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xen-users
Re: [Xen-users] Changing MTU of vif
Fischer, Anna wrote:
You can, for example, put "set -x" at the top of the
/etc/xen/scripts/vif-common.sh script and then you get the output of that in
/var/log/xen-hotplug.log.
This was actually the first thing I tried but I put set +x instead of -x
which apparently doesn't work. :) Thanks for the tip! I have since
corrected that and now get the following in the xen-hotplug.log:
+ add_to_bridge stbr0 vif28.1
+ local bridge=stbr0
+ local dev=vif28.1
+ '[' -e /sys/class/net/stbr0/brif/vif28.1 ']'
+ brctl addif stbr0 vif28.1
+ ip link set vif28.1 up
+ '[' stbr0 = stbr0 ']'
+ ip link set vif28.1 mtu 9000
SIOCSIFMTU: Invalid argument
++ sigerr
++ fatal '/etc/xen/scripts/vif-bridge failed; error detected.'
So we are in the add_to_bridge function and my little test for checking
that this is the vif being added to my SAN bridge works and then we try
to set the mtu to 9000 and get "Invalid argument". Strange thing is that
this command works from the command line right after I normally set up a
domain so I'm not sure what the problem is. I should be able to set the
mtu on the vif and then the mtu on the bridge.
While looking through the scripts I noticed that the bridge is taken
down momentarily while setting everything up so that would explain why
the mtu on the bridge keeps getting reset to 1500 every time I create a
domain.
Entire output is here in case anyone is interested:
http://pastebin.ca/958683
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