 23 Sep 2006, Konstantin Olchanski, Bug Report, mhttpd elog corruption via double-edit
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Aparently the mhttpd elog will corrupt the elog files if two (or more?) elog entries are being edited at the
same time. K.O. |
 24 Sep 2006, Stefan Ritt, Bug Report, mhttpd elog corruption via double-edit
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[Quote="K.O.]Aparently the mhttpd elog will corrupt the elog files if two (or more\?) elog entries are being edited at the same time. K.O.[/quote]
That's strange. Since mhttpd is single threaded, there should not be any multi-thread/process conflict there, since the elog files cannot be written simultaneously |
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27 Sep 2006, Konstantin Olchanski, Bug Report, mhttpd elog corruption via double-edit
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[quote="Stefan Ritt"][Quote="K.O.]Aparently the mhttpd elog will corrupt the
elog files if two (or more\?) elog entries are being edited at the same time.
K.O.[/quote]
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28 Sep 2006, Stefan Ritt, Bug Report, mhttpd elog corruption via double-edit
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> I do not know how to "properly" fix this bug without changing the indexing
> scheme to something similar to what is used by elogd- message numbers instead of
> file indices. In the existing scheme, message editing also breaks URLs shown in
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03 Jul 2019, Lukas Gerritzen, Bug Report, mhttpd crashes when including nonexistent script in msequencer
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Hi,
the subject line describes the project already
Suppose you have a file foo.msl. Somewhere in the file, you have the line
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10 Jul 2019, Stefan Ritt, Bug Report, mhttpd crashes when including nonexistent script in msequencer
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The bug has been fixed. It was actually in the mxml library. So you have to go to the midas/mxml
subdirectory and update that one via "git pull origin master".
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11 Aug 2003, Konstantin Olchanski, , mhttpd crash on corrupted ODB /RunInfo
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Invalid values of ODB /RunInfo/State cause mhttpd crash in
show_status_page() because of an out of bounds access to the array of state
names. Suggest this fix: remove array of state names, use existing ladder of
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10 Oct 2003, Konstantin Olchanski, , mhttpd crash on corrupted ODB /RunInfo
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There was no feedback. This code has been commited. K.O.
> Invalid values of ODB /RunInfo/State cause mhttpd crash in
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06 Sep 2021, Andreas Suter, Forum, mhttpd crash
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midas version used: midas-2019-05-cxx-1461-g906be8b
I find in the systemd log every couple of days/weeks the following error message related to the mhttpd:
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06 Sep 2021, Konstantin Olchanski, Forum, mhttpd crash
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> [mhttpd,ERROR] [mhttpd.cxx:18886:on_work_complete,ERROR] Should not send response to request from socket 28 to socket 26, abort!
> Can anybody hint me what is going wrong here?
> The bad thing on the crash is, that sometimes it is leading to a "chain-reaction" killing multiple midas frontends, which essentially stop the experiment.
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07 Sep 2021, Andreas Suter, Forum, mhttpd crash
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Dear Konstantin,
thanks for the prompt response, this helps a lot!
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17 Sep 2021, Stefan Ritt, Forum, mhttpd crash 
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To limit the impact of the numerous crashes of mhttpd, I installed the monit tool at MEG at PSI
(https://en.wikipedia.org/wiki/Monit). It monitors mhttpd, and if it cannot connect to it for a certain
time, it kills the process and restarts it. This covers endless loops, simple crashes (caused by the
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04 Jun 2009, bazinski, Bug Report, mhttpd command line experiment specifying
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Hi
Not sure how the rest of you specify mhttpd to work with multiple experiments on
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05 Jun 2009, Stefan Ritt, Bug Report, mhttpd command line experiment specifying
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> Not sure how the rest of you specify mhttpd to work with multiple experiments on
> one machine, but it would seem not the same as me ;-)
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05 Jun 2009, bazinski, Bug Report, mhttpd command line experiment specifying
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Hi
> > Not sure how the rest of you specify mhttpd to work with multiple experiments on
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05 Jun 2009, Konstantin Olchanski, Bug Report, mhttpd command line experiment specifying
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> I guess you have to do some debugging there. Note that "detached" transitions have
> been implemented recently by Konstantin, so maybe your problem is related to that.
> In this case Konstantin should check what's wrong.
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18 Jun 2009, Konstantin Olchanski, Bug Report, mhttpd command line experiment specifying
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> > I guess you have to do some debugging there. Note that "detached" transitions have
> > been implemented recently by Konstantin, so maybe your problem is related to that.
> > In this case Konstantin should check what's wrong.
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21 May 2007, Konstantin Olchanski, Info, mhttpd changes to use /History/Tags data
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I am slowly commiting the changes to the history code. This installement adds
code to mhttpd to use the /History/Tags data (to be) generated by the mlogger.
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23 Mar 2022, Konstantin Olchanski, Bug Fix, mhttpd bug fixed
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the mhttpd bug should be fixed now (branch feature/buffer_mutex).
simplest way to reproduce:
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24 Mar 2022, Stefan Ritt, Bug Fix, mhttpd bug fixed
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> 1st wget stops (by ctrl-C), socket is closed, mongoose frees it's mg_connection object
> (corresponding worker is still labouring, hmm... actually sleeping, and now has a stale nc pointer)
>
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