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Bug 997878 - Kill -SIGUSR1 `pidof qemu-img convert` can not get progress of qemu-img
Summary: Kill -SIGUSR1 `pidof qemu-img convert` can not get progress of qemu-img
Keywords:
Status: CLOSED CURRENTRELEASE
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: qemu-kvm
Version: 7.0
Hardware: Unspecified
OS: Unspecified
medium
medium
Target Milestone: rc
: ---
Assignee: Kevin Wolf
QA Contact: Virtualization Bugs
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2013-08-16 11:07 UTC by juzhang
Modified: 2014-06-18 03:34 UTC (History)
6 users (show)

Fixed In Version: qemu-kvm-1.5.3-47.el7
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2014-06-13 11:02:41 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)

Description juzhang 2013-08-16 11:07:02 UTC 
Description of problem:
Kill -SIGUSR1 `pidof qemu-img convert` can not get progress of qemu-img 

Version-Release number of selected component (if applicable):
qemu-img-1.5.2-3.el7.x86_64

How reproducible:
100%

Steps to Reproduce:
1. Convert image format from qcow2 to qcow2/qcow2_v3
qemu-img convert -p /home/rhel7cp1.qcow2 -f qcow2 -O qcow2 -o compat=1.1 test.qcow2_v3
2. Issue "kill -SIGUSR1 `pidof qemu-img`" during the rebase

Actual results:
can not get progress of qemu-img 

Expected results:
Be able to get progress of qemu-img like the following image
#qemu-img convert /home/win7.qcow2 -f qcow2 -O qcow2 test.qcow2
    (2.01/100%)
    (8.02/100%)
    (10.03/100%)
    (12.03/100%)
    (14.04/100%)
    (16.04/100%)
    (18.05/100%)
    (24.06/100%)
    (26.07/100%)
    (28.07/100%)
    (30.08/100%)
    (74.19/100%)

Additional info:
1. I tried rhel6.5 qemu-img, can get the get progress of qemu-img
2. I checked the history bug and found that we supported this feature from https://bugzilla.redhat.com/show_bug.cgi?id=621482#c25
Comment 3 Miroslav Rezanina 2014-02-12 12:02:35 UTC 
Fix included in qemu-kvm-1.5.3-47.el7
Comment 5 Sibiao Luo 2014-02-14 03:04:10 UTC 
Still hit it with qemu-kvm-1.5.3-47.el7.x86_64, it fail to fix, re-assign again.

host info:
# uname -r && rpm -q qemu-kvm
3.10.0-86.el7.x86_64
qemu-kvm-1.5.3-47.el7.x86_64

# qemu-img info /home/win2008r2-64-virtio.qcow2
image: /home/win2008r2-64-virtio.qcow2
file format: qcow2
virtual size: 30G (32212254720 bytes)
disk size: 7.1G
cluster_size: 65536
Format specific information:
    compat: 0.10

# qemu-img convert -p /home/win2008r2-64-virtio.qcow2 -f qcow2 -O qcow2 -o compat=1.1 test.qcow2
^C  (20.70/100%)

Best Regards,
sluo
Comment 6 Kevin Wolf 2014-02-14 10:43:45 UTC 
Three things are confusing me about your failed test case:

1. You don't mention any command to even send SIGUSR1
2. The output you pasted does contain a percentage
3. Why do you use -p for testing SIGUSR1 handling? SIGUSR1 doesnt' have any
   effect with -p because -p always prints the progress, even without a signal.

Can you clarify, please?


Locally, I confirmed once more that the bug is indeed fixed for me:

Terminal 1:
$ qemu-img convert -O qcow2 ~/images/f18.qcow2 /tmp/out.qcow2
    (25.59/100%)
    (29.63/100%)
    (32.65/100%)
    (46.55/100%)

Terminal 2:
$ killall -SIGUSR1 qemu-img
$ killall -SIGUSR1 qemu-img
$ killall -SIGUSR1 qemu-img
$ killall -SIGUSR1 qemu-img
Comment 7 Sibiao Luo 2014-02-17 02:51:20 UTC 
(In reply to Kevin Wolf from comment #6)
> Three things are confusing me about your failed test case:
> 
> 1. You don't mention any command to even send SIGUSR1
> 2. The output you pasted does contain a percentage
> 3. Why do you use -p for testing SIGUSR1 handling? SIGUSR1 doesnt' have any
>    effect with -p because -p always prints the progress, even without a
> signal.
> 
> Can you clarify, please?
> 
OK, thanks for your point it out.
> Locally, I confirmed once more that the bug is indeed fixed for me:
> 
> Terminal 1:
> $ qemu-img convert -O qcow2 ~/images/f18.qcow2 /tmp/out.qcow2
>     (25.59/100%)
>     (29.63/100%)
>     (32.65/100%)
>     (46.55/100%)
> 
> Terminal 2:
> $ killall -SIGUSR1 qemu-img
> $ killall -SIGUSR1 qemu-img
> $ killall -SIGUSR1 qemu-img
> $ killall -SIGUSR1 qemu-img

Verified it with your instruction with qemu-kvm-1.5.3-47.el7.x86_64.
host info:
3.10.0-86.el7.x86_64
qemu-kvm-1.5.3-47.el7.x86_64

- Terminal 1:
# qemu-img convert /home/win2008r2-64-virtio.qcow2 -f qcow2 -O qcow2 -o compat=1.1 test.qcow2
    (8.70/100%)
    (10.70/100%)
    (12.71/100%)
    (16.72/100%)
    (20.73/100%)

- Terminal 2：
# kill -SIGUSR1 `pidof qemu-img`
# kill -SIGUSR1 `pidof qemu-img`
# kill -SIGUSR1 `pidof qemu-img`
# kill -SIGUSR1 `pidof qemu-img`
# kill -SIGUSR1 `pidof qemu-img`

Be able to get progress of qemu-img when kill -SIGUSR1 `pidof qemu-img convert`.

Base on above, this issue has been fixed correctly, move to VERIFIED status.

Best Regards,
sluo
Comment 9 Ludek Smid 2014-06-13 11:02:41 UTC 
This request was resolved in Red Hat Enterprise Linux 7.0.

Contact your manager or support representative in case you have further questions about the request.
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