[ipxe-devel] IBDEV send queue full

Sigurd Kristian Brinch sigurd.k.brinch at uia.no
Tue Sep 30 15:07:01 UTC 2014

Hi Michael,

Yes it does.

I also tried to download the same files via tftp, and that works fine.


Sent from my iPhone

> On 30 Sep 2014, at 17:03, Michael Brown <mcb30 at ipxe.org> wrote:
>> On 30/09/14 07:54, Sigurd Kristian Brinch wrote:
>> I'm trying to use ipxe.iso to boot and install windows 8.1 on pcs with
>> only infiniband NICs.
>> It works fine with centos7 install, downloading pxelinux.0, initrd.img
>> and vmlinuz from tftp, but when I try to use http transfer for wimboot,
>> bcd, boot.sdi and boot.wim it starts of fine, but after a short while it
>> just stops downloading and nothing more happens.
>> When I compiled ipxe.iso with DEBUG=infiniband I got the following
>> message (Screenshot attached):
>> "IBDEV 0xd22d4 QPN 0x9c048 send queue full"
> That could be just a transient error indicating that iPXE has received several packets to which it needs to send responses, and doesn't have enough send work queue entries to send all of them, or it could indicate that the transmit datapath has locked up.
> Does the appearance of the "send queue full" message coincide exactly with the point at which download progress stops?
> Michael

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