RHEL Engineering is moving the tracking of its product development work on RHEL 6 through RHEL 9 to Red Hat Jira (issues.redhat.com). If you're a Red Hat customer, please continue to file support cases via the Red Hat customer portal. If you're not, please head to the "RHEL project" in Red Hat Jira and file new tickets here. Individual Bugzilla bugs in the statuses "NEW", "ASSIGNED", and "POST" are being migrated throughout September 2023. Bugs of Red Hat partners with an assigned Engineering Partner Manager (EPM) are migrated in late September as per pre-agreed dates. Bugs against components "kernel", "kernel-rt", and "kpatch" are only migrated if still in "NEW" or "ASSIGNED". If you cannot log in to RH Jira, please consult article #7032570. That failing, please send an e-mail to the RH Jira admins at rh-issues@redhat.com to troubleshoot your issue as a user management inquiry. The email creates a ServiceNow ticket with Red Hat. Individual Bugzilla bugs that are migrated will be moved to status "CLOSED", resolution "MIGRATED", and set with "MigratedToJIRA" in "Keywords". The link to the successor Jira issue will be found under "Links", have a little "two-footprint" icon next to it, and direct you to the "RHEL project" in Red Hat Jira (issue links are of type "https://issues.redhat.com/browse/RHEL-XXXX", where "X" is a digit). This same link will be available in a blue banner at the top of the page informing you that that bug has been migrated.
Bug 1207122 - Wrong speed show from blockjob while set bandwidth to 1 when do blockcopy
Summary: Wrong speed show from blockjob while set bandwidth to 1 when do blockcopy
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: libvirt
Version: 7.2
Hardware: Unspecified
OS: Unspecified
medium
medium
Target Milestone: rc
: ---
Assignee: Peter Krempa
QA Contact: Virtualization Bugs
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2015-03-30 09:43 UTC by Shanzhi Yu
Modified: 2015-11-19 06:26 UTC (History)
4 users (show)

Fixed In Version: libvirt-1.2.14-1.el7
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2015-11-19 06:26:20 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2015:2202 0 normal SHIPPED_LIVE libvirt bug fix and enhancement update 2015-11-19 08:17:58 UTC

Description Shanzhi Yu 2015-03-30 09:43:22 UTC 
Description of problem:

Wrong speed show from blockjob while set bandwidth to 1 when do blockcopy

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

libvirt-1.2.13-1.el7.x86_64

How reproducible:

100%

Steps to Reproduce:
1.Prepare a transient guest
# virsh list --transient
Id Name State
----------------------------------------------------
19 vm running

2. Do blockcopy with bandwidth 1
# virsh blockcopy vm vda /mnt/vm.copy --verbose --wait --bandwidth 1
Block Copy: [100 %]
Now in mirroring phase

3. Check job info

# virsh blockjob vm vda
Block Copy: [100 %] Bandwidth limit: 1 bytes/s (1.000 B/s)

Actual results:

as show above

Expected results:

Bandwidth limit should be like:

Bandwidth limit: 1048576 bytes/s (1.000 MiB/s)

Additional info: 

blockcommit/blockpull with --bandwidth 1 work well, blockjob with --bandwidth 1 also work sell.
Comment 1 Peter Krempa 2015-03-30 18:03:06 UTC 
Fixed upstream:

commit 3c6a72d5376732efd8effb4a0a419211c0eb0659
Author: Peter Krempa <pkrempa>
Date:   Mon Mar 30 17:34:13 2015 +0200

    qemu: blockCopy: Pass adjusted bandwidth when called via blockRebase
    
    The block copy API takes the speed in bytes/s rather than MiB/s that was
    the prior approach in virDomainBlockRebase. We correctly converted the
    speed to bytes/s in the old API but we still called the common helper
    virDomainBlockCopyCommon with the unadjusted variable.

v1.2.14-rc1-14-g3c6a72d
Comment 3 Shanzhi Yu 2015-06-15 11:13:36 UTC 
Verify this bug with libvirt-1.2.16-1.el7.x86_64

1. prepare transient guest 
# virsh list --transient
 Id    Name                           State
----------------------------------------------------
 11    r7                             running


2. Do block copy with bandwidth equal 1 

# virsh blockcopy r7 vda /var/lib/libvirt/images/r7.copy --verbose --wait 1 
Block Copy: [ 98 %]

3. Open another terminal, check the blockjob info 
# virsh blockjob r7 vda 
Block Copy: [  1 %]    Bandwidth limit: 1048576 bytes/s (1.000 MiB/s)

So, verify this bug
Comment 5 errata-xmlrpc 2015-11-19 06:26:20 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-2015-2202.html
Note You need to log in before you can comment on or make changes to this bug.