Bug 1181000 - RFE: SeaBIOS should support bigger logical_block_size for hard disk
Summary: RFE: SeaBIOS should support bigger logical_block_size for hard disk
Keywords:
Status: CLOSED CANTFIX
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: seabios
Version: 7.1
Hardware: Unspecified
OS: Unspecified
medium
medium
Target Milestone: rc
: ---
Assignee: Virtualization Maintenance
QA Contact: Virtualization Bugs
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2015-01-12 06:49 UTC by Sibiao Luo
Modified: 2015-01-27 12:43 UTC (History)
9 users (show)

Fixed In Version:
Doc Type: Enhancement
Doc Text:
Clone Of:
Environment:
Last Closed: 2015-01-27 12:43:27 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)

Description Sibiao Luo 2015-01-12 06:49:06 UTC 
Description of problem:
Now SeaBIOS has a limitation about logical_block_size == 512 for hard disk, while according to my test that the cdrom has no such limitation. Discuses it with famz in IRC that SeaBIOS should support bigger logical_block_size.

Version-Release number of selected component (if applicable):
host info:
3.10.0-221.el7.x86_64
qemu-kvm-rhev-2.1.2-18.el7.x86_64
seabios-1.7.5-6.el7.x86_64

How reproducible:
100%

Steps to Reproduce:
1.
2.
3.

Actual results:


Expected results:


Additional info:
Comment 1 Paolo Bonzini 2015-01-27 12:43:27 UTC 
512 byte sectors are a BIOS limitation.  The BIOS interface (int 10h) does not support other sizes.  For bigger block sizes you have to use UEFI.
Note You need to log in before you can comment on or make changes to this bug.