 17 Nov 2017, Konstantin Olchanski, Bug Report, bug in init of hv class driver
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Hi, Frederick, this is my personal opinion on the slow controls hv classes, I have
used them a couple of times and I found them full of little buglets like this,
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21 Nov 2017, Konstantin Olchanski, Bug Report, bug in init of hv class driver
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>
> The original idea behind the hv driver is that all voltages in the ODB and the class driver are
> positive. If you have a negative power supply, then the voltage is inverted at the device
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 21 Nov 2017, Konstantin Olchanski, Info, MIDAS support on el5?
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It has been reported that the current midas release candidate does not build on el5 linux (SL/RHEL/CentOS-5).
According to Red Hat, el5 is end-of-life, last SL 5 (SL5.11) was done in 2014, so this linux is very old. Also as it happens, I do not have access to any |
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21 Nov 2017, Konstantin Olchanski, Release, Pending release of midas
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We are readying a new release of midas and it is almost here except for a few buglets on the new html status page.
The current release candidate branch is "feature/midas-2017-10" and if you have problems with the older versions
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11 Jan 2018, Konstantin Olchanski, Bug Report, mhttpd - custom page - RHEL/Fedora
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> [mhttpd,ERROR] [mhttpd.cxx:563:rread,ERROR] Cannot read file '/root', read of
> 4096 returned -1, errno 21 (Is a directory)
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20 Jul 2018, Konstantin Olchanski, Info, ROOT I/O workshop notable
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The ROOT I/O workshop was held on June 20th at CERN. A few things of interest in MIDAS land:
- LZ4 is now used as default compression (replacing gzip-1)
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20 Jul 2018, Konstantin Olchanski, Forum, strings in sqlite
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> Invalid tag 0 'Comment' in event 21 'Run Parameters': cannot do history for
> TID_STRING data, sorry!
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20 Jul 2018, Konstantin Olchanski, Forum, ODB full
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Concurrence.
Normally, MIDAS data events are saved to ODB (via RO_ODB into /eq/xxx/variables) to make them go into the midas history (/eq/xxx/common/history > 0).
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23 Jul 2018, Konstantin Olchanski, Forum, Question about distributing event builder function on remote PC
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> I'm going to develop MIDAS DAQ for COMET experiment.
> I'm thinking to distribute the load of event building to different PCs.
> I attach a schematics of one of the examples of the design.
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28 Aug 2018, Konstantin Olchanski, Bug Report, Deleting Links in ODB via mhttpd
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> Asume you have a variable foo and a link bar -> foo. When you go to the ODB in
> mhttpd, click "Delete" and select bar, it actually deletes foo. bar stays,
> stating "<cannot resolve link>". Trying the same in odbedit with rm gives the
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28 Aug 2018, Konstantin Olchanski, Forum, Problems with virtual history events
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Hi, what you try should have worked. Perhaps your symlink is wrong and should say "/External/..." (with a leading slash). The "links period" would have
worked same as equipment/common/history period - as a rate limiter.
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28 Aug 2018, Konstantin Olchanski, Forum, Int64 datatype
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> I would like to store the address of 1-Wire temperature sensors in a device
> driver. However, the supportet data types (as definded around
> include/midas.h:311) do not foresee a type large enough.
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28 Aug 2018, Konstantin Olchanski, Bug Report, mserver problem
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> Hi. We've just updated our midas installation to the newest version, and we now see repeated errors from the
> mserver in messages. Mostly we see
>
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29 Aug 2018, Konstantin Olchanski, Forum, midas forum mail relay changed to smtp.triumf.ca
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Per changes at TRIUMF, the MIDAS forum mail relay was changed from trmail.triumf.ca to
smtp.triumf.ca. K.O. |
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22 Nov 2018, Konstantin Olchanski, Info, status of self-signed https certificates
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I just happened to check the current situation with self-signed https certificates as implemented in mhttpd.
(To remember, the powers-that-be are pushing for universal use of https for all web access. The https
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03 Dec 2018, Konstantin Olchanski, Info, status of self-signed https certificates
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> > In the mean time, we continue to recommend that mhttpd should be used behind a password protected https proxy (i.e. apache
> > httpd, etc).
>
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05 Dec 2018, Konstantin Olchanski, Info, Partial refactoring of ODB code
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The current ODB code has several structural problems and I think I now figured out how to straighten them out.
Here is the problems:
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18 Dec 2018, Konstantin Olchanski, Info, mxml update
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the mxml library was updated to make it thread-safe.
https://bitbucket.org/tmidas/mxml/src/master/
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26 Dec 2018, Konstantin Olchanski, Bug Report, mhttpd - custom page - RHEL/Fedora
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> > [mhttpd,ERROR] [mhttpd.cxx:563:rread,ERROR] Cannot read file '/root', read of
> > 4096 returned -1, errno 21 (Is a directory)
>
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26 Dec 2018, Konstantin Olchanski, Bug Report, mhttpd - custom page - RHEL/Fedora
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> I implemented that fix. Thank you to Andreas. Creating "Custom" directory from the web now does
> not have that problem any more.
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