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From: berk walker <berk@panix.com>
To: "Peter T. Breuer" <ptb@lab.it.uc3m.es>
Cc: linux-raid@vger.kernel.org
Subject: Re: Bug report: mdadm -E oddity
Date: Fri, 20 May 2005 18:14:44 -0400	[thread overview]
Message-ID: <428E6154.9040803@panix.com> (raw)
In-Reply-To: <on22m2-d85.ln1@news.it.uc3m.es>



Peter T. Breuer wrote:

>berk walker <berk@panix.com> wrote:
>  
>
>>for us old folks, please expand "idempotent" in usage to reflect the 
>>relationships to which you refer.
>>    
>>
>
>Function f is idempotent when f.f = f. I.e. Doing it twice is the same as
>doing it once.
>
>Here the question is if you do a fraction f of a write w, and then do the
>whole write w again, whether you get what you are expecting. I.e. if
>
>     w.f = w
>
>and f is the restriction of w to some set s, f = w|s.
>
>Peter
>
>-
>To unsubscribe from this list: send the line "unsubscribe linux-raid" in
>the body of a message to majordomo@vger.kernel.org
>More majordomo info at  http://vger.kernel.org/majordomo-info.html
>
>.
>
>  
>
OK, I understand that def.  thanks, PTB.
b-

  reply	other threads:[~2005-05-20 22:14 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-05-13 15:44 Bug report: mdadm -E oddity Doug Ledford
2005-05-13 17:11 ` Doug Ledford
2005-05-13 23:01   ` Neil Brown
2005-05-14 13:28     ` Doug Ledford
2005-05-15 17:32       ` Luca Berra
2005-05-20  7:00       ` Neil Brown
2005-05-20 12:30         ` Doug Ledford
2005-05-20 16:04           ` Paul Clements
2005-05-20 17:16             ` Peter T. Breuer
2005-05-20 18:40               ` Doug Ledford
2005-05-20 19:15                 ` Peter T. Breuer
2005-05-20 21:31                   ` Doug Ledford
2005-05-20 17:45             ` Doug Ledford
2005-05-20 18:33               ` Peter T. Breuer
2005-05-20 20:01                 ` berk walker
2005-05-20 21:00                   ` Gil
2005-05-20 21:51                   ` Peter T. Breuer
2005-05-20 22:14                     ` berk walker [this message]
2005-05-20 20:05                 ` Paul Clements
2005-05-16 16:46     ` Doug Ledford
2005-05-20  7:08       ` Neil Brown
2005-05-20 11:29         ` Doug Ledford
2005-05-16 22:11   ` Doug Ledford

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