Any changes in Multicast code between 2.4.20 and 2.4.22/23 ? -> New Info
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The kernels are 2.4.22 and 2.4.23 (now .24) with some NFS patches. In the case of 2.4.24 those are:
01-posix_race
02-fix_commit
03-fix_osx
04-fix_lockd3
06-fix_unlink
07_seekdir
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from http://www.fys.uio.no/~trondmy/src/Linux-2.4.x/2.4.23-rc1 None of those looks like it does something to multicasts. In the worst case I could try to run with plain 2.4.22/23, but that would have to ait
until
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Wednesday.
OK, here are some more hints on the problem. To rule out the NFS
pathces and pinpoint the time of problem introduction I tested my setup with 2.4.21 vanilla and 2.4.22 vanilla. With 2.4.21 vanilla everything works as before/expected. With 2.4.22 vanilla the Ganglia multicasts are not seen in the system.
To rule out further causes, I rebuilt the 2.4.21 version of tg3.o
(V1.5) for the 2.4.22 kernel (tg3-V1.6). Unfortunatelly the problem did not go away, which point into the direction of the pretty large igmp/multicast changes introduced with 2.4.22. Debugging tg3 would have been easier ...
As before - I am pretty keen on getting this fixed. So any hints are
appreciated.
Just to avoid the obvious - the kernel-configuration for my 2.4.21 and
2.4.22 builds are almost identical (modulo symbols that got added/removed to/from 2.4.22). The user-space is identical.
Cheers
Martin
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Martin Knoblauch
email: k n o b i AT knobisoft DOT de www: http://www.knobisoft.de