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iPXE discussion forum / iPXE user forums / General v / UEFI PXE http boot failure

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UEFI PXE http boot failure
2016-10-31, 16:53
Post: #1
sneutralino Offline
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Joined: 2016-Oct
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UEFI PXE http boot failure
Hello,

As a disclaimer I should probably state that I am quite new to iPXE, I have been educating myself by reading the documentation and from 3rd party sources, but I could not find any relevant information for the problem I will be describing below, that's why I am posting here today.

So I am trying to boot a set of linux binaries located on an HTTP server, but from time to time my system hangs after the final 'boot' command.

I am using iPXE version aa11f, and my boot script looks like this:

Code:
#!ipxe

# Global variables used by all other iPXE scripts
chain --autofree boot.ipxe.cfg

# Location of the kernel and initramfs
set image-url ${http-server}

# name of the kernel and initramfs
set kernel bzImage
set initramfs initrd

# Parameters to be passed to the kernel
set kernel-options console=ttyS0,115200 console=tty0

# iPXE boot commands
kernel ${image-url}/${kernel} initrd=${initramfs} ${kernel-options}
initrd ${image-url}/${initramfs}

prompt Press any key to continue

echo boot ${kernel}
boot ${kernel}

I compiled ipxe.efi with the following command:
Code:
make bin-x86_64-efi/ipxe.efi EMBED=chainload.ipxe DEBUG=tcp:1

I noticed the following:
  • If the 'boot' command is issued without delay after the 'initrd' command, the system freezes

    Quote:>>Start PXE over IPv4, Press [ESC] to EXIT...
    Station IP address is 10.0.107.120

    Server IP address is 10.0.4.183
    NBP filename is /tftpboot/ipxe/ipxe.efi
    NBP filesize is 921024 Bytes
    Downloading NBP file...
    iPXE initialising devices...ok




    iPXE 1.0.0+ (aa11f) -- Open Source Network Boot Firmware -- http://ipxe.org
    Features: DNS HTTP TFTP EFI Menu
    Could not open net0: Input/output error (http://ipxe.org/1d6a4698)
    Configuring (net1 00:80:a2:13:76:a1)...... ok
    00:80:a2:13:76:a1
    net1
    http://bucls1:8000/config/00-80-a2-13-76-a1.ipxe...TCP 0x91c2caa8 allocated
    TCP 0x91c2caa8 transitioned from CLOSED to SYN_SENT
    TCP 0x91c2caa8 bound to port 1025
    TCP 0x91c2caa8 timer fired in SYN_SENT for 2d75941b..2d75941b 00000000
    TCP 0x91c2caa8 using timestamps, SACK, TX window x1, RX window x1
    TCP 0x91c2caa8 transitioned from SYN_SENT to ESTABLISHED
    TCP 0x91c2caa8 transitioned from ESTABLISHED to FIN_WAIT_1
    ok
    boot.ipxe.cfg...TCP 0x91c2caa8 transitioned from FIN_WAIT_1 to CLOSING/LAST_ACK
    TCP 0x91c2caa8 transitioned from CLOSING/LAST_ACK to TIME_WAIT
    TCP 0x91c2c208 allocated
    TCP 0x91c2c208 transitioned from CLOSED to SYN_SENT
    TCP 0x91c2c208 bound to port 42658
    TCP 0x91c2c208 timer fired in SYN_SENT for 68b3bd60..68b3bd60 00000000
    TCP 0x91c2c208 using timestamps, SACK, TX window x1, RX window x1
    TCP 0x91c2c208 transitioned from SYN_SENT to ESTABLISHED
    TCP 0x91c2c208 transitioned from ESTABLISHED to FIN_WAIT_1
    TCP 0x91c2c208 transitioned from FIN_WAIT_1 to CLOSING/LAST_ACK
    ok
    http://buc/ipxe/bzImage...TCP 0x91c2c208 transitioned from CLOSING/LAST_ACK to TIME_WAIT
    TCP 0x91c2de28 allocated
    TCP 0x91c2de28 transitioned from CLOSED to SYN_SENT
    TCP 0x91c2de28 bound to port 59162
    TCP 0x91c2de28 timer fired in SYN_SENT for 6cbca57f..6cbca57f 00000000
    TCP 0x91c2de28 using timestamps, SACK, TX window x1, RX window x1
    TCP 0x91c2de28 transitioned from SYN_SENT to ESTABLISHED
    ok
    http://buc/ipxe/initrd... ok
    wait...
    boot bzImage
  • if I wait ~5 seconds after the 'initrd', 2 debug messages pop-up (They seems related to the download of bzImage. No logs are ever displayed for the download of initrd):

    Quote:TCP 0x91c2ce08 transitioned from ESTABLISHED to CLOSING/LAST_ACK
    TCP 0x91c2ce08 transitioned from CLOSING/LAST_ACK to TIME_WAIT

    If I issue the 'boot' command after those, the systems boots OK:

    Quote:>>Start PXE over IPv4, Press [ESC] to EXIT...
    Station IP address is 10.0.107.120

    Server IP address is 10.0.4.183
    NBP filename is /tftpboot/ipxe/ipxe.efi
    NBP filesize is 921024 Bytes
    Downloading NBP file...
    iPXE initialising devices...ok




    iPXE 1.0.0+ (aa11f) -- Open Source Network Boot Firmware -- http://ipxe.org
    Features: DNS HTTP TFTP EFI Menu
    Could not open net0: Input/output error (http://ipxe.org/1d6a4698)
    Configuring (net1 00:80:a2:13:76:a1)...... ok
    00:80:a2:13:76:a1
    net1
    http://bucls1:8000/config/00-80-a2-13-76-a1.ipxe...TCP 0x91c2c308 allocated
    TCP 0x91c2c308 transitioned from CLOSED to SYN_SENT
    TCP 0x91c2c308 bound to port 1025
    TCP 0x91c2c308 timer fired in SYN_SENT for 2d75941b..2d75941b 00000000
    TCP 0x91c2c308 using timestamps, SACK, TX window x1, RX window x1
    TCP 0x91c2c308 transitioned from SYN_SENT to ESTABLISHED
    TCP 0x91c2c308 transitioned from ESTABLISHED to FIN_WAIT_1
    ok
    boot.ipxe.cfg...TCP 0x91c2c308 transitioned from FIN_WAIT_1 to CLOSING/LAST_ACK
    TCP 0x91c2c308 transitioned from CLOSING/LAST_ACK to TIME_WAIT
    TCP 0x91c2c8c8 allocated
    TCP 0x91c2c8c8 transitioned from CLOSED to SYN_SENT
    TCP 0x91c2c8c8 bound to port 42658
    TCP 0x91c2c8c8 timer fired in SYN_SENT for 68b3bd60..68b3bd60 00000000
    TCP 0x91c2c8c8 using timestamps, SACK, TX window x1, RX window x1
    TCP 0x91c2c8c8 transitioned from SYN_SENT to ESTABLISHED
    TCP 0x91c2c8c8 transitioned from ESTABLISHED to FIN_WAIT_1
    TCP 0x91c2c8c8 transitioned from FIN_WAIT_1 to CLOSING/LAST_ACK
    ok
    http://buc/ipxe/bzImage...TCP 0x91c2c8c8 transitioned from CLOSING/LAST_ACK to TIME_WAIT
    TCP 0x91c2ce08 allocated
    TCP 0x91c2ce08 transitioned from CLOSED to SYN_SENT
    TCP 0x91c2ce08 bound to port 59162
    TCP 0x91c2ce08 timer fired in SYN_SENT for 6cbca57f..6cbca57f 00000000
    TCP 0x91c2ce08 using timestamps, SACK, TX window x1, RX window x1
    TCP 0x91c2ce08 transitioned from SYN_SENT to ESTABLISHED
    ok
    http://buc/ipxe/initrd... ok
    wait...
    Press any key to continue
    TCP 0x91c2ce08 transitioned from ESTABLISHED to CLOSING/LAST_ACK
    TCP 0x91c2ce08 transitioned from CLOSING/LAST_ACK to TIME_WAIT
    boot bzImage

    [ 0.000000] Initializing cgroup subsys cpuset
    [ 0.000000] Initializing cgroup subsys cpu
    [ 0.000000] Initializing cgroup subsys cpuacct
    [ 0.000000] Linux version 4.1.33-yocto-standard (damien@ansld2.ces.ch) (gcc version 5.2.0 (GCC) ) #1 SMP PREEMPT Mon Oct 31 00:44:11 CET 2016
    [ 0.000000] Command line: bzImage initrd=initrd console=ttyS0,115200 console=tty0
    [ 0.000000] KERNEL supported cpus:
    [ 0.000000] Intel GenuineIntel
    [...]
  • Sometime the system boots out of the box, without any the need of an additional sleep, in such case I get:

    Quote:iPXE 1.0.0+ (aa11f) -- Open Source Network Boot Firmware -- http://ipxe.org
    Features: DNS HTTP TFTP EFI Menu
    Could not open net0: Input/output error (http://ipxe.org/1d6a4698)
    Configuring (net1 00:80:a2:13:76:a1)...... ok
    00:80:a2:13:76:a1
    net1
    http://bucls1:8000/config/00-80-a2-13-76-a1.ipxe...TCP 0x91c2c308 allocated
    TCP 0x91c2c308 transitioned from CLOSED to SYN_SENT
    TCP 0x91c2c308 bound to port 1025
    TCP 0x91c2c308 timer fired in SYN_SENT for 2d75941b..2d75941b 00000000
    TCP 0x91c2c308 using timestamps, SACK, TX window x1, RX window x1
    TCP 0x91c2c308 transitioned from SYN_SENT to ESTABLISHED
    TCP 0x91c2c308 transitioned from ESTABLISHED to FIN_WAIT_1
    TCP 0x91c2c308 transitioned from FIN_WAIT_1 to CLOSING/LAST_ACK
    ok
    boot.ipxe.cfg...TCP 0x91c2c308 transitioned from CLOSING/LAST_ACK to TIME_WAIT
    TCP 0x91c2c8c8 allocated
    TCP 0x91c2c8c8 transitioned from CLOSED to SYN_SENT
    TCP 0x91c2c8c8 bound to port 42658
    TCP 0x91c2c8c8 timer fired in SYN_SENT for 68b3bd60..68b3bd60 00000000
    TCP 0x91c2c8c8 using timestamps, SACK, TX window x1, RX window x1
    TCP 0x91c2c8c8 transitioned from SYN_SENT to ESTABLISHED
    TCP 0x91c2c8c8 transitioned from ESTABLISHED to FIN_WAIT_1
    TCP 0x91c2c8c8 transitioned from FIN_WAIT_1 to CLOSING/LAST_ACK
    ok
    http://ansld3/ipxe/bzImage...TCP 0x91c2c8c8 transitioned from CLOSING/LAST_ACK to TIME_WAIT
    TCP 0x91c2de28 allocated
    TCP 0x91c2de28 transitioned from CLOSED to SYN_SENT
    TCP 0x91c2de28 bound to port 59162
    TCP 0x91c2de28 timer fired in SYN_SENT for 6cbca57f..6cbca57f 00000000
    TCP 0x91c2de28 using timestamps, SACK, TX window x1, RX window x1
    TCP 0x91c2de28 transitioned from SYN_SENT to ESTABLISHED
    TCP 0x91c2de28 transitioned from ESTABLISHED to FIN_WAIT_1
    TCP 0x91c2de28 transitioned from FIN_WAIT_1 to CLOSING/LAST_ACK
    ok
    http://ansld3/ipxe/initrd...TCP 0x91c2de28 transitioned from CLOSING/LAST_ACK to TIME_WAIT
    TCP 0x91c2d048 allocated
    TCP 0x91c2d048 transitioned from CLOSED to SYN_SENT
    TCP 0x91c2d048 bound to port 28039
    TCP 0x91c2d048 timer fired in SYN_SENT for 37e502df..37e502df 00000000
    TCP 0x91c2d048 using timestamps, SACK, TX window x1, RX window x1
    TCP 0x91c2d048 transitioned from SYN_SENT to ESTABLISHED
    56%TCP 0x91c2d048 transitioned from ESTABLISHED to FIN_WAIT_1
    TCP 0x91c2d048 transitioned from FIN_WAIT_1 to CLOSING/LAST_ACK ok
    wait...
    boot bzImage


    [ 0.000000] Initializing cgroup subsys cpuset
    [ 0.000000] Initializing cgroup subsys cpu
    [...]


From here I am not sure where to go.
I would bet that my network infrastructure is most probably guilty of those random late transition from CLOSING/LAST_ACK to TIME_WAIT, but there is nothing I can do on that side.
Is there a way to put more debug messages to understand where iPXE freezes more exactly and why ? Any idea would be much appreciated !

Not sure it is related, but for the record I should mention that I also suffer from time to time of that stalling http download problem that was already reported in a few other posts.
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UEFI PXE http boot failure - sneutralino - 2016-10-31 16:53



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