 27 Nov 2007, Stefan Ritt, Info, ODB links to array elements implemented
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In revision 4090 I implemented ODB links to individual array elements. Now you
can have for example:
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07 Jan 2008, Stefan Ritt, Info, Roll-back for history sytem added
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The midas history system always had the problem that the database can get
corrupted if the disk gets full where the history records (*.hst & *.idx) are
stored. This can happen if a history event can only be written partially on the
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 05 Feb 2008, Stefan Ritt, Forum, analyzer crashes at high rates
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> I'm using midas to read data from a waveform digitizer at event rates of
> 10-30kHz. To accomplish this the digitizer is read via Block transfers and the
> raw data put into a single MIDAS event. Thus a MIDAS event could contain upto
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05 Feb 2008, Stefan Ritt, Info, Implementation of relative paths in mhttpd
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A major change was made to mhttpd, changing all internal URLs to relative paths.
This allows proxy access to mhttpd via an apache server for example, which might
be needed to securely access an experiment from outside the lab through a
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06 Feb 2008, Stefan Ritt, Forum, rpc timeout, related to event_size and watch dog? need help
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Most likely you changed the maximal event size in midas.h, but you did not re-compile [B]all[/B] programs. The maximal event size goes into the size of
the shared memory buffer, so all participating programs have to have the same setting, especially the mserver program. So do the following:
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06 Feb 2008, Stefan Ritt, Forum, rpc timeout, related to event_size and watch dog? need help
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First of all, I would appreciate if you do not post your entry ten times. Each time you edit it, you produce an email notification going to everybody, so
people might get annoyed to receive too many emails from you. Think what you want to write and then post once.
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13 Feb 2008, Stefan Ritt, Info, Roll-back for history sytem added
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> But to make things more interesting we had another history outage this week - we
> happen to write history files to an NFS server (not recommened! do not do this!) and
> when the NFS server had a glitch, history files got corrupted - because during the
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14 Feb 2008, Stefan Ritt, Info, mhttpd history display updates
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You misspelled one ODB entry:
Line 9014:
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19 Feb 2008, Stefan Ritt, Bug Fix, "make install" error on MacOS 10.4.7, svn 3366
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> I forgot to mention that, the following (and similar) lines:
> install -v -D -m 755 $$file $(SYSBIN_DIR)/`basename $$file` ; \
> are changed into
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21 Feb 2008, Stefan Ritt, Bug Report, mhttpd safari 3.0.4 redirect problem
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> /* start command */
> if (*getparam("Start")) {
> /* for NT: close reply socket before starting subprocess */
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07 Mar 2008, Stefan Ritt, Bug Report, array overflows and other bugs
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> I have just compiled MIDAS svn 4132 on a fresh SuSE 10.3 x86_64 system and gcc
> found a bunch of bugs, I guess.
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09 Mar 2008, Stefan Ritt, Suggestion, New Makefile for building MIDAS
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> I rewrote the Makefile for MIDAS in order to make it tidy. I tested it on my box
> and it works here.
> 1. The full file is seperated to several parts
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10 Mar 2008, Stefan Ritt, Suggestion, RFC- ACLs for midas rpc, mserver, mhttpd access
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> When accepting connection from a remote host, the remote IP address is converted to a
> hostname using gethostbyaddr(). If ODB directory "/experiment/security/mhttpd hosts",
> exists, access is permitted if there is an entry for the this hostname. "localhost" is
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10 Mar 2008, Stefan Ritt, Suggestion, New Makefile for building MIDAS
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> I rewrote the Makefile for MIDAS in order to make it tidy. I tested it on my box
> and it works here.
> 1. The full file is seperated to several parts
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10 Mar 2008, Stefan Ritt, Suggestion, RFC- ACLs for midas rpc, mserver, mhttpd access
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> I was going to bring this up later, but since mhttpd does not pass security audits, I believe
> the only way it should be run in the modern computing environement is behind
> a password-protected SSL proxy.
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10 Mar 2008, Stefan Ritt, Bug Report, array overflows and other bugs
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There were some trivial and some non-trivial issues. Glad the compiled picked up on
this!
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11 Mar 2008, Stefan Ritt, Suggestion, "Makefile-by-EL" updated
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The linking of mhttpd misses a "-lm":
cc -g -O3 -Wall -Wuninitialized -DINCLUDE_FTPLIB -D_LARGEFILE64_SOURCE -DOS_LINUX
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25 Mar 2008, Stefan Ritt, Info, Per-variable history implementation in the mlogger
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Before approving the code, two conditions have to be fulfilled:
1) The code has to work on PSI experiments
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02 Apr 2008, Stefan Ritt, Info, add "const" attributes to db_xxx() functions
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> Now that we use more and more C++, lack of "const" attribute on most midas functions is causing some
> problems. I am now ready to commit changes to midas.h and odb.c that add the const attributes to ODB
> access functions db_xxx(), i.e.
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16 Jun 2008, Stefan Ritt, Bug Fix, "Missing event" problem fixed in front-end framework
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Since the very beginning midas had the problem that the last event of a run was
sometimes missing in the data. While for most experiments this is not an issue,
it starts to hurt on experiments using event building (front-end 1 and front-end
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