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Re: [Xen-users] xl/qemu/tapdisk2 port issue

On Wed, Apr 9, 2014 at 1:57 AM, Ian Campbell <Ian.Campbell@xxxxxxxxxx> wrote:
On Tue, 2014-04-08 at 15:49 -0700, Saurabh Mishra wrote:
> Hi,
> We are seeing a very strange thing with the port we are using 33000.
> Our daemon hvmmgrd uses port 33000 but when hvmmgrd dies,
> xl/qemu-dm/tapdisk2 processes grab that port and we are not able to
> restart our daemon.

Are you using Remus? I can't see any other AF_INET uses in tapdisk2.


Hi Ian,

No -- we are not using Remus. Apparently, setting /proc/sys/net/ipv4/tcp_tw_reuse to '1' seems to keep the problem away.

We had seen xl, qemu-dm and tapdisk2 immediately jumping on the port which our daemon free'ed up because it died.


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