[libvirt-users] Getting "Unable to set XATTR" on libvirt 5.6.0 inside containers
by Roman Mohr
Hi,
We are updating KubeVirt to libvirt 5.6.0. Before that we were running on
5.0.0. It seems like something regarding setting xattrs on files has
changed, because with libvirt 5.6.0 we are getting the following error:
```
Unable to set XATTR trusted.libvirt.security.dac on
/var/lib/libvirt/qemu/domain-410-default_vmi-fedora: Operation not
permitted')
```
The main problem is for us is that container filesystems don't necessarily
support setting xattrs.
My questions would therfore be:
* Does anyone know what has changed, and why?
* Can it be disabled?
Thanks a lot and Best Regards,
Roman
4 years, 8 months
[libvirt-users] virsh snapshot-create --print-xml seems to ignore most arguments
by Timo Schneider
Hi,
I am wondering if the --print-xml option is working correctly. The
output for two snapshot-create commands are the same, even though the
first one includes additional options (no-metadata and atomic).
I want to use the generated XML to create a snapshot via a perl script,
and Sys::Virt only seems to support snapshots using a XML description
of the arguments.
timos@cerberus:~$ sudo virsh snapshot-create-as --domain web guest-
state1 --diskspec hda,file=overlay1.qcow2 --disk-only --atomic --no-
metadata --print-xml
<domainsnapshot>
<name>guest-state1</name>
<disks>
<disk name='hda'>
<source file='overlay1.qcow2'/>
</disk>
</disks>
</domainsnapshot>
timos@cerberus:~$ sudo virsh snapshot-create-as --domain web guest-
state1 --diskspec hda,file=overlay1.qcow2 --disk-only --print-xml
<domainsnapshot>
<name>guest-state1</name>
<disks>
<disk name='hda'>
<source file='overlay1.qcow2'/>
</disk>
</disks>
</domainsnapshot>
My libvirt version is:
Compiled against library: libvirt 5.6.0
Using library: libvirt 5.6.0
Using API: QEMU 5.6.0
Running hypervisor: QEMU 4.1.0
Regards,
Timo
4 years, 8 months
[libvirt-users] FYI mail problems for libvirt lists
by Daniel P. Berrangé
It has come to our attention that many, possibly even all, people with
non-redhat.com email addresses are unable to send mail to most libvirt
mailing lists, receiving bounce messages saying the address doesn't
exist eg
Final-Recipient: rfc822; libvirt-users(a)redhat.com
Action: failed
Status: 5.0.0
Remote-MTA: dns; us-smtp-inbound-1.mimecast.com
Diagnostic-Code: smtp; 550 Invalid Recipient -
https://community.mimecast.com/docs/DOC-1369#550
[boadZMN8PrGodBBK6pzKWg.us309]
In my testing, libvir-list(a)redhat.com is the only list that is currently
accepting incoming mail from non-redhat.com addresses.
I see bounces from libvirt-users(a)redhat.com, libvirt-ci(a)redhat.com,
libvirt-announce(a)redhat.com and libvirt-security(a)redhat.com, as well
as from the undocumented alias libvirt-list(a)redhat.com
We believe outgoing mail delivery is still working normally in all
cases.
The problems appear to be caused by some changes that Red Hat
administrators made to the email infrastructure recently.
We have a severity 1 ticket open for this issue and are taking all
possible steps to escalate it & get it resolved at the soonest
opportunity.
In the mean time if any users need assistance with libvirt questions,
please feel free to ignore our normal guidance and use the main development
list libvir-list(a)redhat.com for questions, as this appears to still be
working.
Alternatively you can use IRC #virt on irc.oftc.net
If you need to report any security issues with libvirt, please try the
libvirt-security(a)redhat.com list first, but if you get a bounce then
email myself directly.
Please accept our apologies for the disruption this is causing to the
libvirt mailing lists.
Regards,
Daniel
--
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4 years, 8 months
[libvirt-users] Descriptions of mdev types?
by Milan Zamazal
Hi, when retrieving an mdev device info using `virsh nodedev-dumpxml' or
the libvirt API, something like the following is returned:
<capability type='mdev_types'>
<type id='nvidia-210'>
<name>GRID M60-2B4</name>
<deviceAPI>vfio-pci</deviceAPI>
<availableInstances>4</availableInstances>
</type>
...
</capability>
Besides device_api, available_instances and (optional) `name',
`description' of the given mdev type may be optionally provided in
/sys/.../mdev_supported_types/... for each of the available mdev types.
I can see in the sources that libvirt doesn't try to retrieve it -- is
it intentionally or is it just an omission? If the latter, could it be
added, please? It looks like a useful piece of information for the user
to get an idea what the given mdev type means.
Thanks,
Milan
4 years, 8 months
[libvirt-users] libvirt_lxc memory limit, emulator process part of the cgroup?
by Maximilian Philipps
hi,
I am currently investigating a bug with libvirt lxc. Whenever I do a
systemctl daemon-reload on the host, my container loses his memory limit
and then reports having access to 8 exabyte of memory.
I have tracked the issue down to two parts:
memory.limit_in_bytes jumps from the correct value to 9223372036854771712.
libvirt lxc appears to set the memory limit in transient way without
writing a config for systemd. I can't prevent memory.limit_in_bytes
changing by setting the correct value through systemctl set-property
--runtime <scope> MemoryLimit=
tasks in the memory cgroup gets cleaned up.
After starting the container the cgroup contains 3 pid. The pid of the
libvirt_lxc process, the pid of the init process in the container and
third unknown pid that doesn't exists in /proc/.
After a demon-reload only the init process remains in the cgroup and
unless I move the libvirt_lxc process into the cgroup the memory limit
isn't enforced.
I have also noticed that when starting libvirtd it complains about
GetMachineByPID failing for the libvirt_lxc process.
This leaves me with one big question, the the emulator process
libvirt_lxc supposed to be part of the container's cgroup or not? The
leader of the container is the init process in the container. I am
unsure on how the additional emulator process is supposed to be registered.
Using: Debian Stretch, libvirt 5.0.0-4, systemd 241-7~deb10u1 and hybrid
cgroups.
Regards,
Maximilian Philipps
4 years, 8 months
[libvirt-users] Understanding the use of virt-install from the CLI (Linux)
by jonetsu
Hello,
I've created several VMs using virt-manager and am using them. This
time around though, I'd like to use the CLI approach. The problem
resides in defining a storage space. This is using virt-install 1.5.1
on Xubuntu 18.04.
For the occasion I created a new directory to store images. So I
specify this new directory:
virt-install \
--name=arch01 \
--disk path=/Share2/KVMImages/arch01.qcow2 \
--disk size=10 \
[ ... ]
The above will not work as it reports:
'must be a file or a device, not a directory'
So I specify a file:
[ ... ]
--disk path=/Share2/KVMImages/arch01.qcow2 \
--disk size=10 \
[ ... ]
And it reports:
'Size must be specified for non existent volume 'arch01.qcow2''
But the size is already specified as one of the options.
This is where I'm puzzled about the process. What is going on ?
4 years, 8 months
[libvirt-users] Where can I find the slirp-helper?
by Han Han
For the libvirt 5.8 release, I find that there is a new comment in
qemu.conf:
#slirp_helper = "/usr/bin/slirp-helper"
It indicates that there is a slirp-helper to help setup slirp network. But
I cannot
find it even after I built the latest qemu(v4.1.0-1378-g98b2e3c9ab) and
libvirt
(v5.9.0-rc1-2-g73f91d659b).
Could you please tell me where I can find that helper program?
Thanks
--
Best regards,
-----------------------------------
Han Han
Quality Engineer
Redhat.
Email: hhan(a)redhat.com
Phone: +861065339333
4 years, 8 months
[libvirt-users] 32 bit support
by Phill. Whiteside
Hi good people,
I've got a bit of a weird issue. I'm using QEMU emulator version
2.11.1(Debian 1:2.11+dfsg-1ubuntu7.19) And after some considerable time of
not using it for 32bit installations I now find that it can no longer
install some older 32 bit installations (e.g.
https://phillw.net/isos/lubuntu/natty/ ) The CPU goes to 100% and then
after a while it just stops (I'm using virt-manager v1.5.1) I'm running
lubuntu 18.04 (64 bit) on an i7 chipset that runs 64 bit debian / centos
and MS server 2019 KVM instances via virt-manager without problems.
Any pointers would be appreciated,
Phill.
4 years, 8 months
[libvirt-users] It takes long time to start kvm virtual machine with nwfilter in docker container.
by John Y.
1. It takes minutes to start the virtual machine when I add "filterref" to
libvirt.xml and run command "virsh start vm1".
It also takes minutes to destroy the virtual machine.
<interface type="bridge">
<mac address="fa:16:3e:fa:f7:94"/>
<target dev="tap69e948b0-bf"/>
<source bridge="br02"/>
<model type="virtio"/>
<filterref filter="no-arp-spoofing">
<parameter name="IP" value="192.168.2.2"/>
<parameter name="MAC" value="fa:16:3e:fa:f7:94"/>
</filterref>
</interface>
2. I found some logs in /var/log/libvirt/libvirtd.log
2019-11-04 03:46:18.495+0000: 15257: info : virFirewallApplyRule:815 :
Applying rule '/usr/sbin/ebtables --concurrent -t nat -D PREROUTING -i
tap69e948b0-bf -j libvirt-J-tap69e948b0-bf'
2019-11-04 03:46:18.495+0000: 15257: debug : virCommandRunAsync:2499 :
About to run /usr/sbin/ebtables --concurrent -t nat -D PREROUTING -i
tap69e948b0-bf -j libvirt-J-tap69e948b0-bf
2019-11-04 03:46:18.496+0000: 15257: debug : virFileClose:111 : Closed fd 24
2019-11-04 03:46:18.496+0000: 15257: debug : virFileClose:111 : Closed fd 26
2019-11-04 03:46:18.496+0000: 15257: debug : virFileClose:111 : Closed fd 29
2019-11-04 03:46:18.496+0000: 15257: debug : virCommandRunAsync:2502 :
Command result 0, with PID 16291
2019-11-04 03:46:19.242+0000: 15257: debug : virCommandRun:2350 : Result
invalid value 255, stdout: '' stderr: '2019-11-04 03:46:19.239+0000: 16291:
debug : virFileClose:111 : Closed fd 26
2019-11-04 03:46:19.239+0000: 16291: debug : virFileClose:111 : Closed fd 29
2019-11-04 03:46:19.239+0000: 16291: debug : virFileClose:111 : Closed fd 24
Illegal target name 'libvirt-J-tap69e948b0-bf'.
'
2019-11-04 03:46:19.242+0000: 15257: debug : virFirewallApplyRuleDirect:704
: Ignoring error running command
2019-11-04 03:46:19.242+0000: 15257: debug : virFileClose:111 : Closed fd 25
2019-11-04 03:46:19.243+0000: 15257: debug : virFileClose:111 : Closed fd 28
2019-11-04 03:46:19.243+0000: 15257: info : virFirewallApplyRule:815 :
Applying rule '/usr/sbin/ebtables --concurrent -t nat -D POSTROUTING -o
tap69e948b0-bf -j libvirt-P-tap69e948b0-bf'
2019-11-04 03:46:19.243+0000: 15257: debug : virCommandRunAsync:2499 :
About to run /usr/sbin/ebtables --concurrent -t nat -D POSTROUTING -o
tap69e948b0-bf -j libvirt-P-tap69e948b0-bf
2019-11-04 03:46:19.243+0000: 15257: debug : virFileClose:111 : Closed fd 24
2019-11-04 03:46:19.243+0000: 15257: debug : virFileClose:111 : Closed fd 26
2019-11-04 03:46:19.244+0000: 15257: debug : virFileClose:111 : Closed fd 29
2019-11-04 03:46:19.244+0000: 15257: debug : virCommandRunAsync:2502 :
Command result 0, with PID 16292
2019-11-04 03:46:19.990+0000: 15257: debug : virCommandRun:2350 : Result
invalid value 255, stdout: '' stderr: '2019-11-04 03:46:19.986+0000: 16292:
debug : virFileClose:111 : Closed fd 26
2019-11-04 03:46:19.986+0000: 16292: debug : virFileClose:111 : Closed fd 29
2019-11-04 03:46:19.986+0000: 16292: debug : virFileClose:111 : Closed fd 24
Illegal target name 'libvirt-P-tap69e948b0-bf'.
'
2019-11-04 03:46:19.990+0000: 15257: debug : virFirewallApplyRuleDirect:704
: Ignoring error running command
2019-11-04 03:46:19.990+0000: 15257: debug : virFileClose:111 : Closed fd 25
2019-11-04 03:46:19.990+0000: 15257: debug : virFileClose:111 : Closed fd 28
3. It works fine on hosts.
4. It works fine in other host's libvirt container.
How can I solve this problem?
Best regards,
John
4 years, 8 months
