Browse Prior Art Database

System and Method for donating blocks from one file to other files .

IP.com Disclosure Number: IPCOM000247755D
Publication Date: 2016-Oct-06
Document File: 3 page(s) / 72K

Publishing Venue

The IP.com Prior Art Database

Abstract

Disclosed is a device for any given file system provides functionality to manage free blocks on the underlying medium ( disks ) to files present in the file system. When file system reaches the threshold limits, space can be freed up by deleting/truncating the existing files on the file system . But it can't guarantee the freed up space to be given to a few selected files in the file system.This method proposes a controlled way of allocating freed up space to few selected files in the file system.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 59% of the total text.

Page 01 of 3

System and Method for donating blocks from one file to other files .

Disclosed is a device for provides functionality to manage free blocks on the underlying medium ( disks ) to files present in the file system. When file system reaches the threshold limits, space can be freed up by deleting/truncating the existing files on the file system . But it can't guarantee the freed up space to be given to a few selected files in the file system. This method proposes a controlled way of allocating freed up space to few selected files in the file system.

For example:


In case of Shared Storage Pools, where Logical Units ( Aka Disks ) are carved out from SSP pool. All these LUs are files in the SFStore file system. Consider a case where system has 3 LUs from the same SSP pool, assigned to 3 different Logical Partitions/VM. One of the LU is used by a very critical partitions. Pool has reached 95% of the available space. The user has decided to delete one of the partition and decided to remove its LU to free up space.

The remaining two LUs has equal rights to use the freedup space. There is no existing method to give the newly freed up space to the LU of the critical partition.

This method proposes a method to donate the disk space freed up by removing / truncating an existing file in a file system to a selected set of files on the same file system.

Methods:
1. Donee files can be already existing files or those can be created later on by a user.


2. A User can reserve space for...