8:38 a.m.
Hi all.
I use LXC on Centos 7 x86-64, with libvirt version 1.2.6 and 1.2.12
My container has bridged network:
# virsh dumpxml test1
<domain type='lxc'>
<name>test1</name>
<uuid>518539ab-7491-45ab-bb1d-3d7f11bfb0b1</uuid>
<memory unit='KiB'>1048576</memory>
<currentMemory unit='KiB'>1048576</currentMemory>
<memtune>
<hard_limit unit='KiB'>1048576</hard_limit>
<soft_limit unit='KiB'>1048576</soft_limit>
<swap_hard_limit unit='KiB'>2097152</swap_hard_limit>
</memtune>
<vcpu placement='static'>2</vcpu>
<os>
<type arch='x86_64'>exe</type>
<init>/sbin/init</init>
</os>
<clock offset='utc'/>
<on_poweroff>destroy</on_poweroff>
<on_reboot>restart</on_reboot>
<on_crash>restart</on_crash>
<devices>
<emulator>/usr/libexec/libvirt_lxc</emulator>
<filesystem type='block' accessmode='passthrough'>
<source dev='/dev/data/test1'/>
<target dir='/'/>
</filesystem>
<filesystem type='ram' accessmode='passthrough'>
<source usage='524288' units='KiB'/>
<target dir='/dev/shm'/>
</filesystem>
<interface type='direct'>
<mac address='02:00:00:1a:a9:54'/>
<source dev='br0' mode='bridge'/>
</interface>
<console type='pty'>
<target type='lxc' port='0'/>
</console>
</devices>
</domain>
And all was fine, before I accidentally upgraded Centos to 7.1.1503
After upgrade LXC can't start with diagnostic:
[root@node14 ~]# virsh start test1
error: Failed to start domain test1
error: internal error: guest failed to start: internal error: Child
process (ip link set macvlan0 netns 25263) unexpected exit status 2:
RTNETLINK answers: Invalid argument
I reinstall libvirt 1.2.14, but catch same error.
If someone will experience in solving this problem - it will be
interesting to hear about.
b.r.
Maxim Kozin
9:57 a.m.
And all was fine, before I accidentally upgraded Centos to 7.1.1503
After upgrade LXC can't start with diagnostic:
[root@node14 ~]# virsh start test1
error: Failed to start domain test1
error: internal error: guest failed to start: internal error: Child
process (ip link set macvlan0 netns 25263) unexpected exit status 2:
RTNETLINK answers: Invalid argument
I reinstall libvirt 1.2.14, but catch same error.
If someone will experience in solving this problem - it will be
interesting to hear about.
If I correct understand libvirt logic, libvirt make next
operations
with "ip" utility (depend from lxc config):
1) # ip link add link br0 name macvlan0 address 00:11:11:11:11:11
type macvlan mode bridge
2) # ip link set macvlan0 netns 1234
where 1234 - pid of lxc initd process
3) inside lxc - #ip link set dev macvlan0 name eth0
If manualy run this sequence of command, we failed on step 2).
And it's work on Centos 7.0.1406
b.r.
Maxim Kozin
5:14 a.m.
Hi all
http://bugs.centos.org/view.php?id=8417
In short - it's not Centos bug, it's probably bug of
iproute2<->netlink interactions on
kernel 3.10.0-229
As workaround you can fallback to prev kernel and command
# ip link set macvlanX namens PID
would work.
b.r.
Maxim Kozin
8:43 a.m.
On 04/08/2015 09:38 AM, mxs kolo wrote:
Hi all.
I use LXC on Centos 7 x86-64, with libvirt version 1.2.6 and 1.2.12
My container has bridged network:
# virsh dumpxml test1
<domain type='lxc'>
<name>test1</name>
<uuid>518539ab-7491-45ab-bb1d-3d7f11bfb0b1</uuid>
<memory unit='KiB'>1048576</memory>
<currentMemory unit='KiB'>1048576</currentMemory>
<memtune>
<hard_limit unit='KiB'>1048576</hard_limit>
<soft_limit unit='KiB'>1048576</soft_limit>
<swap_hard_limit unit='KiB'>2097152</swap_hard_limit>
</memtune>
<vcpu placement='static'>2</vcpu>
<os>
<type arch='x86_64'>exe</type>
<init>/sbin/init</init>
</os>
<clock offset='utc'/>
<on_poweroff>destroy</on_poweroff>
<on_reboot>restart</on_reboot>
<on_crash>restart</on_crash>
<devices>
<emulator>/usr/libexec/libvirt_lxc</emulator>
<filesystem type='block' accessmode='passthrough'>
<source dev='/dev/data/test1'/>
<target dir='/'/>
</filesystem>
<filesystem type='ram' accessmode='passthrough'>
<source usage='524288' units='KiB'/>
<target dir='/dev/shm'/>
</filesystem>
<interface type='direct'>
<mac address='02:00:00:1a:a9:54'/>
<source dev='br0' mode='bridge'/>
</interface>
Why are you using macvtap ("type='direct') to connect to a bridge
device? You should either use macvtap to connect directly to a physical
ethernet (e.g. eth0) *or* you should use a standard tap device
("type='bridge'") to connect to the bridge. Although it might work to
connect to a bridge using macvtap, I can't think of any reason you would
want to do it that way (and that may be the source of the error you're
seeing - since macvtap isn't intended to be used that way, that scenario
probably doesn't get much, if any, testing).
12:27 p.m.
Hi all
Why are you using macvtap ("type='direct') to connect to
a bridge
device? You should either use macvtap to connect directly to a physical
ethernet (e.g. eth0) *or* you should use a standard tap device
("type='bridge'") to connect to the bridge. Although it might work to
connect to a bridge using macvtap, I can't think of any reason you would
want to do it that way (and that may be the source of the error you're
seeing - since macvtap isn't intended to be used that way, that scenario
probably doesn't get much, if any, testing).
Yes, You are right.
I already think about it and can't remember why started using bridge
over iface and macvlan over bridge, may be because used common vlan:
enp2s0->enp2s0.2->br2->lxc
enp2s0->enp2s0.502->br502->lxc
Probably I need test new schema - it's would be fatser and work with
new kernel:
enp2s0->enp2s0.502->lxc:
<interface type='direct'>
<mac address='02:00:00:25:a7:56'/>
<source dev='enp2s0.2' mode='bridge'/>
</interface>
thanks for the advice !
b.r.
Maxim Kozin
3545
days inactive
3546
days old
4 comments
2 participants
participants (2)
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Laine Stump -
mxs kolo