[Udpcast] udp-cast sending too much data
alain at knaff.lu
Thu Feb 12 17:04:46 CET 2009
Scott Mikolyski wrote:
> The past few days, I've been fighting to get udpcast to send an
> uncorrupted disk image to my lab computers. The hard disks are 160GB
> (160000000000) with six partitions (a mix of ntfs and ext2/3/swap).
> During the multicast, the sender reports some time outs. After a few
> hours and 160GB later, the progress indicator says it has run out of
> disk space on the receivers. Not all of the partitions exist on the
> cloned disks with a lot of free disk space either labelled empty or as
> an unknown partition.
> I'm using the prebuilt pxe linux kernel (126.96.36.199) with a cast-o-matic
> initrd file.
> Are the casting time outs related to the data corruption? And if the
> disks are identical how can I be running out of space? What can I do to
> get a clean copy of my disk across. I've been staying up way too long
> trying to figure this out. Any help is greatly appreciated.
> Udpcast mailing list
> Udpcast at udpcast.linux.lu
You're probably running into the seek bug present in some Linux kernels.
The problem is being fixed (Linux patches take a really long time to get
through the chain into a released kernel...), so in the meantime I added a
workaround for it to udpcast.
You can download this version from the udpcast site as usual.
More information about the Udpcast