 21 Aug 2013, Konstantin Olchanski, Info, Documentation for ODBGet() & co, Javascript and AJAX functions.
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The bulk of the MIDAS AJAX and Javascript functions is now documented on the MIDAS Wiki:
https://midas.triumf.ca/MidasWiki/index.php/Mhttpd.js
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 22 Aug 2013, Konstantin Olchanski, Info, Documentation for ODBGet() & co, Javascript and AJAX functions.
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> The bulk of the MIDAS AJAX and Javascript functions is now documented on the MIDAS Wiki:
>
> https://midas.triumf.ca/MidasWiki/index.php/Mhttpd.js
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25 Sep 2013, Konstantin Olchanski, Info, Documentation for ODBGet() & co, Javascript and AJAX functions.
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> > The bulk of the MIDAS AJAX and Javascript functions is now documented on the MIDAS Wiki:
> >
> > https://midas.triumf.ca/MidasWiki/index.php/Mhttpd.js
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12 Nov 2010, Pierre-Andre Amaudruz, Release, Documentation
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The general Midas documentation has been rejuvenated by Suzannah Daviel through
a proof reading and with a collection of custom perl scripts to improve the
Doxygen capabilities for the document itself. In particular, a contents list and
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31 Oct 2003, Konstantin Olchanski, , Do not frob "/runinfo" in mhttpd.c
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I found where we tickle the race condition in db_create_record().
1) in mhttpd.c, every time we show the status page, we call
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01 Nov 2003, Stefan Ritt, , Do not frob
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> I found where we tickle the race condition in db_create_record().
>
> 1) in mhttpd.c, every time we show the status page, we call
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01 Nov 2003, Konstantin Olchanski, , Do not frob
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> > I found where we tickle the race condition in db_create_record().
> The reason for the db_create_record() is the following: Assume that we change
> the /runinfo structure...
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31 Oct 2003, Konstantin Olchanski, , Disable "tab"s in xemacs
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The default C indentation style in xemacs uses "tab" characters, violating
the MIDAS coding convention. To disable this misfeature in xemacs (emacs
too?), put this incantation in your .xemacs/custom.el file:
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07 Oct 2024, Amy Roberts, Bug Report, Difficulty running MIDAS on Rocky 9.4
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We're trying to install the SuperCDMS version of MIDAS on a Rocky 9.4 Virtual
Machine and are getting a persistent error when we run mserver. As far as I
know there are minimal changes between this and the MIDAS branch, but Ben Smith
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07 Oct 2024, Ben Smith, Bug Report, Difficulty running MIDAS on Rocky 9.4
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> We're trying to install the SuperCDMS version of MIDAS on a Rocky 9.4 Virtual
> Machine and are getting a persistent error when we run mserver. As far as I
> know there are minimal changes between this and the MIDAS branch, but Ben Smith
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07 Oct 2024, Konstantin Olchanski, Bug Report, Difficulty running MIDAS on Rocky 9.4
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> We're trying to install the SuperCDMS version of MIDAS on a Rocky 9.4 Virtual
> Machine and are getting a persistent error when we run mserver.
>
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08 Oct 2024, Mark Grimes, Bug Report, Difficulty running MIDAS on Rocky 9.4
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We run Midas with no problems on Rocky 9.4, although not in a virtual machine. We're very close to the head of `develop`.
I'm fairly sure I've seen an error like this before. I didn't pay it much attention because it was transitory and I was doing something weird at the time |
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08 Oct 2024, Amy Roberts, Bug Report, Difficulty running MIDAS on Rocky 9.4
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> > We're trying to install the SuperCDMS version of MIDAS on a Rocky 9.4 Virtual
> > Machine and are getting a persistent error when we run mserver. As far as I
> > know there are minimal changes between this and the MIDAS branch, but Ben Smith
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08 Oct 2024, Amy Roberts, Bug Report, Difficulty running MIDAS on Rocky 9.4
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> > We're trying to install the SuperCDMS version of MIDAS on a Rocky 9.4 Virtual
> > Machine and are getting a persistent error when we run mserver.
> >
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08 Oct 2024, Konstantin Olchanski, Bug Report, Difficulty running MIDAS on Rocky 9.4
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> I've uploaded the current core dump at: https://gitlab.com/det-lab/coredumps#.
I cannot read the core dump without the corresponding executable (and likely all it's shared libraries).
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08 Oct 2024, Konstantin Olchanski, Bug Report, Difficulty running MIDAS on Rocky 9.4
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I read these error messages. There is no ODB corruption. ODB semaphore is locked and all midas programs will fail, they will timeout trying to get the lock,
report the timeout, then it looks like a bug was introduced where instead of hard exit or abort() they attempt a clean shutdown which crashes from a recursive
call in db_lock_database(). Amy's
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08 Oct 2024, Konstantin Olchanski, Bug Report, Difficulty running MIDAS on Rocky 9.4
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> Basically I think Rocky 9.4 is a red herring.
This is what likely happened:
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08 Oct 2024, Konstantin Olchanski, Bug Report, Difficulty running MIDAS on Rocky 9.4
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> I read these error messages. There is no ODB corruption. ODB semaphore is locked and all midas programs will fail...
Recovery from this is:
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10 Oct 2024, Amy Roberts, Bug Report, Difficulty running MIDAS on Rocky 9.4
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> > I've uploaded the current core dump at: https://gitlab.com/det-lab/coredumps#.
>
> I cannot read the core dump without the corresponding executable (and likely all it's shared libraries).
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13 Oct 2024, Konstantin Olchanski, Bug Report, Difficulty running MIDAS on Rocky 9.4
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Thank you for the stack trace, I fixed the buglet that cause midas programs to crash twice,
once on failure to lock ODB, then call exit() -> atexit() handlers -> cm_check_connect() -> crash on ODB lock
failure is the cm_msg() codes.
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