Alright, so I'm confused. You say your directory structure is /tftpd, but the tftp server is pointed to /tftpboot. I'm going to assume that you meant /tftpboot instead of /tftpd. I don't see any issues with the xinetd config for tftp. It says that the tftp server is running as root, which tells me that the problem is more likely a file system issue, and not a permission issue. But, to be thorough, do an 'ls -l /tftpboot'.
The log file does indeed show that there doesn't seem to be any issues accessing normal.mod. But, you've truncated the messages; is there an error accessing another file immediately following what you've posted? If nothing is showing up in the log files you may need to increase the verboseness of tftpd, or use a packet sniffer to find out what's really going on. I used pretty much the same command line you did. I don't believe there's an issue there though. Obviously the client is able to get the grub pxe boot file (xinu105.boot) and load it, or you wouldn't be getting the grub rescue prompt. It seems more like the files aren't complete in the /tftpboot/boot/grub/ directory. It would be helpful to have a more complete listing from the log file to diagnose the problem. Rob -----Original Message----- From: Cheng Cheng [mailto:[email protected]] Sent: Friday, February 11, 2011 1:48 PM To: #IS Department Cc: [email protected] Subject: Re: PXE failure, alway enter rescue mode Hi Rob, I run tftpd-hpa as daemon, the configuration file in /etc/xinetd.d/tftp is like that: ************************************** # TFTP configuration service tftp { socket_type = dgram protocol = udp port = 69 wait = yes user = root server = /usr/sbin/in.tftpd server_args = -s /tftpboot disable = no } ************************************** My directory structure is like that: ************************** /tftpd ----/boot --------/grub ------------*.mod ------------*.lst ----xinu105.boot *************************** When I try to use PXE to boot a machine, the machine enters rescue mode. ***************************************** Welcome to GRUB! error: file not found. Entering rescue mode... grub rescue> ****************************************** But the log in /var/log/daemon.log shows that: ************************************************************************ Feb 11 10:34:27 server tftpd[4924]: tftpd: trying to get file: xinu105.boot Feb 11 10:34:27 server tftpd[4924]: tftpd: serving file from /tftpboot Feb 11 10:34:27 server tftpd[4926]: tftpd: trying to get file: xinu105.boot Feb 11 10:34:27 server tftpd[4926]: tftpd: serving file from /tftpboot Feb 11 10:34:27 server tftpd[4928]: tftpd: trying to get file: /boot/grub/normal.mod Feb 11 10:34:27 server tftpd[4928]: tftpd: serving file from /tftpboot ************************************************************************* However, when I test the TFTP Server, I type (on the same machine that use PXE boot): ****************************************************************** $: tftp -v 192.168.2.50 -c get /boot/grub/normal.mod Connected to 192.168.2.50 (192.168.2.50), port 69 getting from 192.168.2.50:/boot/grub/normal.mod to normal.mod[netascii] Received 42263 bytes in 0.2 seconds [1545265 bit/s] ****************************************************************** And the log shows that: ************************************************************************** Feb 11 10:40:24 server tftpd[4980]: tftpd: trying to get file: /boot/grub/normal.mod Feb 11 10:40:24 server tftpd[4980]: tftpd: serving file from /tftpboot ************************************************************************** It seems grub can send the correct request to the server and the server responses correctly. But I do not know why grub still say "file not found". Can you send me your command to generate your pxe-image and a sample of your pxe-image? Thanks a lot! Cheng ----- Original Message ----- From: "#IS Department" <[email protected]> To: [email protected] Sent: Friday, February 11, 2011 12:29:29 PM Subject: RE: PXE failure, alway enter rescue mode Can you post the log and a list of your directory structure? If the prefix really is (pxe)/boot/grub then grub will look for (pxe)/boot/grub/normal.mod and there should be a request in the tftp log for /boot/grub/normal.mod which corresponds to <wherever_your_tftpboot_is>/boot/grub/normal.mod on the local filesystem. For Ubuntu 10.10 the default folder for tftp-hpa is /var/lib/tftpboot, so all your grub files should be under /var/lib/tftpboot/boot/grub/. Based on what you said, it's looking for /normal.mod which would correspond to /var/lib/tftpboot/normal.mod, which I'm guessing isn't there, hence the error message. I don't believe that it would have gone into rescue mode if it had actually been able to access normal.mod. The default configuration for tftp-hpa under Ubuntu 10.10 should be sufficient to get pxe booting set up and running. Depending on what your end goal is you may have to tweak the settings from there. The permissions need to be at least read (and execute for directories) for whatever user tftp is running as. For Ubuntu 10.10 the default is to run as tftp, so make sure the tftp user has sufficient permissions. I'm not using grub 1.99rc1. My distro was using grub legacy, so I tried compiling grub 1.98 from source first. It worked, so there was no reason for me to run the release candidate. Rob -----Original Message----- From: Cheng Cheng [mailto:[email protected]] Sent: Thursday, February 10, 2011 10:00 PM To: #IS Department Subject: Re: PXE failure, alway enter rescue mode Hi Rob, I really really appreciate your reply. -:) I use ubuntu 10.10 and tftpd-hpa as my TFTP server, and I turned on the logging. And the log show that grub has already download the module it needs(normal). But I found the file name grub used is strange. There is a "/" before the actual file name. For example, if I want to load normal.mod, the log will shows: trying to get /normal.mod, which will lead to fail. I do not know how to configure the TFTP to make both /normal.mod and normal.mod work. Can you send me your configuration file for TFTP, along with the commands that you set up the privilege of "tftpboot" folder? And, do you currently use 1.99rc1? Thanks a lot! Looking forward your rely. Regards, Cheng ----- Original Message ----- From: "#IS Department" <[email protected]> To: [email protected] Sent: Thursday, February 10, 2011 7:03:25 PM Subject: RE: PXE failure, alway enter rescue mode The prefix looks fine to me (I used an identical command line for my working setup). My guess is the tftp server directory isn't set up correctly. I suggest you turn on logging (if your tftp server supports it) to find out exactly what file is being looked for, and compare that to the actual directory structure. If your tftp server doesn't support logging, then use a packet sniffer to see why the specified file is not found. Rob -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Cheng Cheng Sent: Friday, February 04, 2011 8:43 PM To: [email protected] Subject: PXE failure, alway enter rescue mode Hi all, I want to use PXE to boot GRUB. And I already have grub1.99rc1 on my computer. The command I used to produce the pxe image is: grub-mkimage --fromat=i386-pc-pxe --prefix='(pxe)/boot/grub' --output=pxe.boot pxe pxecmd But every time, I can only enter rescue mode. The error shows "file not found" I think this is because the prefix has some problem, and grub cannot resolve the path on tftp. Can anyone tell me how to correctly set the prefix? I would really appreciate it. Cheng _______________________________________________ Help-grub mailing list [email protected] http://lists.gnu.org/mailman/listinfo/help-grub _______________________________________________ Help-grub mailing list [email protected] http://lists.gnu.org/mailman/listinfo/help-grub _______________________________________________ Help-grub mailing list [email protected] http://lists.gnu.org/mailman/listinfo/help-grub
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