Note: This bug is displayed in read-only format because
the product is no longer active in Red Hat Bugzilla.
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.
Description of problem:
virDomainAddIOThread allow add iothread 0 which make guest have a broken settings
Version-Release number of selected component (if applicable):
libvirt-1.2.17-4.el7.x86_64
How reproducible:
100%
Steps to Reproduce:
1. prepare a guest
# virsh list
Id Name State
----------------------------------------------------
343 rhel7.0-rhel running
2. use python function addIOThread to add iothread 0:
# python
Python 2.7.5 (default, Sep 4 2014, 05:34:58)
[GCC 4.8.2 20140120 (Red Hat 4.8.2-16)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import libvirt
>>> conn=libvirt.open()
>>> dom=conn.lookupByName("rhel7.0-rhel")
>>> dom.addIOThread(0)
0
3.
# virsh iothreadinfo rhel7.0-rhel
IOThread ID CPU Affinity
---------------------------------------------------
1 0-3
2 0,2-3
3 0-3
0 0-3
4. restart libvirtd
# service libvirtd restart
Redirecting to /bin/systemctl restart libvirtd.service
# virsh list
Id Name State
----------------------------------------------------
and can find log in libvirtd.log:
2015-08-10 08:39:13.111+0000: 19847: error : virDomainIOThreadIDDefParseXML:13882 : XML error: invalid iothread 'id' value '0'
Actual results:
virDomainAddIOThread allow add iothread 0 which make guest have a broken settings
Expected results:
forbid add iothread 0 like deliotread
Additional info:
Hi John, I can reproduce the bug on libvirt-1.2.17-4.el7.x86_64
Verify it on libvirt-1.2.17-8.el7.x86_64
Steps to verify:
1. Prepare a runing guest
# virsh list
Id Name State
----------------------------------------------------
13 t40 running
2. Use python function addIOThread to add iothread 0:
# python
>>> import libvirt
>>> conn=libvirt.open()
>>> dom=conn.lookupByName("t40")
>>> dom.addIOThread(0)
libvirt: QEMU Driver error : invalid argument: invalid value of 0 for iothread_id
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/lib64/python2.7/site-packages/libvirt.py", line 515, in addIOThread
if ret == -1: raise libvirtError ('virDomainAddIOThread() failed', dom=self)
libvirt.libvirtError: invalid argument: invalid value of 0 for iothread_id
3. Check iothreadinfo
# virsh iothreadinfo t40
No IOThreads found for the domain
4. Restart libvirtd and check virsh list
# systemctl restart libvirtd
# virsh list
Id Name State
----------------------------------------------------
15 t40 running
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
Description of problem: virDomainAddIOThread allow add iothread 0 which make guest have a broken settings Version-Release number of selected component (if applicable): libvirt-1.2.17-4.el7.x86_64 How reproducible: 100% Steps to Reproduce: 1. prepare a guest # virsh list Id Name State ---------------------------------------------------- 343 rhel7.0-rhel running 2. use python function addIOThread to add iothread 0: # python Python 2.7.5 (default, Sep 4 2014, 05:34:58) [GCC 4.8.2 20140120 (Red Hat 4.8.2-16)] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> import libvirt >>> conn=libvirt.open() >>> dom=conn.lookupByName("rhel7.0-rhel") >>> dom.addIOThread(0) 0 3. # virsh iothreadinfo rhel7.0-rhel IOThread ID CPU Affinity --------------------------------------------------- 1 0-3 2 0,2-3 3 0-3 0 0-3 4. restart libvirtd # service libvirtd restart Redirecting to /bin/systemctl restart libvirtd.service # virsh list Id Name State ---------------------------------------------------- and can find log in libvirtd.log: 2015-08-10 08:39:13.111+0000: 19847: error : virDomainIOThreadIDDefParseXML:13882 : XML error: invalid iothread 'id' value '0' Actual results: virDomainAddIOThread allow add iothread 0 which make guest have a broken settings Expected results: forbid add iothread 0 like deliotread Additional info: