Hi,
> Your client is receiving the status message back from the first RRD ("0
> Successfully...").
> Then, for some reason, it's echoing this back to the server before the next
> command.
> You can see it on the read() for FD 6.
>
> 1401/19: 327 57 30 write(0x6, "0 Successfully flushed
> /opt/rrd/ganglia/Management/shango/load_one.rrd.\n\0", 0x48) =
> 72 0
> 1401/19: 394 29 12 read(0x6, "0 Successfully flushed
> /opt/rrd/ganglia/Management/shango/load_one.rrd.\nflush
> /opt/rrd/ganglia/Management/shango/proc_run.rrd\na\320\0", 0x2000) = 126 0
> 1401/19: 452 46 27 write(0x6, "-1 Unknown command:
> 0\n\0", 0x16) = 22 0
>
> Could you try tracing on your client to see if it's actually sending the
> results back to the server as a command? Then we'll know which side to look
> on.
Great debuging idea. The client (rrdtool) is the problem:
19442/1:
resolvepath("/opt/rrd/ganglia/Management/__SummaryInfo__/load_one.rrd\0",
0xFFBFBA90, 0x400) = 56 0
19442/1: fstat64(0x3, 0xFFBFB7F0, 0x1) = 0 0
19442/1: brk(0x62918) = 0 0
19442/1: brk(0x64918) = 0 0
19442/1: fstat64(0x3, 0xFFBFB698, 0xD9D64) = 0 0
19442/1: ioctl(0x3, 0x5401, 0xFFBFB77C) = -1 Err#22
19442/1: write(0x3, "flush
/opt/rrd/ganglia/Management/__SummaryInfo__/load_one.rrd\n\0", 0x3F)
= 63 0
19442/1: read(0x3, "0 Successfully flushed
/opt/rrd/ganglia/Management/__SummaryInfo__/load_one.rrd.\n\0", 0x2000)
= 81 0
19442/1: open("/opt/rrd/ganglia/Management/__SummaryInfo__/load_one.rrd\0",
0x0, 0x1B6) = 5 0
19442/1: fstat(0x5, 0xFFBFCD08, 0x0) = 0 0
19442/1: mmap(0x0, 0x5C18, 0x1) = -31850496 0
19442/1: memcntl(0xFE1A0000, 0x5C18, 0x4) = 0 0
19442/1: memcntl(0xFE1A0000, 0x78, 0x4) = 0 0
19442/1: memcntl(0xFE1A0000, 0x78, 0x4) = 0 0
19442/1: memcntl(0xFE1A0000, 0xF0, 0x4) = 0 0
19442/1: memcntl(0xFE1A0000, 0x230, 0x4) = 0 0
19442/1: memcntl(0xFE1A0000, 0x8, 0x4) = 0 0
19442/1: memcntl(0xFE1A0000, 0x5C18, 0x1) = 0 0
19442/1: munmap(0xFE1A0000, 0x5C18) = 0 0
19442/1: close(0x5) = 0 0
19442/1:
resolvepath("/opt/rrd/ganglia/Management/__SummaryInfo__/proc_run.rrd\0",
0xFFBFBA90, 0x400) = 56 0
19442/1: write(0x3, "0 Successfully flushed
/opt/rrd/ganglia/Management/__SummaryInfo__/load_one.rrd.\n\0", 0x51)
= 81 0
19442/1: write(0x3, "flush
/opt/rrd/ganglia/Management/__SummaryInfo__/proc_run.rrd\n\0", 0x3F)
= 63 0
19442/1: read(0x3, "-1 Unknown command:
0\n/Management/__SummaryInfo__/proc_run.rrd\no__/load_one.rrd.\n\0", 0x2000)
= 22 0
19442/1: fstat64(0x2, 0xFFBFE780, 0xFE5303BC) = 0 0
19442/1: write(0x2, "ERROR: \0", 0x7) = 7 0
19442/1: write(0x2, "rrdc_flush
(/opt/rrd/ganglia/Management/__SummaryInfo__/proc_run.rrd) failed with status
-1.\0", 0x5C) = 92 0
19442/1: write(0x2, "\n\0", 0x1) = 1 0
I guess the bug is in rrd_client.c or rrd_graph.c, but I can't see why this
would break on Solaris and not Linux.
Anything else I can test?
Many thanks,
Peter.
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