US 8,028,010 B2Granted

Adjusting log size in a static logical volume

AssigneeInternational Business Machines Corporation

InventorsMark Allen Grubbs, Gerald Francis McBrearty, Duyen M Tong

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Abstract

A method, system, and program for adjusting the size of a file system and an inline file system log housed in a static logical volume. A computer system includes a logical volume allocated between an file system and its inline file system log. A request is received to adjust the inline log from a current size to a new size while maintaining the size of the logical volume. Storage space is then allocated from within the logical volume to the inline log according to the storage requirement for the new size. Allocating storage space may require decreasing or increasing the amount of storage formerly allocated to the inline log. Then, the inline log is reformatted to the allocated storage space, such that the storage allocated to the inline log for a file system is adjusted while the size of the logical volume housing the inline log and file system remains static.

Claims10

Dependent claims

A system for adjusting the size of an inline log for a file system without adjusting a size of a logical volume storing said inline log and said file system, comprising:

a logical volume manager for managing allocation of a storage space into at least one logical volume for a file system of a particular size allocation wherein both an inline log for the file system and the file system are stored within a portion of said storage space of said particular size allocation allocated to said at least one logical volume;
said logical volume manager for receiving a request to adjust an allocated size for said inline log for said file system within said storage space from a current size allocation to a new size allocation while maintaining said particular size allocation of said at least one logical volume;
said logical volume manager, responsive to said request to adjust said allocated size for said inline log for said file system from said current size allocation to said new size allocation while maintaining said particular size allocation of said at least one logical volume, for shrinking a portion of a total storage space allocated to said file system within said logical volume and allocating additional storage space available from shrinking said portion of said total storage space allocated to said file system from within said logical volume to said inline log according to a storage space requirement for said new size allocation;
and
said logical volume manager for reformatting said inline log to said additional allocated storage space.

2 more elements

A computer program product comprising a computer-readable program residing in a non-transitory computer readable medium, for adjusting the size of an inline log for a file system within a static logical volume, wherein said computer-readable program when executed on a computer causes the computer to:

manage allocating of a storage space into at least one logical volume of a particular size allocation for a file system wherein both an inline log for the file system and the file system are stored within a portion of said storage space of said particular size allocation allocated to said at least one logical volume;
receive a request to adjust an allocated size for said inline log for said file system within said storage space from a current size allocation to a new size allocation while maintaining said particular size allocation of said at least one logical volume;
responsive to said request to adjust said allocated size for said inline log for said file system from said current size allocation to said new size allocation while maintaining said particular size allocation of said at least one logical volume, shrink a portion of a total storage space allocated to said file system within said logical volume and allocating additional storage space available from shrinking said portion of said total storage space allocated to said file system from within said logical volume to said inline log according to a storage space requirement for said new size allocation;
and
reformat said inline log to said additional allocated storage space.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 11/961,694Filed 20 Dec 2007 · continuation
Priority: 12 Feb 2004
Published: US 2008/0109499 A18 May 2008
Granted: 27 Sep 2011
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

G06F 16/10
Information retrieval; Database structures therefor; File system structures therefor: file systems; File servers
G06F 3/0601
Digital input from, or digital output to, record carriers , e.g. RAID, emulated record carriers or networked record carriers: interfaces specially…
Y10S 707/99945
Object-oriented database structure: object-oriented database structure processing
G06F
Computing and data processing

Family

Application10/777,722Parent of this continuation · filed 12 Feb 2004
US 2008/0109499 A1Pre-grant publication · published 8 May 2008
US 7,346,620 B2Parent of this continuation
US 2005/0182771 A1Published application
US 8,028,010 B2This patent

From the US filing history. Foreign family members aren’t listed.