Method, a device, and a computer program product for adjusting a storage space

Patent metadata

Field	Value
Publication number	US-11487704-B2
Application number	US-202016883159-A
Country	US
Kind code	B2
Filing date	May 26, 2020
Priority date	Oct 21, 2019
Publication date	Nov 1, 2022
Grant date	Nov 1, 2022

Abstract

Techniques for adjusting storage space involve: receiving a request for adjusting available storage space of a user in a filesystem from a first size to a second size; determining whether to allow to adjust the available storage space based on the request; and in response to allowing to adjust the available storage space, adjusting the available storage space to the second size. Accordingly, not only operations that an administrator needs to perform for adjusting the available storage space of a user is reduced, but also a quick and correct response for a request from a user of adjusting the available storage space is guaranteed.

First claim

We claim:

1. A method for adjusting storage space, comprising:
receiving, by a processor, a request for adjusting available storage space of a user in a filesystem from a first size to a second size;
determining, by the processor, whether to allow to adjust the available storage space based on the request; and
in response to allowing to adjust the available storage space, adjusting, by the processor, the available storage space to the second size,

wherein adjusting the available storage space to the second size comprises:
obtaining a start time point for adjusting the available storage space from the request; and adjusting the available storage space to the second size at the start time point, and

wherein determining whether to allow to adjust the available storage space comprises:
determining, based on whether adjusting the available storage space to the second size will cause the filesystem to become overloaded in terms of total storage space, whether to adjust the available storage space.

2. The method according to claim 1 , further comprising:
in response to determining that adjusting the available storage space to the second size would cause the filesystem to become overloaded in terms of total storage space, rejecting the request for the processor to adjust the available storage space.

3. The method according to claim 2 , further comprising:
sending a rejection message for the request.

4. The method according to claim 1 , further comprising:
obtaining an end time point for adjusting the available storage space from the request; and
adjusting the available storage space to the first size at the end time point.

5. The method of claim 4 , wherein adjusting the available storage space to the first size comprises:
in response to determining that the storage space occupied by the user in the filesystem at the end time point is less than or equal to the first size, adjusting the available storage space to the first size.

6. The method according to claim 1 , further comprising:
obtaining an end time point for adjusting the available storage space from the request; and
in response to determining that the storage space occupied by the user in the filesystem at the end time point is greater than the first size, performing at least one of the following:
adjusting the available storage space to a size of the storage space occupied by the user at the end time point; and
sending an indication that the storage space occupied by the user at the end time point is greater than the first size.

7. The method according to claim 6 , further comprising:
in response to determining that the storage space occupied by the user in the filesystem at a first time point after the end time point is greater than the first size, performing at least one of the following:
adjusting the available storage space to a size of the storage space occupied by the user at the first time point; and
sending an indication that the storage space occupied by the user at the first time point is greater than the first size.

8. The method according to claim 1 , further comprising:
obtaining an end time point for adjusting the available storage space and a third size from the request, the third size being different from the first size and the second size; and
adjusting the available storage space to the third size at the end time point.

9. The method of claim 1 , wherein adjusting the available storage space to the second size includes:
decreasing a second available storage space of a second user based on a difference between the second size and the first size; and
increasing the available storage space of the user to the second size.

10. A method for adjusting storage space in a filesystem, comprising:
receiving, by a processor, a request for adjusting available storage space of a user in a filesystem from a first size to a second size, wherein the available storage space is provided on at least one storage device in the filesystem;
determining, by the processor, whether to allow to adjust the available storage space based on the request; and
in response to allowing to adjust the available storage space, adjusting, by the processor, the available storage space to the second size,

wherein adjusting the available storage space to the second size
comprises:
obtaining a start time point for adjusting the available storage space from the request; and
adjusting the available storage space to the second size at the start time point,

obtaining an end time point for adjusting the available storage space from the request; and
in response to determining that the storage space occupied by the user in the filesystem at the end time point is greater than the first size, performing at least one of the following:
adjusting the available storage space to a size of the storage space occupied by the user at the end time point; and
sending an indication that the storage space occupied by the user at the end time point is greater than the first size.

11. A device for adjusting storage space, comprising:
at least one processing unit; and
at least one memory coupled to the at least one processing unit and storing instructions for execution by the at least one processing unit, the instructions, when executed by the at least one processing unit, causing the device to perform an act, the act comprising:
receiving a request for adjusting available storage space of a user in a filesystem from a first size to a second size;
determining whether to allow to adjust the available storage space based on the request; and
in response to allowing to adjust the available storage space, adjusting the available storage space to the second size,

wherein adjusting the available storage space to the second size
comprises:
obtaining a start time point for adjusting the available storage space from the request; and
adjusting the available storage space to the second size at the start time point, and

wherein determining whether to allow to adjust the available storage
space comprises:
determining, based on whether adjusting the available storage space to the second size will cause the filesystem to become overloaded in terms of total storage space, whether to adjust the available storage space.

12. The device according to claim 11 , wherein the acts further comprise:
in response to determining that adjusting the available storage space to the second size would cause the filesystem to become overloaded in terms of total storage space, rejecting the request for the processor to adjust the available storage space.

13. The device according to claim 12 , wherein the acts further comprise:
sending a rejection message for the request.

14. The device according to claim 11 , wherein the acts further comprise:
obtaining an end time point for adjusting the available storage space from the request; and
adjusting the available storage space to the first size at the end time point.

15. The device of claim 14 , wherein adjusting the available storage space to the first size comprises:
in response to determining that the storage space occupied by the user in the filesystem at the end time point is less than or equal to the first size, adjusting the available storage space to the first size.

16. The device according to claim 11 , wherein the acts further comprise:
obtaining an end time point for adjusting the available storage space from the request; and
in response to determining that the storage space occupied by the user in the filesystem at the end time point is g

Assignees

• Emc Ip Holding Co Llc

Inventors

• Tan Jiang
• Wang Hao
• Zhao Chaojun
• Zeng Hongyuan
• Zhang Yang

Classifications

• G06F3/067

  Distributed or networked storage systems, e.g. storage area networks [SAN], network attached storage [NAS] · CPC title

• G06F3/0644

  Management of space entities, e.g. partitions, extents, pools · CPC title

• G06F3/0607

  by facilitating the process of upgrading existing storage systems, e.g. for improving compatibility between host and storage device · CPC title

• G06F16/13

  File access structures, e.g. distributed indices (arrangements of input from, or output to, record carriers G06F3/06) · CPC title

• G06F16/122 Primary

  using management policies (point-in-time backing up or restoration of persistent data G06F11/1446; file migration policies for HSM systems G06F16/185) · CPC title