Bug 147373

Summary:	ioctl BLKGETSIZE64 (hdparm -g) returns garbage
Product:	[Fedora] Fedora	Reporter:	Jan Kratochvil <jan>
Component:	kernel	Assignee:	Dave Jones <davej>
Status:	CLOSED NOTABUG	QA Contact:	Brian Brock <bbrock>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	3	CC:	pfrields, wtogami
Target Milestone:	---
Target Release:	---
Hardware:	i686
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2005-02-07 22:29:55 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Jan Kratochvil 2005-02-07 18:28:06 UTC

From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8a6)
Gecko/20050111

Description of problem:
Linux kernels detects disk/partition size correctly but
ioctl(BLKGETSIZE64) being used by hdparm(8) reports wrong number.
Software Captive NTFS fails to operate on such disks.


Version-Release number of selected component (if applicable):
kernel-2.6.10-1.760_FC3

How reproducible:
Always

Steps to Reproduce:
1. cat /sys/block/hda/size
2. hdparm -g /dev/hda


Actual Results:  398297088

/dev/hda:
 geometry     = 24792/255/63, sectors = 203928109056, start = 0


Expected Results:  398297088

/dev/hda:
 geometry     = 24792/255/63, sectors = 398297088, start = 0


Additional info:

IDE block device "struct inode"->i_size contains the bogus size info.
I expect this Linux kernel bug is not Fedora-specific.

Comment 1 Jan Kratochvil 2005-02-07 22:28:41 UTC

It is a hdparm(8) bug as it should label it "bytes", not "sectors".
BLKGETSIZE64 always returned bytes and now returns bytes.
BLKGETSIZE always returned sectors and now returns sectors.
Nothing changed.