[MacLoggerContest] Journalling
John E Bastin
jbastin at sssnet.com
Wed Mar 2 22:50:35 EST 2005
On Mar 2, 2005, at 1:46 PM, Jonathan G0DVJ wrote:
>
> Are we mixing up two meanings of Journalling?
Probably. Perhaps it was a bad choice of words.
> Maybe John mentioned it in the general sense of keeping a journal
> record of QSO data so that nothing is lost. i.e. at the application
> level. There is also the OSX specific meaning of Journalling which
> was introduced in Panther and which is a system-wide volume
> configuration aspect under admin user control at disk set-up time, and
> not the application. Not sure if Jack is alluding to this in his
> posting?
I'm not going into the Mac OS X journaling. I merely desire that the
software, in some manner, provide ongoing protection against data loss,
and one common way of addressing this is to write the data continuously
to a small "journal" file, so that any catastrophe, be it a power
failure or a program crash, does not result in loss of data. I think
the reason for the separate file may be that it is small, and so
read/write access is very fast.
Periodically, it could automatically be flushed to the full log file,
or the user could be prompted to do so manually.
73,
J o h n B a s t i n K8AJS
jbastin at sssnet.com
http://www.qsl.net/k8ajs/
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