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Bug 1010610

Summary: Backport option "--output=json|human" to qemu-img info command
Product: Red Hat Enterprise Linux 6 Reporter: Xu Tian <xutian>
Component: qemu-kvmAssignee: Paolo Bonzini <pbonzini>
Status: CLOSED ERRATA QA Contact: Virtualization Bugs <virt-bugs>
Severity: high Docs Contact:
Priority: urgent    
Version: 6.5CC: acathrow, areis, bsarathy, juzhang, mkenneth, pbonzini, qzhang, sluo, tlavigne, virt-maint
Target Milestone: rcKeywords: TestBlocker
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: qemu-kvm-0.12.1.2-2.409.el6 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2013-11-21 06:02:31 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:
Bug Depends On:    
Bug Blocks: 914802, 1000882    

Description Xu Tian 2013-09-22 03:11:49 UTC 
Description of problem:


Version-Release number of selected component (if applicable):

print image info to json format is support by upstream, see below commit

commit c054b3fd78f28b12f4d066583fc0ade017752479
Author: Benoît Canet <benoit>
Date:   Wed Sep 5 13:09:02 2012 +0200

    qemu-img: Add json output option to the info command.
    
    This option --output=[human|json] make qemu-img info output on
    human or JSON representation at the choice of the user.
    
    example:
    {
        "snapshots": [
            {
                "vm-clock-nsec": 637102488,
                "name": "vm-20120821145509",
                "date-sec": 1345553709,
                "date-nsec": 220289000,
                "vm-clock-sec": 20,
                "id": "1",
                "vm-state-size": 96522745
            },
            {
                "vm-clock-nsec": 28210866,
                "name": "vm-20120821154059",
                "date-sec": 1345556459,
                "date-nsec": 171392000,
                "vm-clock-sec": 46,
                "id": "2",
                "vm-state-size": 101208714
            }
        ],
        "virtual-size": 1073741824,
        "filename": "snap.qcow2",
        "cluster-size": 65536,
        "format": "qcow2",
        "actual-size": 985587712,
        "dirty-flag": false
    }
    
    Signed-off-by: Benoit Canet <benoit>
    Signed-off-by: Kevin Wolf <kwolf>

we need to backport it;


How reproducible:


Steps to Reproduce:
1.
2.
3.

Actual results:


Expected results:


Additional info:
Comment 9 Xu Tian 2013-10-08 11:01:25 UTC 
Verify this feature with qemu-img-0.12.1.2-2.409.el6.x86_64, all test pass
1.  check image file
qemu-img create -f qcow2 test.img 1G
Formatting 'test.img', fmt=qcow2 size=1073741824 encryption=off cluster_size=65536
qemu-img info  --output=json ./test.img
{
    "virtual-size": 1073741824,
    "filename": "./test.img",
    "cluster-size": 65536,
    "format": "qcow2",
    "actual-size": 139264,
    "dirty-flag": false
}

2. check image with internal snapshot
qemu-img snapshot -c sn1 test.img
qemu-img info  --output=json ./test.img
{
    "snapshots": [
        {
            "vm-clock-nsec": 0,
            "name": "sn1",
            "date-sec": 1381232657,
            "date-nsec": 430549000,
            "vm-clock-sec": 0,
            "id": "1",
            "vm-state-size": 0
        }
    ],
    "virtual-size": 1073741824,
    "filename": "./test.img",
    "cluster-size": 65536,
    "format": "qcow2",
    "actual-size": 151552,
    "dirty-flag": false
}

3. check image file with snapshot file 
qemu-img create  -F qcow2 -b ./test.img -f qcow2 sn1
Formatting 'sn1', fmt=qcow2 size=1073741824 backing_file='./test.img' backing_fmt='qcow2' encryption=off cluster_size=65536
qemu-img info  --output=json ./test.img
{
    "snapshots": [
        {
            "vm-clock-nsec": 0,
            "name": "sn1",
            "date-sec": 1381232657,
            "date-nsec": 430549000,
            "vm-clock-sec": 0,
            "id": "1",
            "vm-state-size": 0
        }
    ],
    "virtual-size": 1073741824,
    "filename": "./test.img",
    "cluster-size": 65536,
    "format": "qcow2",
    "actual-size": 151552,
    "dirty-flag": false
}

4. check snapshot file info
qemu-img info  --output=json ./sn1
{
    "backing-filename-format": "qcow2",
    "virtual-size": 1073741824,
    "filename": "./sn1",
    "cluster-size": 65536,
    "format": "qcow2",
    "actual-size": 200704,
    "full-backing-filename": "././test.img",
    "backing-filename": "./test.img",
    "dirty-flag": false
}

5. check converted snapshot image info 
qemu-img convert ./sn1 -f qcow2 -O raw sn1.raw
qemu-img info --output=json ./sn1.raw
{
    "virtual-size": 1073741824,
    "filename": "./sn1.raw",
    "format": "raw",
    "actual-size": 0
}

thanks,
Xu
Comment 11 errata-xmlrpc 2013-11-21 06:02:31 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

http://rhn.redhat.com/errata/RHSA-2013-1553.html
Comment 12 Kevin Wolf 2014-03-21 09:33:26 UTC 
*** Bug 999749 has been marked as a duplicate of this bug. ***