording of an object on a magnetic tape constituting a storage pool.
  • the information processing program of the present disclosure accepts a recording request of an object to at least one of a plurality of storage pools each composed of a plurality of magnetic tapes, and a storage pool of a recording destination of the object specified by the recording request. Derived the number of tape drives used to record the object that received the recording request for the recording destination storage pool according to the number or the number of magnetic tapes, and derived the number of tapes for the recording destination storage pool. This is for causing a processor included in the information processing apparatus to perform a process of controlling recording of an object on a magnetic tape constituting a storage pool by using a drive.
  • the recording / playback system 10 includes an information processing device 12 and a tape library 14.
  • Examples of the information processing apparatus 12 include a server 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 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 metadata and the data, or may be the order of the data and the metadata.
  • the information processing device 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.
  • a storage pool composed of a plurality of magnetic tapes T according to the present embodiment will be described.
  • a plurality of storage pools are prepared.
  • each storage pool contains a plurality of magnetic tapes T.
  • a case where four storage pools are prepared and each storage pool contains four magnetic tapes T will be described.
  • one storage pool is assigned to one logical volume of the information processing apparatus 12, and the logical volume is provided to the user of the recording / playback system 10.
  • the information processing device 12 receives an object to be recorded from an external device such as a user terminal, the information processing device 12 controls to record the object in the storage pool corresponding to the logical volume of the recording destination.
  • the tape library 14 includes a number of tape drives 18 that are equal to or larger than the number of storage pools and is equal to or larger than the number of magnetic tapes T included in one storage pool.
  • the tape library 14 includes four tape drives 18.
  • the information processing apparatus 12 can control the recording of objects in parallel on four magnetic tapes T included in one storage pool by using four tape drives 18. Further, for example, the information processing apparatus 12 uses four tape drives 18 to control the recording of objects on a total of four magnetic tapes T, one magnetic tape T included in each of the four storage pools. You can also do it.
  • the information processing apparatus 12 includes a reception unit 40, a derivation unit 42, and a control unit 44.
  • the CPU 20 executes the information processing program 30, it functions as a reception unit 40, a derivation unit 42, and a control unit 44.
  • the reception unit 40 receives a plurality of objects to be recorded and a recording request for the objects transmitted from an external device such as a user terminal.
  • the storage pool hereinafter referred to as “recording destination pool” of the recording destination of each object to be recorded is specified. That is, the reception unit 40 receives a recording request to at least one of the plurality of storage pools.
  • the number (hereinafter referred to as “the number of drives used") is derived.
  • the derivation unit 42 increases the number of drives used for each recording destination pool as the number of recording destination pools specified by the recording request decreases.
  • the derivation unit 42 determines the number of tape drives that can be used for recording objects on the magnetic tape T (hereinafter referred to as "the number of available drives") in the recording destination pool specified by the recording request.
  • the value obtained by dividing by the number is derived as the number of drives used.
  • the derivation unit 42 records at least one so that the total number of used drives in each storage pool is equal to the number of available drives when the number of usable drives is not divisible by the number of recording destination pools.
  • the number of drives used is derived by rounding up the first decimal place for the destination pool. In this case, the derivation unit 42 derives the number of drives used by truncating the decimal point for the remaining recording destination pool.
  • the control unit 44 controls the recording of objects on the magnetic tape T constituting the storage pool by using the number of tape drives 18 derived by the derivation unit 42 for each storage pool of the recording destination.
  • FIGS. 6 to 9 A specific example of object recording processing by the information processing apparatus 12 according to the present embodiment will be described with reference to FIGS. 6 to 9.
  • a case where the number of usable drives is four will be described as an example.
  • the control unit 44 uses four tape drives 18 for one recording destination pool to record the objects to be recorded in parallel on the four magnetic tapes T constituting the recording destination pool. Take control.
  • FIG. 6 shows an example in which “pool1” in FIG. 4 is designated as the recording destination pool of “Object1” to “Object4”.
  • the control unit 44 uses two tape drives 18 for each of the two recording destination pools to record the objects to be recorded in parallel on the two magnetic tapes T constituting the recording destination pool. Control to do.
  • FIG. 7 an example in which “pool1” in FIG. 4 is designated as the recording destination pool of “Object1” and “Object2” and “pool2” in FIG. 4 is designated as the recording destination pool of “Object3” and “Object4”. Shows.
  • the derivation unit 42 uses the decimal point number of the value obtained by dividing 4 by 3 for one recording destination pool.
  • the number of drives used is derived as 2 by rounding up to the first decimal place.
  • the derivation unit 42 derives the number of drives used as 1 for the remaining two recording destination pools by dividing 4 by 3 and truncating the value obtained by dividing the value after the decimal point.
  • the control unit 44 uses two tape drives 18 for one recording destination pool to record the objects to be recorded in parallel on the two magnetic tapes T constituting the recording destination pool. Take control.
  • FIG. 8 shows an example in which “pool1” in FIG. 4 is designated as the recording destination pool of “Object1” and “Object2”. Further, FIG. 8 shows an example in which “pool2” in FIG. 4 is designated as the recording destination pool of “Object3” and “pool3” in FIG. 4 is designated as the recording destination pool of “Object4”. Further, FIG. 8 shows an example in the case where the number of drives used for "pool1" is two.
  • the derivation unit 42 may round up the first decimal place for the recording destination pool having the largest total size of the objects to be recorded, or the first decimal place for the recording destination pool having the largest number of objects to be recorded. You may round up the place.
  • FIG. 9 shows an example in which “pool1” in FIG. 4 is designated as the recording destination pool of “Object1” and “pool2” in FIG. 4 is designated as the recording destination pool of “Object2”. Further, FIG. 9 shows an example in which “pool3” in FIG. 4 is designated as the recording destination pool of “Object3” and “pool4” in FIG. 4 is designated as the recording destination pool of “Object4”.
  • the object recording process shown in FIG. 10 is executed when, for example, the information processing apparatus 12 receives a plurality of objects to be recorded transmitted from an external device such as a user terminal.
  • step S10 of FIG. 10 the reception unit 40 receives a plurality of objects to be recorded and a recording request for the objects transmitted from an external device such as a user terminal.
  • step S12 as described above, the derivation unit 42 derives the number of drives used for each recording destination pool according to the number of recording destination pools specified by the recording request received in step S10.
  • step S14 the control unit 44 records an object on the magnetic tape T constituting the storage pool by using the number of tape drives 18 derived in step S12 for each storage pool of the recording destination. Control to do.
  • the process of step S14 is completed, the object recording process is completed.
  • the present embodiment it is possible to shorten the recording time of the object as compared with the case where one tape drive 18 is always used for each storage pool. Further, as a result of reducing the number of times the magnetic tape T is replaced as compared with the case where all the tape drives 18 (4 in this embodiment) that can always be used for each storage pool are used, the recording of the object group to be recorded is started. The time required to complete recording can be shortened. Therefore, it is possible to shorten the time required from the start of recording to the end of recording of the object group to be recorded.
  • the number of used drives is derived according to the number of recording destination pools
  • the number of drives used may be derived according to the number of magnetic tapes T of the recording destination of the object specified by the recording request. For example, depending on the storage pool of the recording destination, a policy of recording objects in parallel on a plurality of magnetic tapes T may be set. Further, for example, a recording request for a large-capacity object group that spans a plurality of magnetic tapes T may be accepted. In these cases, the derivation unit 42 derives the number of drives used as a larger value as the number of recording destination magnetic tapes T increases.
  • the derivation unit 42 determines the number of tape drives 18 (that is, the number of usable drives) used when recording the object for which the recording request is received, according to the number of reading requests of the object. It may be derived. Specifically, the derivation unit 42 reduces the number of tape drives 18 used for recording the object as the number of read requests for the object increases.
  • the number of object read requests in this case includes, for example, a predetermined period of an object having a predetermined period such as a predetermined period immediately before, a predetermined period of the same time zone of the previous day, or a predetermined period of the same time zone of the same day of the previous week. The number of read requests can be applied.
  • one or more tape drives 18 for processing read requests can be secured. Therefore, it is possible to shorten the time required from the start of recording to the end of recording of the object group to be recorded while shortening the waiting time of the read request.
  • the present invention is not limited to this.
  • the disclosed technology may be applied to a file storage system that handles data in file units.
  • the file corresponds to the object.
  • the processing unit that executes various processes such as the reception unit 40, the derivation unit 42, and the control unit 44
  • the following various processors can be used.
  • various processors in addition to the CPU, which is a general-purpose processor that executes software (program) and functions as various processing units, circuits after manufacturing FPGA (Field Programmable Gate Array) and the like are used.
  • 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

Ce dispositif de traitement d'informations : reçoit une demande d'enregistrement pour au moins un objet en provenance d'une pluralité de groupes de stockage formés à partir d'une pluralité de bandes magnétiques respectives; dérive, à partir des groupes de stockage qui sont des destinations d'enregistrement, le nombre de lecteurs de bande à utiliser pour enregistrer l'objet pour lequel la demande d'enregistrement est reçue en fonction du nombre de groupes de stockage ou du nombre de bandes magnétiques qui sont les destinations d'enregistrement de l'objet désigné par la demande d'enregistrement; et exécute, sur les groupes de stockage qui sont les destinations d'enregistrement, une commande pour enregistrer l'objet sur les bandes magnétiques formant les groupes de stockage en utilisant le nombre dérivé de lecteurs de bande.
PCT/JP2021/017592 2020-09-04 2021-05-07 Dispositif, procédé et programme de traitement d'informations WO2022049832A1 (fr)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04124721A (ja) * 1990-09-17 1992-04-24 Hitachi Ltd 高速パラレル転送方式
US20060294336A1 (en) * 2002-08-29 2006-12-28 International Business Machines Corporation Method, system, and program for moving data among storage units

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04124721A (ja) * 1990-09-17 1992-04-24 Hitachi Ltd 高速パラレル転送方式
US20060294336A1 (en) * 2002-08-29 2006-12-28 International Business Machines Corporation Method, system, and program for moving data among storage units

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
"Necessity of Backup Applications. Backups in a Nutshell Handbook, Ver. 5.", HITACHI INNOVATION FORUM, 30 June 2013 (2013-06-30), pages 1 - 39 *
DOGANATA, YURDAER N. ET AL.: "Cost Calculation for Electromagnetic Tape Devices is Complicated", NIKKEI ELECTRONICS, vol. 3, no. 4, 24 April 1995 (1995-04-24), pages 117 - 128, ISSN: 0385-1680 *

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