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Vieri
l33t
Joined: 18 Dec 2005
Posts: 877
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 Posted: Wed Dec 01, 2021 10:13 am Post subject: Gentoo system freeze when changing network config |
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Hi,
I've run into trouble today when changing a perfectly running Gentoo system's network settings.
The only thing I did was to change the way 3 NICs bond. I went from balance-alb to 802.3ad (LACP).
Of course, I changed the connections of the Gentoo router to my root switch so that they are LACP too.
I also set extra params to make sure they are the same on both systems:
LACP_RATE
MIIMON
XMIT_HASH_POLICY
However, after I restart the lan interface with
| Code: | | /etc/init.d/net.lan restart |
the whole Gento system freezes. I am connected to the VGA console, but the screen simply freezes.
I cannot access the Gentoo OS from the rest of the network so it is definitely failing.
A hard-reboot does not help (even if I fall back to using balance-alb again). It boots up to the point of configuring the network but then dies.
I had to replace this critical system with another one. That allowed me to check the logs, but I really don't know where it's failing.
The only errors I see are:
| Code: | kernel: udevd[4908]: Error changing net interface name lan.12 to lanixa: File exists
kernel: udevd[4908]: could not rename interface '40' from 'lan.12' to 'lanixa': File exists |
My udev rules file contians a line such as:
| Code: | | SUBSYSTEM=="net", ACTION=="add", ATTR{address}=="ac:1f:6b:f5:b8:6f", NAME="lanixa" |
This is how I configure the network in conf.d/net:
| Code: | config_lanixa="null"
config_lanma="null"
config_lanmb="null"
slaves_lan="lanixa lanma lanmb"
# mode_lan="balance-alb"
mode_lan="802.3ad"
vlans_lan="1 8 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 29 60 61" |
And this is just about all I can see in /var/log/messages right before the freeze:
| Code: | Dec 1 07:15:34 fw1 kernel: lan: (slave lanixa): Releasing active interface
Dec 1 07:15:34 fw1 kernel: lan: (slave lanixa): the permanent HWaddr of slave - ac:1f:6b:f5:b7:1b - is still in use by bond - set
the HWaddr of slave to a different address to avoid conflicts
Dec 1 07:15:34 fw1 kernel: lan: (slave lanma): making interface the new active one
Dec 1 07:15:34 fw1 kernel: ixgbe 0000:01:00.1: removed PHC on lanixa
Dec 1 07:15:35 fw1 kernel: lan: (slave lanma): Releasing active interface
Dec 1 07:15:35 fw1 kernel: lan: (slave lanmb): making interface the new active one
Dec 1 07:15:35 fw1 kernel: lan: (slave lanmb): Releasing active interface
Dec 1 07:15:35 fw1 kernel: bonding: lan is being deleted...
Dec 1 07:15:35 fw1 kernel: lan (unregistering): Released all slaves
Dec 1 07:15:35 fw1 kernel: bonding: lan is being created...
Dec 1 07:15:35 fw1 /etc/init.d/net.lan[99608]: net.lan: not allowed to be hotplugged
Dec 1 07:15:35 fw1 kernel: 8021q: adding VLAN 0 to HW filter on device lan
Dec 1 07:15:36 fw1 kernel: pps pps0: new PPS source ptp4
Dec 1 07:15:36 fw1 kernel: ixgbe 0000:01:00.1: registered PHC device on lanixa
Dec 1 07:15:36 fw1 kernel: 8021q: adding VLAN 0 to HW filter on device lanixa
Dec 1 07:15:36 fw1 kernel: lan: (slave lanixa): Enslaving as a backup interface with a down link
Dec 1 07:15:36 fw1 kernel: mlx5_core 0000:41:00.0 lanma: Link up
Dec 1 07:15:36 fw1 kernel: 8021q: adding VLAN 0 to HW filter on device lanma
Dec 1 07:15:36 fw1 kernel: lan: (slave lanma): Enslaving as a backup interface with an up link
Dec 1 07:15:36 fw1 kernel: mlx5_core 0000:41:00.1 lanmb: Link up
Dec 1 07:15:36 fw1 kernel: 8021q: adding VLAN 0 to HW filter on device lanmb
Dec 1 07:15:36 fw1 kernel: lan: (slave lanmb): Enslaving as a backup interface with an up link
Dec 1 07:15:36 fw1 kernel: udevd[95523]: Error changing net interface name lan.1 to lanixa: File exists
Dec 1 07:15:36 fw1 kernel: udevd[95523]: could not rename interface '74' from 'lan.1' to 'lanixa': File exists
Dec 1 07:15:37 fw1 kernel: udevd[95523]: Error changing net interface name lan.8 to lanixa: File exists
Dec 1 07:15:37 fw1 kernel: udevd[95523]: could not rename interface '75' from 'lan.8' to 'lanixa': File exists
Dec 1 07:15:37 fw1 kernel: udevd[95523]: Error changing net interface name lan.12 to lanixa: File exists
Dec 1 07:15:37 fw1 kernel: udevd[95523]: could not rename interface '76' from 'lan.12' to 'lanixa': File exists
Dec 1 07:15:37 fw1 kernel: udevd[95523]: Error changing net interface name lan.13 to lanixa: File exists
Dec 1 07:15:37 fw1 kernel: udevd[95523]: could not rename interface '77' from 'lan.13' to 'lanixa': File exists
Dec 1 07:15:37 fw1 /etc/init.d/net.lan[100496]: net.lan: not allowed to be hotplugged
Dec 1 07:15:37 fw1 kernel: udevd[100499]: Error changing net interface name lan.14 to lanixa: File exists
Dec 1 07:15:37 fw1 kernel: udevd[100499]: could not rename interface '78' from 'lan.14' to 'lanixa': File exists |
Why am I seeing these udevd error messages?
Any suggestions?
Regards,
Vieri |
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Vieri
l33t
Joined: 18 Dec 2005
Posts: 877
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| Posted: Wed Dec 01, 2021 3:47 pm Post subject: |
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It seems that when I restart the NICs I get a kernel panic of some sort.
I haven't grabbed the full output on screen (I'll try again).
The only thing I could catch is a RIP after a kernel trace. The system then freezes.
[EDIT] xt_iface may be the culprit, but I'm unable to read the whole kernel trace. It might be tainting the kernel. Redirecting to file doesn't help. I guess I need to send the output to serial port. |
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