ipxe http download hangs
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2011-07-12, 20:06
Post: #1
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ipxe http download hangs
Hello,
I've been on IRC trying to solve this problem but I think it's easier if I post it here : I'm using ipxe to boot several linux machines simultaneously (currently 2). Those machines are rebooted many times a day. Each linux has to download an initrd file which is around 500mb in size, over a 10/100 mb ethernet switch. One time out of 5, the downloads hangs in the middle at various percentages and linux never boots. I have a http debug build and the last thing it shows is : [0m[33mHTTP 0x16eb4 start of data My webserver is apache, centos 5.3. The logs show nothing (no error but no success either) A wireshark capture shows that the transfer stops at exactly the same moment for the 2 linux machines that are http downloading with ipxe. There are a few TCP retransmits - over 20 seconds, then nothing at all. Trying to narrow down the issue I made another interesting discovery : when the download is taking place from ipxe, I start a wget infinite loop of the same file on another linux machine; then the download from ipxe stalls. It only resumes when I stop wget, then completes. I could observe that on a bare metal PC but also in a virtual machine. Could it be that ipxe http does not work well in a congested environment ? That ipxe and wget (or 2 instances of ipxe) complete with each other, and ipxe looses ? I've also tested many builds of ipxe, going as far as oct 2010. Same results observed. I am now using tftp for the initrd file, which is really slow. I'd really appreciate some help. Thank you |
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Messages In This Thread |
ipxe http download hangs - nicolas_o - 2011-07-12 20:06
RE: ipxe http download hangs - tetsu09 - 2012-07-13, 12:27
RE: ipxe http download hangs - robinsmidsrod - 2012-07-22, 18:51
RE: ipxe http download hangs - nicolas_o - 2015-03-08, 00:37
RE: ipxe http download hangs - robinsmidsrod - 2015-03-09, 10:52
RE: ipxe http download hangs - benbp - 2015-10-29, 22:55
RE: ipxe http download hangs - mimiko - 2015-11-11, 12:13
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