Storage device, file writing method, and non-transitory computer readable storage medium

• US 10,175,907 B2
• Filed: 03/02/2017
• Issued: 01/08/2019
• Est. Priority Date: 05/25/2016
• Status: Active Grant

• Current Assignee: Yahoo Japan Corporation (A Holdings Corp.)
• Original Assignee: Yahoo Japan Corporation (A Holdings Corp.)
• Inventors: Goto, Yasuharu
• Primary Examiner(s): Lane, John A
• Application Number:
  US15/447,811
• Publication Number:
  US 20170344305A1
• Time in Patent Office: 677 Days
• Field of Search: None
• CPC Class Codes: G06F 16/13 File access structures, e.g. distributed indices arrangements of input from, or output to, record carriers G06F3/06
• CPC Class Codes: G06F 16/166 File name conversion
• CPC Class Codes: G06F 3/0604 Improving or facilitating administration, e.g. storage management
• CPC Class Codes: G06F 3/0611 in relation to response time
• CPC Class Codes: G06F 3/0643 Management of files
• CPC Class Codes: G06F 3/0653 Monitoring storage devices or systems
• CPC Class Codes: G06F 3/067 Distributed or networked storage systems, e.g. storage area networks [SAN], network attached storage [NAS]
• CPC Class Codes: G06F 3/0689 Disk arrays, e.g. RAID, JBOD

Abstract

A storage device according to the present application includes a receiving unit and a control unit. The receiving unit receives a write request for writing a file with a specified directory name. The control unit writes the file in association with a directory of the specified directory name into a memory device, within a range up to an upper limit set for the number of files to be written in the memory device in association with each directory, in response to the write request received by the receiving unit.

Claims

1. A storage apparatus comprising:

a memory; and

a processor operatively coupled to the memory, the processor being programmed to;

receive a write request for writing a file with a specified directory name;

in response to the received write request, determine whether the received write request exceeds an upper limit set for the number of files to be written in the memory in association with a directory;

if the received write request does not exceed the upper limit, write the file in association with the directory of the specified directory name into the memory; and

if the received write request exceeds the upper limit, determine a new directory name and transmit the determined new directory name to an external server or terminal by push notification such that the external server or terminal is contacted by the storage apparatus regarding a write operation of the write request only when the received write request exceeds the upper limit.

2. The storage apparatus according to claim 1, wherein, the processor restricts writing of files in association with the directory of the directory name when the counted number of files has exceeded the upper limit.

3. The storage apparatus according to claim 1, wherein when a write request for writing a file specifying the new directory name is received, the processor writes management information of a directory associated with the new directory name in a memory, and writes the file in association with the directory of the new directory name into the memory.

4. The storage apparatus according to claim 3, wherein when the processor has determined the new directory name, the processor writes a file in association with the directory of the new directory name into the memory without writing the file in association with a directory where the number of files exceeded the upper limit.

5. The storage apparatus according to claim 1, wherein when the processor has determined the new directory name, the processor writes management information of a directory associated with the determined new directory name into the memory.

6. The storage apparatus according to claim 1, wherein the processor changes the upper limit set for the number of files to be written in association with the directory on a basis of time taken to write the file in the memory.

7. The storage apparatus according to claim 1, wherein the processor is further programmed to:

includes;

request a directory name of a current directory with which a file to be written on a basis of a new write request can be associated to a notification unit, when a request from a terminal device is received by the processor.

8. The storage apparatus according to claim 1, wherein the processor is further programmed to:

report a directory name of a current directory resulting from a change when the current directory with which a file to be written on a basis of a new write request can be associated has changed.

9. A file writing method for a storage apparatus, the file writing method comprising:

receiving, by a processor, a write request for writing a file with a specified directory name;

determining, by the processor, whether the received write request exceeds an upper limit set for the number of files to be written in the memory in association with a directory in response to the received write request;

if the received write request does not exceed the upper limit, writing, by the processor, the file in association with the directory of the specified directory name into the memory; and

if the received write request exceeds the upper limit, determining, by the processor, a new directory name and transmitting the determined new directory name to an external server or terminal by push notification such that the external server or terminal is contacted by the storage apparatus regarding a write operation of the write request only when the received write request exceeds the upper limit.

10. A non-transitory computer readable storage medium having stored therein a program causing a computer having a processor and memory to execute steps comprising:

receiving, by the processor, a write request for writing a file with a specified directory name; and

determining, by the processor, whether the received write request exceeds an upper limit set for the number of files to be written in the memory in association with a directory in response to the received write request;

if the received write request does not exceed the upper limit, writing, by the processor, the file in association with the directory of the specified directory name into the memory; and

if the received write request exceeds the upper limit, determining, by the processor, a new directory name and transmitting the determined new directory name to an external server or terminal by push notification such that the external server or terminal is contacted by the computer regarding a write operation of the write request only when the received write request exceeds the upper limit.