Re: [webmin-devel] [Webmin] Webalizer hangs

[Jamie C. <jca...@we...>]

Martin Mewes wrote:
> Howdy,
> 
> Am Mittwoch, 24. September 2003 15:08 schrieb Hugo Cornelis:
> 
> 
>>>If there is anything I could try again for a more
>>>debugging output,
>>>please let me know.
>>
>>I don't know anything about the webalizer module, so
>>perhaps my answer is a bit naive : what I always do if
>>a process seems to hang, is to use strace to attach to
>>the process.
>>
>>e.g. if index.cgi (PID==12) seems to hang, strace -p
>>12.  Perhaps using the '-s' option can be usefull to
>>read pending error messages in a process buffer.  Of
>>course this works only if you own the processes ie. if
>>you are root in this case.
> 
> 
> Thanks for this ...
> 
> Well, here are the results from the "strace"-jury, to whom it may 
> concern:
> 
> I initiated Webalizer-Stats with "Run on selected schedule .."
> 
> and "strace -p 28911" as root gives ...
> 
> write(1, "Do you want to retry the same ed"..., 36) = 36
> read(0, "", 4096)                       = 0
> write(2, "Enter Y or N\n", 13)          = 13
> write(1, "Do you want to retry the same ed"..., 36) = 36
> read(0, "", 4096)                       = 0
> write(2, "Enter Y or N\n", 13)          = 13
> write(1, "Do you want to retry the same ed"..., 36) = 36
> read(0, "", 4096)                       = 0

That does explain quite a lot actually.. When you select the new 'Run 
on selected schedule' option, Webmin uses a special schedule format in 
  the crontab file like @hourly or @monthly, which is only supported 
by Vixie-cron. However, your system doesn't seem to be using 
Vixie-cron, and so is choking on that schedule format .. And clearly 
the module needs to handle this kind of failure better, instead of 
letting cron go into an infinite loop!

Which Linux distribution are you running there? I had assumed that all 
  Linux variants came with Vixie-cron, except Trustix.

  - Jamie