vde qemu write: No buffer space available
mel.flynn+fbsd.questions at mailing.thruhere.net
Tue Jun 30 06:24:41 UTC 2009
On Friday 26 June 2009 10:04:13 Adam Vande More wrote:
> I'm having issues with high network throughput with vde and qemu. There
> are two qemu vm's each running debian lenny and they are configured for
> drbd. The vm's work fine until drbd is started then the networking fails.
> The only message I get(on the host side) is
> write: No buffer space available
It can be a driver issue, but the error message is somewhat misleading as it
can be the result of an ill-configured firewall rule. Typically this happens
when no state exists for the outgoing connection.
> which is echoed to console, and nothing appears in the logs. I believe
> this to be an issue with vde, but I can't be certain because I can't seem
> to find any way to turn on more extensive logging. Anyone have an idea how
> to resolve this?
You should check netstat -m to make sure there are mbufs available and if
there is check your firewall. If all seems ok, try freebsd-net list for any
known issues, since you didn't get any "me too's" here. You may want to
specify a bit more info, like pciconf -lv for the vde device, vmstat -i at the
time of the errors, ifconfig vde0 output and any firewall information
(including "I don't have one" or "error persists if firewall is disabled").
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