Frage zu Netboot

So wie es aussieht wurde das Image garnicht übergeben. Sonst würde da am Ende irgendwas mit INITTAR, RAMDISK und tmpfs mounted stehen.

Versuch mal in tftpboot ein Verzeichnis anzulegen ("default" zB), da den kernel und rootfs.img reinkopieren. Bei mir sieht das ganze dann so aus:

default vdrclient
prompt 1
timeout 150
display pxelinux.cfg/boot.msg
f1 pxelinux.cfg/boot.msg


label vdrclient
kernel default/kernel
append initrd=default/rootfs.img root=/dev/tmpfs

Und hier nochmal die Verzeichnisse:
eis # ls -l /tftpboot/default
-rwxr--r-- 1 root root 1419120 Dec 14 2005 kernel
-rwxr--r-- 1 root root 1663230 Dec 12 22:50 rootfs.img

eis # ls -l /tftpboot/pxelinux.cfg
-rw-r--r-- 1 root root 879 Dec 12 23:49 boot.msg
-rwxr--r-- 1 root root 277 Dec 12 23:49 default

Bei mir bootet der ganz normal mit diesen Einstellungen.

Gruß,
Sevo

Hallo,
versuch mal den tftpd-hpa so anzupassen:

tftp  dgram  udp  wait  root  /usr/sbin/in.tftpd /usr/sbin/in.tftpd -vvv -s /var/lib/tftpboot -r blksize -r timeout

und danach

echo 1 > /proc/sys/net/ipv4/ip_no_pmtu_disc

eingeben.

Zitat

Quelle: CD-Net-Install-HOWTO Anmerkung: sehr ausführlich geschriebenes HOWTO !
Maximum packet count
Einige - vor allem ältere - PXE-Implementierungen im ROM der NICs können nicht beliebig viele Pakete senden; das Limit liegt oft bei 32k Paketen.
Um ohne Adaption der Implementierung ein Image, das größer ist, als die maximal übertragbare Datei-Größe, übertragen zu können, benötigt man die Kommandozeilen-Option "-r". Leider ist diese Option nicht in jeder tftpd-Implementierung vorhanden.

Zitat

Quelle: syslinux.zytor.com
{ PXE stacks based on Intel's 0.99 series code }
A lot of older PXE stacks are based on Intel LANDesk Service Agent II, versions 0.99, which were released by Intel as "PXE PDK v2.x", despite being what can best be described as alpha quality. These stacks have numerous problems and can trivially be crashed.

If you can, upgrade your firmware.

Unfortunately, firmware upgrade to a recent source base are frequently unavailable for these cards, especially motherboard cards where the PXE stack is integrated with the system BIOS. If so, these stacks can usually be made to work with the following workarounds:

* Disable path MTU discovery on the boot servers. Some versions of these stacks are known to crash if the boot server supports path MTU discovery on UDP. For a Linux server, path MTU discovery can be disabled by setting the sysctl entry net.ipv4.ip_no_pmtu_disc to 1:

echo 1 > /proc/sys/net/ipv4/ip_no_pmtu_disc

Note that that may cause bad performance for other services which may be running on the boot server, especially if they have to talk over WAN links. DHCP or TFTP services should generally not be affected.
* Disable the blksize TFTP option on your TFTP server. Some version of these stacks are known to request the blksize option and fail to complete the initial bootstrap transfer if the option is granted by the server (i.e. they got what they asked for.) For tftp-hpa, specify -r blksize to disable blksize, for atftp specify --no-blksize. For other TFTP servers, see your TFTP server documentation. Note that disabling blksize may have a significant impact on the performance of all TFTP clients. Other services are not affected.

Alles anzeigen

Gruß MAK

Biddeschön:

eis # cat /etc/xinetd.d/tftp
service tftp
{
  server = /usr/sbin/in.tftpd
  server_args = -s  /tftpboot
  socket_type = dgram
  protocol = udp
  wait = yes
  user = root
  disable = no
}

eis # cat /etc/dhcpd.conf
# general settings
authoritative;
allow bootp;


default-lease-time 3600;
max-lease-time 7200;


# dynamic dns updates
ddns-update-style interim;
ddns-updates on;
deny client-updates;
update-static-leases true;
ddns-ttl 1200;
ddns-domainname "xxx";
ddns-rev-domainname "in-addr.arpa.";


# update this zone (rev-updates below)
zone xxx.
{
    primary localhost;
}


# pxe and etherboot
option space pxelinux;
option pxelinux.magic        code 208 = string;
option pxelinux.configfile   code 209 = text;
option pxelinux.pathprefix   code 210 = text;
option pxelinux.reboottime   code 211 = unsigned integer 32;


option etherboot-magic       code 128 = text;


# eth0 (X.X.X.X)
subnet X.X.X.X netmask X.X.X.X
{
    range X.X.X.X X.X.X.X;
    option subnet-mask X.X.X.X;
    option broadcast-address X.X.X.X;
    option routers X.X.X.X;
    option domain-name-servers X.X.X.X;
    # if client does not send a hostname, generate it
    ddns-hostname = pick-first-value (
        option fqdn.hostname, option host-name,
        concat ("dynamic", binary-to-ascii (16, 8, "", leased-address)
     ) ) ;
    option host-name = config-option server.ddns-hostname;
    option domain-name "xxx";


    option netbios-dd-server X.X.X.X;
    option netbios-node-type 8;


    filename "pxelinux.0";
    next-server X.X.X.X;
}
zone X.X.X.in-addr.arpa.
{
    primary localhost;
}


# clients with static ip adresses
group
{
    use-host-decl-names on;
    default-lease-time 86400;
    max-lease-time 604800;
...
}

Gruß,
Sevo