Q: undionly.kpxe and sanhook to iSCSI target
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2016-12-02, 17:51
(This post was last modified: 2016-12-02 18:12 by Andromeda_x.)
Post: #1
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Q: undionly.kpxe and sanhook to iSCSI target
Hello,
I am attempting to gain access to iSCSI target and no success as of this moment and I am confused why it does not "attach" my target. System configuration: 1. iSCSI target located on Debian 7 machine (moon.coguar.com 192.168.64) where I can access/attach/mount iSCSI locally (what confirms that it works properly) (iSCSI target also added in initiators.allow file for test computer) 2. test computer (192.168.0.30) boots from network (DHCP serves undionly.kext) iSCSI configuration (Debian 7) Code: /etc/iet/iet.conf I boot test computer and get into IPXE then I issue following command Code: iPXE> login Snooping on the network traffic by tcpdump shows that computers talk to each other and I am not sure how to troubleshoot the communication Code: 08:17:33.203150 IP 192.168.0.30.23941 > moon.coguar.com.iscsi-target: Flags [S], seq 89673541, win 8192, options [nop,nop,TS val 1067792 ecr 0,mss 1460], length 0 I try to configure a system to net boot diskless test computer through DHCP into iPXE and then ipxe script kicks in to "sanhook" iSCSI target as 0x80 drive and after that to proceede with Windows installation. Currently script is disabled and I try to find out how "sanhook" works and I am puzzled why I get the message "Can not open SAN device: No such device (http://ipxe.org/2c0d603b) Code: #!ipxe Where is my mistake? What am I doing wrong? Andromeda X |
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2016-12-02, 19:21
Post: #2
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RE: Q: undionly.kpxe and sanhook to iSCSI target
Some suggestions to test and narrow down where the issue lies.
Have you tested without any auth? does the iscsi server logs tell you anything? you might want to capture a pcap file, and then disect it with wireshark instead. Use GitHub Discussions VRAM bin |
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2016-12-03, 08:24
Post: #3
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RE: Q: undionly.kpxe and sanhook to iSCSI target
Hi,
can somebody explain tcpdump output Code: 22:37:26.487649 IP (tos 0x0, ttl 64, id 8792, offset 0, flags [none], proto TCP (6), length 64) What is meaning of "(incorrect -> 0xa224)" in tcpdump output? Does it a symptom of a problem I have with ipxe+sanhook? It is very interesting situation as on other test computer iSCSI target can be attached without any issue (Authentication set to None)... Code: root@vega:~/iscsi# iscsiadm -m session Checking tcpdump in wireshark I see next "conversation" beween the computers iPXE test computer to iSCSI server (iSCSI protocol :: Login Command) Code: Key/Value Pairs iSCSI server replies to iPXE test computer (iSCSI protocol:: Login Response) Code: Status: Target not found (0x0203) NOTE: tcpdump -i eth0 host ipxe -w /tmp/tcpdump.cap Any thought on what is going on between iPXE test computer and iSCSI server? Why do the computers not agree to work together? Question: I was looking how to add an attachment (tcpdump capture of iSCSI negotiation) to this post and forum system gave me next message Code: Please correct the following errors before continuing: What is proper procedure to add a file of any type? Andromeda X |
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2016-12-03, 23:35
Post: #4
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RE: Q: undionly.kpxe and sanhook to iSCSI target
Hello,
ok, it seems that the problem is resolved and Windows 7 was successfully installed in combination of PXE->udnionly.kpxe->iSCSI->0x80->Windows 7 install -> Windows 7 boot So far it was found that Windows 7 runs reliably on following hardware MB: P5GCMX/1333 CPU: E8500 RAM: 2GB NOTE 1: Stock Windows 7 installation without any alternation of installation media with assistance of wimboot NOTE 2: Network utilization is between 5%-10% immediately after boot and latter goes to 85%-95% on 100Mbit network I did an attempt to install: Windows 10 -- installation gave a warning that it can not finish after "updates" step Windows 8.1 -- installation rebooted the computer and at following boot gave error (0xc00021a) NOTE 3: Windows 8.1 -- an attempt to boot without driver signature and safe boot both failed Andromeda X |
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