>>On Mon, Jul 10, 2017 at 02:51:34PM -0400, John Ferlan wrote:
>>
> >
>> On 06/29/2017 02:05 PM, ZhiPeng Lu wrote:
>> > nl_recv() returns the error "No buffer space available"
>> > when using virsh destroy domain with 240 or more
>> > passhthrough network interfaces.
>>
>> pass-through
>>
>> > The patch increases libnl sock receive buffer size to 1M,
>> > and nl_recv() doesn't return error when destroying domain
>> > with 512 network interfaces.
>> >
>> > Signed-off-by: ZhiPeng Lu <lu.zhipeng@zte.com.cn>
>> > ---
>> > src/util/virnetlink.c | 4 ++--
>> > 1 file changed, 2 insertions(+), 2 deletions(-)
>> >
>>
>> This feels like something that perhaps should be configurable - that is
>> some /etc/libvirt/libvirtd.conf variable; otherwise, we'll keep hitting
>> some conflated maximum based on the size of something.
>1 MB matches what systemed/udevd uses, so if we hit that limit, then the
>system as a whole is going to struggle already. So I don't think we need
>make it configurable.
----------1M is just an experience value, and I feel that setting up a configuration item
can accommodate the needs of different users.
In addition, this is only the netlink socket receive buffer size that will not affect the entire system.
The default value can still be set to 128K.