This seems quite odd.
What happens when you set custom compatibility mode to 4.2 ?
I think it was in Edit -> system -> Advanced options -> Custom compatibility
mode -> 4.2
Best Regards,
Strahil NikolovOn Jan 12, 2020 13:24, Latchezar Filtchev <lat...@aubg.bg> wrote:
>
> Hi Strahil,
>
>
>
> Unfortunately virtio drives cannot be used. Guest OS is CentOS 5.2, kernel
> 2.6.18-92.1.17.el5.centos.plusPAE
>
>
>
> The network connectivity of the VM is very short (please see below). Till I
> connect the VM (via spice) network connectivity is already gone.
>
> tcpdump –I eth0 –v
>
> tcpdump: listening on eth0, link-type EN10MB ( Ethernet ), capture 96 bytes
>
>
>
> 0 packets captured
>
> 0 packets received by filer
>
> 0 packets dropped by kernel
>
>
>
> From 172.17.17.7 icmp_seq=60 Destination Host Unreachable
>
> From 172.17.17.7 icmp_seq=61 Destination Host Unreachable
>
> From 172.17.17.7 icmp_seq=62 Destination Host Unreachable
>
> From 172.17.17.7 icmp_seq=63 Destination Host Unreachable
>
> From 172.17.17.7 icmp_seq=64 Destination Host Unreachable
>
> From 172.17.17.7 icmp_seq=65 Destination Host Unreachable
>
> 64 bytes from 172.17.16.16: icmp_seq=66 ttl=64 time=2.19 ms
>
> 64 bytes from 172.17.16.16: icmp_seq=67 ttl=64 time=0.567 ms
>
> 64 bytes from 172.17.16.16: icmp_seq=68 ttl=64 time=0.339 ms
>
> 64 bytes from 172.17.16.16: icmp_seq=69 ttl=64 time=0.337 ms
>
> 64 bytes from 172.17.16.16: icmp_seq=70 ttl=64 time=0.288 ms
>
> 64 bytes from 172.17.16.16: icmp_seq=71 ttl=64 time=0.305 ms
>
> 64 bytes from 172.17.16.16: icmp_seq=72 ttl=64 time=0.293 ms
>
> 64 bytes from 172.17.16.16: icmp_seq=73 ttl=64 time=0.346 ms
>
> 64 bytes from 172.17.16.16: icmp_seq=74 ttl=64 time=0.359 ms
>
> 64 bytes from 172.17.16.16: icmp_seq=75 ttl=64 time=0.479 ms
>
> 64 bytes from 172.17.16.16: icmp_seq=76 ttl=64 time=0.391 ms
>
> 64 bytes from 172.17.16.16: icmp_seq=77 ttl=64 time=0.302 ms
>
> 64 bytes from 172.17.16.16: icmp_seq=78 ttl=64 time=0.327 ms
>
> 64 bytes from 172.17.16.16: icmp_seq=79 ttl=64 time=0.321 ms
>
> From 172.17.17.7 icmp_seq=125 Destination Host Unreachable
>
> From 172.17.17.7 icmp_seq=126 Destination Host Unreachable
>
> From 172.17.17.7 icmp_seq=127 Destination Host Unreachable
>
> From 172.17.17.7 icmp_seq=128 Destination Host Unreachable
>
>
>
> Thank you!
>
> Best,
>
> Latcho
>
>
>
>
>
> From: Strahil Nikolov <hunter86...@yahoo.com>
> Sent: Sunday, January 12, 2020 12:52 PM
> To: users <users@ovirt.org>; Latchezar Filtchev <lat...@aubg.bg>
> Subject: Re: [ovirt-users] Re: Unstable VM network connectivity after upgrade
> 4.2.8 to 4.3.7
>
>
>
> Hi Lacho,
>
>
>
> Can you run the virtio drivers ?
>
>
>
> They are the most tested in KVM .
>
>
>
> Also, can you run a tcpdump (with e1000) and check what is going on when the
> network disapperead?
>
>
>
> Best Regards,
>
> Strahil Nikolov
>
>
>
> В неделя, 12 януари 2020 г., 09:22:52 ч. Гринуич+2, Latchezar Filtchev
> <lat...@aubg.bg> написа:
>
>
>
>
>
> Dear Strahi,
>
>
>
> I tried rtl8139. The behavior is the same.
>
>
>
> Best,
>
> Latcho
>
>
>
>
>
> From: Strahil <hunter86...@yahoo.com>
> Sent: Sunday, January 12, 2020 1:19 AM
> To: Latchezar Filtchev <lat...@aubg.bg>; users <users@ovirt.org>
> Subject: Re: [ovirt-users] Unstable VM network connectivity after upgrade
> 4.2.8 to 4.3.7
>
>
>
> Hi Latcho,
>
> Most probably it's a bug.
> Have you tried virtio and/or rtl-based NIC ?
>
> As far as I know, CentOS 5 supports Virtio after Kernel >= 2.6.25 .
>
> Best Regards,
> Strahil Nikolov
>
> On Jan 11, 2020 19:54, Latchezar Filtchev <lat...@aubg.bg> wrote:
>>
>> Hello Everyone,
>>
>>
>>
>> I am aware my guest OS is out of support but I experienced the following:
>>
>>
>>
>> oVirt – 4.2.8 (self-hosted engine)
>>
>> VM – CentOS 5.2; two VNIC’s ( driver used e1000) connected to different
>> VLAN’s; - no issues with network connectivity
>>
>>
>>
>> After upgrade to oVirt 4.3.7
>>
>>
>>
>> The same VM starts normally. Network is available for several seconds (10 –
>> 20 pings) and then it disappears. The machine works but no ping to/from VM.
>> When I am returning the same machine (via export domain) to oVirt 4.2.8
>> environment – it works as expected.
>>
>>
>>
>> Can someone advise on this? Any help will be greatly appreciated.
>>
>>
>>
>> Thank you.
>>
>> Best,
>>
>> Latcho
>>
>>
>>
>>
>>
>>
>
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