I have tried to translate the algorithm in the shell script to C++ 
without changing it too much. The C++ daemon ought to perform the same 
job as the old shell script. The program will check the size of the log 
file once every 15 seconds, and if the log file is larger than 5 MB the 
log file will be rotated. So the size of the file, when rotated, will be 
at least 5 MB and at most 5 MB + the amount of log data that MDS can 
produce during 15 seconds. Do you mean that the observed log sizes fall 
outside this range? I don't know how much log data can be produced by 
MDS during 15 seconds - it depends on how fast the disk is and how 
heavily MDS is logging.

In any case I indend to replace the log rotation as part of ticket 
[#2015]. The intention is that osaftransportd will be extended so that 
it also writes the log records to disk. It will then be able to rotate 
the log file at the very moment the size exceeds the limit.

/ Anders Widell

On 10/04/2016 12:16 PM, A V Mahesh wrote:
> Hi Anders Widell,
>
> I observed different/inconsistent  rotation size of mds.log.old ( this 
> may be an existing issue )
>
> The preferred option will be :
>
> 1) While restating node mv existing mds.log to mds.log.old irrelevant 
> of its size
>
> 2) Then start count the max rotation size , form then on-words do a 
> rotation for fixed size
>
> 3) in future we can do this as restartable  process (  wcan add this 
> to [#2091] ) ,
>
> ================================================================
>
> SC-1:/var/log/opensaf # ls -l
> total 38880
> -rw-r--r-- 1 root root   498138 Oct  4 15:24 mds.log
> -rw-r--r-- 1 root root 39252568 Oct  4 15:24 mds.log.old
> -rw-r--r-- 1 root root      288 Oct  4 15:22 nid.log
> drwxr-xr-x 2 root root     4096 Oct  4 15:22 saflog
>
> SC-1:/var/log/opensaf # ls -l
> total 17968
> -rw-r--r-- 1 root root  3849350 Oct  4 15:25 mds.log
> -rw-r--r-- 1 root root 14516200 Oct  4 15:25 mds.log.old
> -rw-r--r-- 1 root root      288 Oct  4 15:22 nid.log
> drwxr-xr-x 2 root root     4096 Oct  4 15:22 saflog
>
>
> PL-3:/var/log/opensaf # ls -l
> total 9140
> -rw-r--r-- 1 root root 1581973 Oct  4 15:31 mds.log
> -rw-r--r-- 1 root root 7752082 Oct  4 15:31 mds.log.old
> -rw-r--r-- 1 root root     107 Oct  4 15:22 nid.log
>
> SC-2:/var/log/opensaf # ls -l
> total 52224
> -rw-r--r-- 1 root root 38914405 Oct  4 15:33 mds.log
> -rw-r--r-- 1 root root 13688936 Oct  4 15:33 mds.log.old
> -rw-r--r-- 1 root root      288 Oct  4 15:22 nid.log
> drwxr-xr-x 2 root root     4096 Oct  4 15:26 saflog
> ==========================================================
>
> -AVM
>
>
> On 9/22/2016 4:47 PM, Anders Widell wrote:
>> Summary: dtm: Convert transport monitor script to a daemon [#2035] V2
>> Review request for Trac Ticket(s): 2035
>> Peer Reviewer(s): Mahesh
>> Pull request to:
>> Affected branch(es): default(5.2)
>> Development branch: default
>>
>> --------------------------------
>> Impacted area       Impact y/n
>> --------------------------------
>>   Docs                    n
>>   Build system            n
>>   RPM/packaging           n
>>   Configuration files     n
>>   Startup scripts         n
>>   SAF services            n
>>   OpenSAF services        y
>>   Core libraries          n
>>   Samples                 n
>>   Tests                   n
>>   Other                   n
>>
>>
>> Comments (indicate scope for each "y" above):
>> ---------------------------------------------
>> Changes in V2 patch:
>>
>> * Updated opensaf.spec.in and opensafd.in according to review comments
>> * Fixed shellcheck warnings in osaf-transport.in
>>
>> changeset 47c52cb831e52ac6ba2bcd55f442a610f9c44642
>> Author:    Anders Widell <anders.wid...@ericsson.com>
>> Date:    Thu, 22 Sep 2016 13:08:46 +0200
>>
>>     dtm: Convert transport monitor script to a daemon [#2035]
>>
>>     Convert the osaf-transport-monitor shell script into a daemon called
>>     osaftransportd. The functionality of this new daemon is (should 
>> be) exactly
>>     the same as the functionality of the shell script that it replaces.
>>
>>
>> Complete diffstat:
>> ------------------
>> configure.ac |    3 ++-
>> opensaf.spec.in |    4 ++--
>> osaf/services/infrastructure/dtms/Makefile.am |    3 +--
>> osaf/services/infrastructure/dtms/scripts/Makefile.am |    3 +--
>> osaf/services/infrastructure/dtms/scripts/osaf-transport-monitor.in 
>> |   82 
>> ----------------------------------------------------------------------------------
>> osaf/services/infrastructure/dtms/scripts/osaf-transport.in |   45 
>> +++++++++++++++++++++++++++++++--------------
>> osaf/services/infrastructure/dtms/transport/Makefile.am |   41 
>> +++++++++++++++++++++++++++++++++++++++++
>> osaf/services/infrastructure/dtms/transport/main.cc |   52 
>> ++++++++++++++++++++++++++++++++++++++++++++++++++++
>> osaf/services/infrastructure/dtms/transport/tests/Makefile.am |   45 
>> +++++++++++++++++++++++++++++++++++++++++++++
>> osaf/services/infrastructure/dtms/transport/tests/mock_logtrace.cc 
>> |   34 ++++++++++++++++++++++++++++++++++
>> osaf/services/infrastructure/dtms/transport/tests/mock_logtrace.h |   
>> 23 +++++++++++++++++++++++
>> osaf/services/infrastructure/dtms/transport/tests/mock_osaf_poll.cc 
>> |   26 ++++++++++++++++++++++++++
>> osaf/services/infrastructure/dtms/transport/tests/mock_osaf_poll.h 
>> |   38 ++++++++++++++++++++++++++++++++++++++
>> osaf/services/infrastructure/dtms/transport/tests/transport_monitor_test.cc 
>> |  109 
>> +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
>> osaf/services/infrastructure/dtms/transport/transport_monitor.cc |   
>> 95 
>> +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
>> osaf/services/infrastructure/dtms/transport/transport_monitor.h |   
>> 92 
>> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
>> osaf/services/infrastructure/nid/scripts/opensafd.in |    6 +-----
>>   17 files changed, 593 insertions(+), 108 deletions(-)
>>
>>
>> Testing Commands:
>> -----------------
>> make check
>>
>>
>> Testing, Expected Results:
>> --------------------------
>> * No errors detected by the unit tests.
>> * MDS log rotation and dtm supervision should work as before.
>>
>> Conditions of Submission:
>> -------------------------
>> Ack from reviewer(s)
>>
>>
>> Arch      Built     Started    Linux distro
>> -------------------------------------------
>> mips        n          n
>> mips64      n          n
>> x86         n          n
>> x86_64      y          y
>> powerpc     n          n
>> powerpc64   n          n
>>
>>
>> Reviewer Checklist:
>> -------------------
>> [Submitters: make sure that your review doesn't trigger any checkmarks!]
>>
>>
>> Your checkin has not passed review because (see checked entries):
>>
>> ___ Your RR template is generally incomplete; it has too many blank 
>> entries
>>      that need proper data filled in.
>>
>> ___ You have failed to nominate the proper persons for review and push.
>>
>> ___ Your patches do not have proper short+long header
>>
>> ___ You have grammar/spelling in your header that is unacceptable.
>>
>> ___ You have exceeded a sensible line length in your 
>> headers/comments/text.
>>
>> ___ You have failed to put in a proper Trac Ticket # into your commits.
>>
>> ___ You have incorrectly put/left internal data in your comments/files
>>      (i.e. internal bug tracking tool IDs, product names etc)
>>
>> ___ You have not given any evidence of testing beyond basic build tests.
>>      Demonstrate some level of runtime or other sanity testing.
>>
>> ___ You have ^M present in some of your files. These have to be removed.
>>
>> ___ You have needlessly changed whitespace or added whitespace crimes
>>      like trailing spaces, or spaces before tabs.
>>
>> ___ You have mixed real technical changes with whitespace and other
>>      cosmetic code cleanup changes. These have to be separate commits.
>>
>> ___ You need to refactor your submission into logical chunks; there is
>>      too much content into a single commit.
>>
>> ___ You have extraneous garbage in your review (merge commits etc)
>>
>> ___ You have giant attachments which should never have been sent;
>>      Instead you should place your content in a public tree to be 
>> pulled.
>>
>> ___ You have too many commits attached to an e-mail; resend as threaded
>>      commits, or place in a public tree for a pull.
>>
>> ___ You have resent this content multiple times without a clear 
>> indication
>>      of what has changed between each re-send.
>>
>> ___ You have failed to adequately and individually address all of the
>>      comments and change requests that were proposed in the initial 
>> review.
>>
>> ___ You have a misconfigured ~/.hgrc file (i.e. username, email etc)
>>
>> ___ Your computer have a badly configured date and time; confusing the
>>      the threaded patch review.
>>
>> ___ Your changes affect IPC mechanism, and you don't present any results
>>      for in-service upgradability test.
>>
>> ___ Your changes affect user manual and documentation, your patch series
>>      do not contain the patch that updates the Doxygen manual.
>>
>


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