Date: Mon, 29 Jun 2009 22:24:39 -0800 From: Mel Flynn <mel.flynn+fbsd.questions@mailing.thruhere.net> To: freebsd-questions@freebsd.org Subject: Re: vde qemu write: No buffer space available Message-ID: <200906292224.39237.mel.flynn%2Bfbsd.questions@mailing.thruhere.net> In-Reply-To: <6201873e0906261104n575611bemeb3025d9e6e1ecb9@mail.gmail.com> References: <6201873e0906261104n575611bemeb3025d9e6e1ecb9@mail.gmail.com>
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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"). -- Mel
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