November 2003 - Udpcast

problem: file is too large
by Richard Sikora 25 Nov '03

25 Nov '03

Hi everybody, I have problem with udp-receiver, it is unable to store files larger than 2GB. I have read older post and found some work around (udp-receiver > image.gz) but this did not work either. my config is: CPU P4 2,4GHz, RAM 512 DDR, HDD WD 120GB, NIC RTL8139 (8139too driver), i run debian woody orignaly (2.2) kernel but i upgraded to 2.4.18-686, i use udpcast 20030831, partition where i store image i big enough and has reiserfs i administer small lan, about 15 winxp boxes any hints? thanx, der3k --

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Re: [Udpcast] problem: file is too large
by Guus der Kinderen 23 Nov '03

23 Nov '03

I used a similar set at the sender-side ( $ udp-sender --pipe "dd if=/dev/hda1/" ), but I don't see why the way how you send stuff affects the maximum storage size on the receivers end. Can anyone think of something? - Guus At 19:44 21-11-2003, Dylan Martin wrote: >Oops. Sorry about the empty email... Achem! > >Anyway, I was going to say, we had the same problem, but we fixed it by >piping through dd. Our problem seemed to be on the sender though... >here's what we did... > >udp-sender --nokbd --max-bitrate 80m --pipe "dd if=/home/image/disk.img" > >The nokbd and max-bitrate are for unrelated problems... > >Maybe some simler dd trickery would help your problem. > >-Dylan > > > Hi everybody, > > I have problem with udp-receiver, it is unable to store files > > larger than 2GB. > > I have read older post and found some work around (udp-receiver > image.gz) > > but this did not work either. > > > > my config is: > > CPU P4 2,4GHz, RAM 512 DDR, HDD WD 120GB, NIC RTL8139 (8139too driver), > > i run debian woody orignaly (2.2) kernel but i upgraded to 2.4.18-686, > > i use udpcast 20030831, > > partition where i store image i big enough and has reiserfs > > > > i administer small lan, about 15 winxp boxes > > > > any hints? > > > > thanx, > > der3k > > > > > >_______________________________________________ >Udpcast mailing list >Udpcast(a)udpcast.linux.lu >http://udpcast.linux.lu/mailman/listinfo/udpcast

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Video on Lan
by Rodrigo Angelo Figueiredo 17 Nov '03

17 Nov '03

A Help, Please! I need to distribute an Image to 40 clients. The resolution of this image is 1560x1024, and the Max refresh is 1 frame per second. This Image is in my pc screen, so if I distribute my screen to the clients, I´ll distribute this Image. This is possible with the software Udpcast?? The clients can be Win2000?? How can I see this image in the clients?? Rodrigo

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exit code 141
by Brian Elliott Finley 06 Nov '03

06 Nov '03

First let me say that udpcast is a great tool. I use it in SystemImager as a multicast transport option, and it works quite well. I do have one conundrum, however, in that I'm trying to do a --pipe 'tar -x' on a busybox system, and regardless of the exit status of the --pipe program (tar in this case), I get an exit status of 141 from udp-receiver. The files, however, are untarred successfully. If I issue the same commands on a non-busy box system, things work fine. If I receive the stream to a file, --file /tmp/out, udp-receiver exits with a zero. A statically compiled udp-receiver exhibits the same behavior. This is with udpcast-20011231. I have even applied the patch below, which produces appropriate exit codes when run on a non-busybox system. Help! Thanks, -Brian diff -urN udpcast-20011231sis2.orig/udpr-negotiate.c udpcast-20011231sis2/udpr-negotiate.c --- udpcast-20011231sis2.orig/udpr-negotiate.c 2001-12-30 18:07:02.000000000 -0600 +++ udpcast-20011231sis2/udpr-negotiate.c 2003-11-06 10:05:27.000000000 -0600 @@ -1,3 +1,9 @@ +/* + * 2003.11.06 Brian E. Finley <finley(a)mcs.anl.gov> + * - retrieve status returned by waitForProcess as "pipeStatus", then + * exit with status of failed pipe program if status is non-zero. + */ + #include <fcntl.h> #include <unistd.h> #include <errno.h> @@ -297,6 +303,8 @@ { struct fifo fifo; void *returnValue; + int pipeStatus; + receiver_stats_t stats = allocReadStats(origOutFile); initFifo(&fifo, net_config->blockSize); @@ -315,7 +323,11 @@ /* if we have a pipe, now wait for that too */ if(pipePid) { - waitForProcess(pipePid, "Pipe"); + pipeStatus = waitForProcess(pipePid, "Pipe"); + if(pipeStatus != 0) { + fsync(origOutFile); + exit(pipeStatus); + } } fsync(origOutFile); displayReceiverStats(stats); -- --------------------------------------------------------- Brian Elliott Finley Argonne, MCS Division Phone: 630.631.6621 http://thefinleys.com GPG: 3FF8 D096 0E0C D3F3 29B7 6518 D20B 1931 10F8 EE52 ---------------------------------------------------------

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