Udpcast June 2007

udpcast@udpcast.linux.lu

6 participants
8 discussions

by Devin Bayer

This patch applies to 20070602 and has a few fixes needed for OS X 10.4. * removes 3 harmless warnings in fifo.c, log.c, statistics.c, and util.c * drops the fatal error when getting the broadcast address fails for an interface, since this is normal for the loopback, which is checked before the ethernet. This causes udpcast to always die unless the -- interface option is used. * use the alternative IP_MULTICAST_IF method, same as for Cygwin. The comment in the code made it sound like Cygwin was out of the norm, but it's Linux that's at ends with OpenBSD, Apple OS X, Solaris, Cygwin, etc... Thanks, Devin Bayer

15 years, 11 months

Serious Bug - block size too small

by Devin Bayer

Hello. I have been using udpcast (version 2006-09-15) successfully until last week when I decided to upgrade. I first tried 2007-06-02, but that didn't work. So I tried 2007-03-26 and that failed in the same way. When I use either of these newer images I see this message on the receiver: ... sending go signal lzop: <stdin>: block size too small -- recompile lzop bytes= 848 848 (43.00 Mbps) and then the transfer stops. The program doesn't end, but the sender just continues to timeout. Any help would be appreciated. It must have happened between Sept, 2006 and March, 2007. I am using the prebuilt images from the CD- ROM, booted via PXE, as my receiver. My sender is Mac OS 10.4 PowerPC and I tried the Sept '06 and most recent versions of the program. I tried lzop 1.0 and lzop 1.02rc2, both of which work with the older receiver. Thanks, Devin Bayer

15 years, 11 months

Castomatic - Initrd (for PXE)...

by MAECHLER Cyrille

Hi everybody, I have a problem with the images castomatic for PXE. When I download the PXE image already prepared on the site, there is no problem but if I want to create my own preconfigured image with castomatic, the image will load but an error occures and we can see the following error message : File "/lib/modules/2.6.21.3udpcast/modules.pcimap" not found (No such file or directory) I tried 3 images : - Preconfigured for a Dell optiplex 740 (NIC => tg3, Sata => sata_nv) - Preconfigured for a Dell optiplex GX620 (NIC => tg3, Sata => ata_piix) - Preconfigured (NIC => Autodetected, Sata =>Autodetected) Please note that my DHCP server is on a Windows Server and that my TFTP server is on another Windows Server. I don't think the problem come from my infrastructure. The problem should come during the creation of the image by castomatic. Is someone already encounter this issue ? Thanks a lot for any response, -- Cyrille MAECHLER IT Manager European School Luxembourg 23, Boulevard Konrad Adenauer L-1115 Luxembourg Phone : +352 432082-408 Fax : +352 432082-344 cmaechler(a)euroschool.lu ------------------------------------------------------------------------ - ########################################### European School Luxembourg 1: This message has been scanned by F-Secure Anti-Virus for Microsoft Exchange. For more information, connect to http://www.f-secure.com/

15 years, 11 months

clone at once several partitions

by Dieter Kroemer

Hi, is there a possibility to create an online udpcast image to clone (for example) at once /dev/hda1, /dev/hda3 and /dev/hda4. Kind regards Dieter

15 years, 11 months

transferrate

by Dieter Kroemer

Hi, I've got in my school 40 pcs - amd 4200+ 1GB Ram 160 GB Samsung IDE-harddisk and Intel pro 1000GT - Gbit-switch If I clone a receiver and the sender directly with a crossovercable I've got a transferrate of nearly 500 Mbit/s. If I clone at once 4 pcs with the Gbit-switch I've got a transferrate of 350Mbit/s. If I clone more then 5 pcs at once the transferrate falls down to 70 - 90 Mbit/s. Well that's okay and udpcast is fantastic but if I could clone 20 pcs also with 500 Mbit/s it would great. Does anyone knows the reason for the reduced transferrate - whichever could be the bottleneck? Kind regards Dieter

15 years, 11 months

Help needed...

by Alex Richards

Hi; Hopefully you can shed some light on the situation I am encountering. I have a class set of 30 Dell Optiplex 745 workstations - and the drivers on the Web Configurator (primarily the tg3 driver) did not work with the Broadcom NetXtreme Gigabit network adapter in these workstations. So I built a new set of disks using a Feisty Fawn live cd and its Kernel to get the appropriate driver support. I am now able to get udpcast working to send a sysprepped windows xp pro image, ntfs - 80gb sata drive(ata-piix). I am now having the issue where machines are randomly failing with the newly casted image. I've been using lzop compression and have received a few errors on the sender - but the my main concern is that random machines get a disk read error (obviously wont boot) and some get NTLDR Missing error messages. This is very odd as it isn't always the same machines that get this error after a cast. I can restore a ghost image to those machines individually - they then initialize just fine. I've also tried to create disks using the Fedora Core 7 live cd with the same results. I am attaching a the very rough documentation I made as a reminder to myself on how I create the udpcast disks. Udpcast is great and works flawlessly on my older Dell labs here in the college! The issue has stumped me for about a month as I've tried different techniques on and off. Your insight is greatly appreciated!! Alex Richards IT Specialist, Information Technology Services saultcollege.ca <http://www.saultcollege.ca/> E-mail: alex.richards(a)saultcollege.ca <mailto:alex.richards@saultcollege.ca>

15 years, 12 months

[PATCH] fixes parallel make & make DESTDIR=/tmp/xxx install

by Daniel Black

make -j2 was failing because it started a make each for udp-receiver.1 and udp-sender.1. make DESTDIR=/tmp install was failing because the DESTDIR glue wasn't included. This is a standard part of autoconf and really helps when staging an install. Finally updated the gentoo packages associated with udpcast. http://packages.gentoo.org/packages/?category=net-misc;name=udpcast Keep up the great work, Cheers, -- Daniel Black <dragonheart(a)gentoo.org> Gentoo Foundation

16 years

Troubles with busybox v1.5.0 (2007-03-28 14:34:43)

by Stephane Boireau (Animateur TICE Bernay/Pont-Audemer)

Hi, It seems, a trouble happens using busybox v1.5.0 (2007-03-28 14:34:43). I build an iso using: # udpcast-20070323-1.i586.rpm # udpcast-mkimage-20070328-1.i586.rpm # kernel-udpcast-2.6.20.4-1.i586.rpm And I get strange things: # date Fri May 4 07:50:34 UTC 2007 # That's OK. But: # date > /tmp/date.txt # cat /tmp/date.txt # # A=`echo world` # echo $A world # That's OK. But: # A=`date` # echo $A # No completion working. Is it possible to correct this? Thanks! -- Stephane Boireau Animateur TICE Bernay/Pont-Audemer

16 years

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Udpcast June 2007