Re: libcrm114 ready - but can't get into sourceforge --> libcrm114 usage and the p_db's

Eventually the flag becomes visible to client and it can reload.  For a 
while the client is not up to date, but that's best that can be had 
without using other channels of communication.  Just an idea, test before 
using.. :-)  NFS can be used to many things .. if you know what you are 
doing.


On Wed, 6 Jul 2011, [email protected] wrote:

> =?ISO-8859-15?Q?Jaakko_Hyv=E4tti?= <[email protected]> writes:
>
>> The signal could be a byte in db, which the classifier checks before each
>> operation.
>>
>> 1. Writer: write new db
>> 2. Writer: open old db
>> 3. Writer: rename new db to old filename
>> 4. Writer: write signal flag to old open db filehandle.
>> 5. Writer: close old db filehandle.
>> 6. Reader: check flag before every operation, or every now and then.
>>
>> How does this work over nfs3, nfs4 etc..?
>
> It doesn't work.  NFSen do not support guaranteed visibility of
> updates.  (been down that rathole before...)  Heck, they don't
> even support sequential atomicity of directory contents...
>
>          - Bill
>

------------------------------------------------------------------------------
All of the data generated in your IT infrastructure is seriously valuable.
Why? It contains a definitive record of application performance, security 
threats, fraudulent activity, and more. Splunk takes this data and makes 
sense of it. IT sense. And common sense.
http://p.sf.net/sfu/splunk-d2d-c2