error during host deploy
by Dana Elfassy
Hi,
While running a test case of adding hosts on ovirt system tests there was a
failure while the following command was executed:
vdsm-tool configure --force
On libvirtd log I found this error:
2021-12-17 00:11:41.753+0000: 28031: error : virNetTLSContextNew:732 :
Unable to generate diffie-hellman parameters: Error in public key
generation.
How would you suggest to debug this failure?
attaching libvirtd & journalctl logs
libvirt version: 7.10.0, package: 1.module_el8.6.0+1046+bd8eec5e
Thanks,
Dana
The error from host deploy log:
"2021-12-17 01":"11":"45 CET - fatal":[
ost-basic-suite-master-host-0
]:"FAILED! =>"{
"changed":true,
"cmd":[
"vdsm-tool",
"configure",
"--force"
],
"delta":"0:00:06.908971",
"end":"2021-12-17 01:11:42.815057",
"msg":"non-zero return code",
"rc":1,
"start":"2021-12-17 01:11:35.906086",
"stderr":"Error: ServiceOperationError: _systemctlStart
failed\nb'Job for libvirtd.service failed because a fatal signal was
delivered causing the control process to dump core.\\nSee \"systemctl
status libvirtd.service\" and \"journalctl -xe\" for details.\\n' ",
"stderr_lines":[
"Error: ServiceOperationError: _systemctlStart failed",
"b'Job for libvirtd.service failed because a fatal signal was
delivered causing the control process to dump core.\\nSee \"systemctl
status libvirtd.service\" and \"journalctl -xe\" for details.\\n' "
],
"stdout":"\nChecking configuration status...\n\nlvm is configured
for vdsm\nCurrent revision of multipath.conf detected,
preserving\nlibvirt is already configured for vdsm\nSUCCESS: ssl
configured to true. No conflicts\nsanlock is configured for
vdsm\nManaged volume database is already configured\n\nRunning
configure...\nReconfiguration of libvirt is done.\nReconfiguration of
passwd is done.",
"stdout_lines":[
"",
"Checking configuration status...",
"",
"lvm is configured for vdsm",
"Current revision of multipath.conf detected, preserving",
"libvirt is already configured for vdsm",
"SUCCESS: ssl configured to true. No conflicts",
"sanlock is configured for vdsm",
"Managed volume database is already configured",
"",
"Running configure...",
"Reconfiguration of libvirt is done.",
"Reconfiguration of passwd is done."
]
}
2 years, 11 months
回复： Failed in using LD_PRELOAD to hook mmap system call in qemu(through libvirt)
by Xiong。
On Thu, Jan 06, 2022 at 07:44:25PM +0800, Xiong。 wrote:
> Dear sir:
> I want to hook mmap system call in qemu, and I use
> libvirt to passthrough the environment argument like this:
> <qemu:commandline>
> <qemu:env name='LD_PRELOAD' value='/glibcHookMMAP.so'/>
> </qemu:commandline>
> But it failed. I can hardly find out what is the matter!
> The log in libvirt like this:ERROR: ld.so: object
> '/glibcHookMMAP.so' from LD_PRELOAD cannot be preloaded
> (cannot open shared object file): ignored. Firstly,
> I think it's the problem of authority. But the file
> glibcHookMMAP.so has been done with command `chmod 777`.
> My environment is as follows: Ubuntu 18.04.2 Linux
> 5.4.0-92 libvirt 4.0.0 qemu 2.11.1
On Thu, Jan 06, 2022 at 09:47:25PM +0800, Daniel P. Berrangé。 wrote:
> Aside from normal file permissions, the other likely problem on Ubuntu
> will be AppArmor policy. It likely won't allow QEMU to load files from
> the / directory - if you put your .so in /usr/local/lib it might
> work.
On Thu, Jan 07, 2022 at 09:27:25AM +0800, Xiong。 wrote:
> I have a try, but it does not work and makes the same warning:
> ld.so: object '/usr/local/lib/glibcHookMMAP.so' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.
> However, I use qemu command directly and it works. Command is like this:
> sudo LD_PRELOAD=/usr/local/lib/glibcHookMMAP.so qemu-system-x86_64 -enable-kvm ...(other args).
> After that, I get print information with my hook program. And I think the problem is in passing the environment args in libvirt.
Sorry, I find out what's the matter. The AppArmor policy limits the libvirt, and modifing configuration works.
Thank you for your advise!
2 years, 11 months
Failed in using LD_PRELOAD to hook mmap system call in qemu(through libvirt)
by Xiong。
Dear sir:
I want to hook mmap system call in qemu, and I use libvirt to passthrough the environment argument like this:<qemu:commandline> <qemu:env name='LD_PRELOAD' value='/glibcHookMMAP.so'/> </qemu:commandline> But it failed. I can hardly find out what is the matter! The log in libvirt like this:ERROR: ld.so: object '/glibcHookMMAP.so' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored. Firstly, I think it's the problem of authority. But the file glibcHookMMAP.so has been done with command `chmod 777`. My environment is as follows: Ubuntu 18.04.2 Linux 5.4.0-92 libvirt 4.0.0 qemu 2.11.1
Look forward to your feedbacks.
Sincerely yours
2 years, 11 months
config vhost-user-scsi
by Jiatong Shen
Hello,
I am trying spdk vhost-user. I managed to plug in vhost-user-blk, but
did not find the doc guiding me through setting up vhost-user-scsi. Is it
supported now? Thank you.
--
Best Regards,
Jiatong Shen
2 years, 11 months
simulating multiple hypervisors with the test driver
by Tom Ammon
Hello,
I'm working on a python application that will manage multiple remote
libvirt hypervisors. I've been using the test:///default uri for
single-hypervisor tests, and it works great.
I'd like to simulate connecting to two different remote hypervisors,
however, in my testing so far it appears that multiple connections to the
test:///default uri just look like different connections to the same
hypervisor. Here's what I tried :
conn_one = libvirt.open('test:///default')
<build and start some domains>
one_vms = conn_one.listAllDomains(0)
for x in one_vms:
print(f"The vm in set one is {x.name()}")
<get list of all the domains I just built>
conn_two = libvirt.open('test:///default')
<build and start some different domains>
two_vms = conn_two.listAllDomains(0)
for z in two_vms:
print(f"The vm in set one is {z.name()}")
<get list of ALL domains including those created with conn_one, not just
those created using the conn_two instance>
What I would like is to be able to spin up two completely independent
instances of the test driver so that it can simulate two different
hypervisors/instances of libvirtd.
Is that possible?
Thanks,
Tom
--
-----------------------------------------------------------------------------
Tom Ammon
M: (737) 400-9042
thomasammon(a)gmail.com
-----------------------------------------------------------------------------
2 years, 11 months
Best way to install guest when it is not listed in output of osinfo-query os
by john doe
Hello all,
I would like to install Debian Bullseye using virt-install, as part of
the command I usually specify the OS used with the option '--os-variant'.
This works great untill Buster ('debian10'), but now the guest is
Bullseye ('debian11') and is not listed in the output of 'osinfo-query
os' (1).
If I don't use the '--os-variant' flag I get the following warning:
"WARNING No operating system detected, VM performance may suffer.
Specify an OS with --os-variant for optimal results."
Should I ignore the warning or what is the best way forward to install a
Debian Bullseye guest?
Both the host and the guest are Debian 11.
1) https://lists.debian.org/debian-user/2021/12/msg00742.html
--
John Doe
2 years, 11 months
