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Bug 625319 - Failed to update the media in floppy device
Summary: Failed to update the media in floppy device
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 6
Classification: Red Hat
Component: qemu-kvm
Version: 6.0
Hardware: All
OS: Linux
high
medium
Target Milestone: beta
: ---
Assignee: Kevin Wolf
QA Contact: Virtualization Bugs
URL:
Whiteboard:
Depends On:
Blocks: 580954
TreeView+ depends on / blocked
 
Reported: 2010-08-19 04:43 UTC by xhu
Modified: 2013-01-09 23:02 UTC (History)
12 users (show)

Fixed In Version: qemu-kvm-0.12.1.2-2.122.el6
Doc Type: Bug Fix
Doc Text:
Cause: bugs in the 'removable' check for virtual media change for 'if=none' devices in qemu-kvm. Consequence: it was not possible to change the media for virtual floppy devices. Fix: added code to support virtual media change for if=none devices too. Result: changing of media of virtual floppy devices now works.
Clone Of:
Environment:
Last Closed: 2011-05-19 11:26:55 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2011:0534 0 normal SHIPPED_LIVE Important: qemu-kvm security, bug fix, and enhancement update 2011-05-19 11:20:36 UTC

Description xhu 2010-08-19 04:43:04 UTC 
Description of problem:
Failed to update the media in floppy device

Version-Release number of selected component (if applicable):
kernel-2.6.32-63.el6.x86_64
libvirt-0.8.1-25.el6.x86_64
qemu-kvm-0.12.1.2-2.111.el6.x86_64

How reproducible:
everytime

Steps to Reproduce:
1. Make two floppy disk image file
# dd if=/dev/zero of=/var/lib/libvirt/images/fd1.img count=1024 bs=1024
# mkfs.ext3 /var/lib/libvirt/images/fd1.img
# dd if=/dev/zero of=/var/lib/libvirt/images/fd2.img count=1024 bs=1024
# mkfs.ext3 /var/lib/libvirt/images/fd2.img
2. Define a domain with floppy device connected with in config xml file
<disk type='file' device='floppy'>
    <driver name='qemu' type='raw'/>
      <source file='/var/lib/libvirt/images/fd1.img'/>
      <target dev='fda' bus='fdc'/>
</disk>
3.Start the domain
# virsh start rhel6
Domain rhel6 started
4. In guest, mount floppy device, do some write opertion to floppy device.
# modprobe floppy
# mount /dev/fd0 /media
5. Prepare a xml as flollowing:
# cat floppy.xml
<disk type='file' device='floppy'>
    <driver name='qemu' type='raw'/>
      <source file='/var/lib/libvirt/images/fd2.img'/>
      <target dev='fda' bus='fdc'/>
</disk>
6. Try to update the media int floppy device
# virsh update-device rhel6 floppy.xml
error: Failed to update device from floppy.xml
error: internal error unable to execute QEMU command 'change': Device 'drive-fdc0-0-0' is not removable

Actual results:
After step 6, Failed to update the media int floppy device and error occures.

Expected results:
After step 6, the floppy device should be updated successfully.

Additional info:
Comment 2 Daniel Berrangé 2010-08-19 08:02:01 UTC 
QEMU seems to be confused, thinking the floppy is a fixed disk device. It is obviously removable.
Comment 3 Mike Cao 2010-08-20 05:37:52 UTC 
1.start VM with 
-drive file=/virtio-win-1.1.12-0.vfd,if=none,id=drive-fdc0-0-0,format=raw -global isa-fdc.driveA=drive-fdc0-0-0
2.(qemu)info block
drive-fdc-0-0-0:type=hd removable=0 file=/virtio-win-1.1.12.0.vfd ro=0 drv=raw encrypted=0.

This will hit the issue described in comment #0.


Addtional:
1.start VM with -fda /virtio-win.vfd
2.(qemu)info block
floppy0:type=floppy removable=1 locked =0 file=/virtio-vin.vfd ro=0 drv=raw encrypted=0

In this way floppy can be changed.
Comment 8 Shirley Zhou 2010-12-29 05:18:32 UTC 
Reproduce this bug with qemu-kvm-0.12.1.2-2.113.el6.x86_64.rpm
# virsh update-device RHEL6 floppy.xml
error: Failed to update device from floppy.xml
error: internal error unable to execute QEMU command 'change': Device 'drive-fdc0-0-0' is not removable

Verify this bug with qemu-kvm-0.12.1.2-2.128.el6.x86_64.rpm
#virsh update-device RHEL6 floppy.xml
Device updated successfully

so this bug has been fixed.
Comment 10 Eduardo Habkost 2011-05-05 19:38:54 UTC 
    Technical note added. If any revisions are required, please edit the "Technical Notes" field
    accordingly. All revisions will be proofread by the Engineering Content Services team.
    
    New Contents:
Cause: bugs in the 'removable' check for virtual media change for 'if=none' devices in qemu-kvm.
Consequence: it was not possible to change the media for virtual floppy devices.
Fix: added code to support virtual media change for if=none devices too.
Result: changing of media of virtual floppy devices now works.
Comment 11 errata-xmlrpc 2011-05-19 11:26:55 UTC 
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on therefore solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.

http://rhn.redhat.com/errata/RHSA-2011-0534.html
Comment 12 errata-xmlrpc 2011-05-19 12:47:36 UTC 
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on therefore solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.

http://rhn.redhat.com/errata/RHSA-2011-0534.html
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