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Bug 1251909 - Option -oa preallocated -of qcow2 of virt-v2v didn't work efficiently
Summary: Option -oa preallocated -of qcow2 of virt-v2v didn't work efficiently
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: libguestfs
Version: 7.2
Hardware: x86_64
OS: Unspecified
medium
medium
Target Milestone: rc
: ---
Assignee: Richard W.M. Jones
QA Contact: Virtualization Bugs
URL:
Whiteboard: V2V
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2015-08-10 09:34 UTC by tingting zheng
Modified: 2015-11-19 07:03 UTC (History)
6 users (show)

Fixed In Version: libguestfs-1.28.1-1.51.el7
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2015-11-19 07:03:04 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)
Log info (424.25 KB, text/plain)
2015-08-10 09:34 UTC, tingting zheng 		no flags Details
View All


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2015:2183 0 normal SHIPPED_LIVE libguestfs bug fix and enhancement update 2015-11-19 08:18:42 UTC

Description tingting zheng 2015-08-10 09:34:47 UTC 
Created attachment 1060991 [details]
Log info

Description:
Option -oa preallocated -of qcow2 of virt-v2v didn't work efficiently

Version:
libvirt-1.2.17-3.el7.x86_64
virt-v2v-1.28.1-1.49.el7.x86_64

How reproducible:
100%

Steps to Reproduce:
1.Use virt-v2v to convert guest with -oa preallocated -of qcow2.
# virt-v2v -ic xen+ssh://10.66.106.64 -os default -oa preallocated xen-hvm-rhel7.1-x86_64 -of qcow2 -on qcow2-preallocated
[   0.0] Opening the source -i libvirt -ic xen+ssh://10.66.106.64 xen-hvm-rhel7.1-x86_64
[   1.0] Creating an overlay to protect the source from being modified
[   1.0] Opening the overlay
[   6.0] Initializing the target -o libvirt -os default
[   6.0] Inspecting the overlay
[  29.0] Checking for sufficient free disk space in the guest
[  29.0] Estimating space required on target for each disk
[  29.0] Converting Red Hat Enterprise Linux Server release 7.1 (Maipo) to run on KVM
virt-v2v: This guest has virtio drivers installed.
[ 191.0] Mapping filesystem data to avoid copying unused and blank areas
[ 191.0] Closing the overlay
[ 192.0] Checking if the guest needs BIOS or UEFI to boot
[ 192.0] Copying disk 1/1 to /var/lib/libvirt/images/qcow2-preallocated-sda (qcow2)
    (100.00/100%)
[ 520.0] Creating output metadata
Pool default refreshed

Domain qcow2-preallocate defined from /tmp/v2vlibvirt10ab6c.xml

[ 520.0] Finishing off

2.After conversion,check the disk,it's not fully peallocated.
# ll -lsh /var/lib/libvirt/images/qcow2-preallocated-sda
3.2G -rw-r--r--. 1 root root 5.9G Aug 10 17:21 /var/lib/libvirt/images/qcow2-preallocated-sda

# qemu-img info /var/lib/libvirt/images/qcow2-preallocated-sda
image: /var/lib/libvirt/images/qcow2-preallocated-sda
file format: qcow2
virtual size: 5.9G (6291456000 bytes)
disk size: 3.2G
cluster_size: 65536
Format specific information:
    compat: 1.1
    lazy refcounts: false


Actual results：
As description.

Expected results:
Option -oa preallocated -of qcow2 work efficiently

Additional info:
1.Option -oa preallocated -of raw work efficiently.
2.Attached the detailed log.
Comment 2 Richard W.M. Jones 2015-08-12 15:58:41 UTC 
Patches posted:
https://www.redhat.com/archives/libguestfs/2015-August/msg00098.html
https://www.redhat.com/archives/libguestfs/2015-August/msg00099.html
Comment 3 Richard W.M. Jones 2015-08-12 15:59:24 UTC 
Moving to RHEL 7.3 since the bug isn't really very serious.
Comment 4 Richard W.M. Jones 2015-09-01 05:24:00 UTC 
Upstream commits:

66daad38f37c8975c4b6bcb760094cf4490fef14
42b6bb12dcbc5103044a9099d71f17a82009e7de
Comment 5 Richard W.M. Jones 2015-09-01 05:25:15 UTC 
Since I need to do another build of libguestfs today
because of a regression, might as well take this bug
for RHEL 7.2.
Comment 7 tingting zheng 2015-09-02 10:13:09 UTC 
Tested the bug with:
virt-v2v-1.28.1-1.51.el7.x86_64

Steps:
1.Use virt-v2v to convert guest with -oa preallocated -of qcow2.
# virt-v2v -ic xen+ssh://10.66.106.64 -os default -oa preallocated xen-hvm-rhel7.1-x86_64 -of qcow2 -on qcow2-preallocated
[   0.0] Opening the source -i libvirt -ic xen+ssh://10.66.106.64 xen-hvm-rhel7.1-x86_64
[   0.0] Creating an overlay to protect the source from being modified
[   1.0] Opening the overlay
[   8.0] Initializing the target -o libvirt -os default
[   8.0] Inspecting the overlay
[  31.0] Checking for sufficient free disk space in the guest
[  31.0] Estimating space required on target for each disk
[  31.0] Converting Red Hat Enterprise Linux Server release 7.1 (Maipo) to run on KVM
virt-v2v: This guest has virtio drivers installed.
[ 140.0] Mapping filesystem data to avoid copying unused and blank areas
[ 140.0] Closing the overlay
[ 142.0] Checking if the guest needs BIOS or UEFI to boot
[ 142.0] Copying disk 1/1 to /var/lib/libvirt/images/qcow2-preallocated-sda (qcow2)
    (100.00/100%)
[ 449.0] Creating output metadata
Pool default refreshed

Domain qcow2-preallocated defined from /tmp/v2vlibvirt953164.xml

[ 451.0] Finishing off


2.After conversion,check the disk,it's fully peallocated.
# ll -lsh qcow2-preallocated-sda
5.9G -rw-r--r--. 1 root root 5.9G Sep  2 17:59 qcow2-preallocated-sda

# qemu-img info qcow2-preallocated-sda
image: qcow2-preallocated-sda
file format: qcow2
virtual size: 5.9G (6291456000 bytes)
disk size: 5.9G
cluster_size: 65536
Format specific information:
    compat: 1.1
    lazy refcounts: false

Refer the above comments,the bug has been fixed,so move it's status to VERIFIED.
Comment 9 errata-xmlrpc 2015-11-19 07:03:04 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.

https://rhn.redhat.com/errata/RHBA-2015-2183.html
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