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Bug 1196531

Summary:	fail to specify the physical_block_size value(not 512) for IDE disk
Product:	Red Hat Enterprise Linux 6	Reporter:	Sibiao Luo <sluo>
Component:	qemu-kvm	Assignee:	Virtualization Maintenance <virt-maint>
Status:	CLOSED WORKSFORME	QA Contact:	Virtualization Bugs <virt-bugs>
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	6.7	CC:	bsarathy, chayang, famz, juzhang, kwolf, michen, mkenneth, pbonzini, qzhang, rbalakri, sluo, virt-maint, xfu
Target Milestone:	rc
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2015-02-27 02:03:27 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:

Description Sibiao Luo 2015-02-26 07:59:31 UTC

Description of problem:
separate this bug from bug 1134693 for ide fail to specify the physical_block_size.

Version-Release number of selected component (if applicable):
host info:
# uname -r && rpm -q qemu-kvm
2.6.32-538.el6.x86_64
qemu-kvm-0.12.1.2-2.454.el6.x86_64

How reproducible:
100%

Steps to Reproduce:
1.launch a KVM guest with physical_block_size=1024 specified.
e.g:...-drive file=/home/my-data-disk1.qcow2,if=none,id=drive-data-disk1,format=qcow2,cache=none,aio=native -device ide-drive,drive=drive-data-disk1,id=data-disk1,bus=ide.0,unit=0,physical_block_size=1024

2.(qemu) info qtree
...
          type IDE
          dev: ide-drive, id "data-disk1"
            dev-prop: unit = 0
            dev-prop: drive = drive-data-disk1
            dev-prop: logical_block_size = 512
            dev-prop: physical_block_size = 1024
3.check the physical_block_size from guest.
# cat /sys/block/sda/queue/physical_block_size

Actual results:
after step 3, it fail to emulate the physical_block_size correctly.
# cat /sys/block/sda/queue/physical_block_size
512

Expected results:
the physical_block_size should be 1024 in guest.

Additional info:

Comment 1 Kevin Wolf 2015-02-26 10:38:35 UTC

Are you sure that you reproduced this with the fix for bug 1134693? For me, it
just works now.

Comment 2 Sibiao Luo 2015-02-27 02:03:27 UTC

(In reply to Kevin Wolf from comment #1)
> Are you sure that you reproduced this with the fix for bug 1134693? For me,
> it
> just works now.
It also works for me now, did not find any unusual, thanks.

# rpm -q qemu-kvm
qemu-kvm-0.12.1.2-2.454.el6.x86_64
# rpm -q --changelog qemu-kvm-0.12.1.2-2.454.el6.x86_64 | grep 1134693
- kvm-ide-Check-validity-of-logical-block-size.patch [bz#1134693]
- Resolves: bz#1134693

e.g:...-drive file=/home/my-data-disk1.qcow2,if=none,id=drive-data-disk1,format=qcow2,cache=none,aio=native -device ide-drive,drive=drive-data-disk1,id=data-disk1,bus=ide.0,unit=0,physical_block_size=1024

# cat /sys/block/sda/queue/physical_block_size
1024