Bug 1416467

Summary:	[RFE] Add support for posix_fallocate(3) call in fallocate(1) utility
Product:	Red Hat Enterprise Linux 7	Reporter:	Denis Chaplygin <dchaplyg>
Component:	util-linux	Assignee:	Karel Zak <kzak>
Status:	CLOSED ERRATA	QA Contact:	Radka Brychtova <rskvaril>
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	7.5-Alt	CC:	bblaskov, dfediuck, rskvaril
Target Milestone:	rc	Keywords:	FutureFeature
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	util-linux-2.23.2-36.el7	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2017-08-01 21:43:41 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	1380361

Description Denis Chaplygin 2017-01-25 15:07:47 UTC

Description of problem: At the moment fallocate(1) utility uses fallocate(2) call to preallocate space to a file. That call fails if underlying filesystem, kernel or anything else doesn't support that functionality. On the other hand, posix_fallocate(3) have built-in fallback support and guarantees you, that space will always be preallocated. 

On the other hand, posix_fallocate(3) doesn't supports different preallocation modes, as fallocate(2) does.

It would be nice, if ability switch between different preallocation functions will be added, say with "--posix" key, so users will be able to select between more advanced fallocate(2) based implementation or more robust posix_fallocate(3) implementation.

Comment 8 errata-xmlrpc 2017-08-01 21:43:41 UTC

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2017:2186