From: "Martin K. Petersen" <martin.petersen@oracle.com>
To: Bill Davidsen <davidsen@tmr.com>
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>,
Peter Rabbitson <rabbit+list@rabbit.us>,
NeilBrown <neilb@suse.de>,
Piergiorgio Sartor <piergiorgio.sartor@nexgo.de>,
Goswin von Brederlow <goswin-v-b@web.de>,
Doug Ledford <dledford@redhat.com>,
Michael Evans <mjevans1983@gmail.com>,
Eyal Lebedinsky <eyal@eyal.emu.id.au>,
linux-raid list <linux-raid@vger.kernel.org>
Subject: Re: mismatch_cnt again
Date: Tue, 17 Nov 2009 00:19:40 -0500 [thread overview]
Message-ID: <yq1hbstd8yb.fsf@sermon.lab.mkp.net> (raw)
In-Reply-To: <4AFEE283.9040702@tmr.com> (Bill Davidsen's message of "Sat, 14 Nov 2009 12:01:55 -0500")
>>>>> "Bill" == Bill Davidsen <davidsen@tmr.com> writes:
>> FWIW, databases on raw disk have gone out of fashion. But it is true
>> that applications that do direct I/O need to avoid updating buffers
>> in flight.
>>
Bill> May have gone out of fashion in new applications (I'm not sure I
Bill> agree, but as a talking point),
I don't believe Oracle supports it anymore. ASM solves this and several
other problems.
Bill> but there are tons of old apps which are not going to be updated
Bill> any time soon, and any number of libraries which mmap stuff and
Bill> effect multiple applications.
We'll just unmap the page while it's being written out.
--
Martin K. Petersen Oracle Linux Engineering
next prev parent reply other threads:[~2009-11-17 5:19 UTC|newest]
Thread overview: 58+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-11-07 0:41 mismatch_cnt again Eyal Lebedinsky
2009-11-07 1:53 ` berk walker
2009-11-07 7:49 ` Eyal Lebedinsky
2009-11-07 8:08 ` Michael Evans
2009-11-07 8:42 ` Eyal Lebedinsky
2009-11-07 13:51 ` Goswin von Brederlow
2009-11-07 14:58 ` Doug Ledford
2009-11-07 16:23 ` Piergiorgio Sartor
2009-11-07 16:37 ` Doug Ledford
2009-11-07 22:25 ` Eyal Lebedinsky
2009-11-07 22:57 ` Doug Ledford
2009-11-08 15:32 ` Goswin von Brederlow
2009-11-09 18:08 ` Bill Davidsen
2009-11-07 22:19 ` Eyal Lebedinsky
2009-11-07 22:58 ` Doug Ledford
2009-11-08 15:46 ` Goswin von Brederlow
2009-11-08 16:04 ` Piergiorgio Sartor
2009-11-09 18:22 ` Bill Davidsen
2009-11-09 21:50 ` NeilBrown
2009-11-10 18:05 ` Bill Davidsen
2009-11-10 22:17 ` Peter Rabbitson
2009-11-13 2:15 ` Neil Brown
2009-11-09 19:13 ` Goswin von Brederlow
2009-11-08 22:51 ` Peter Rabbitson
2009-11-09 18:56 ` Piergiorgio Sartor
2009-11-09 21:14 ` NeilBrown
2009-11-09 21:54 ` Piergiorgio Sartor
2009-11-10 0:17 ` NeilBrown
2009-11-10 9:09 ` Peter Rabbitson
2009-11-10 14:03 ` Martin K. Petersen
2009-11-12 22:40 ` Bill Davidsen
2009-11-13 17:12 ` Martin K. Petersen
2009-11-14 17:01 ` Bill Davidsen
2009-11-17 5:19 ` Martin K. Petersen [this message]
2009-11-14 19:04 ` Goswin von Brederlow
2009-11-17 5:22 ` Martin K. Petersen
2009-11-10 19:52 ` Piergiorgio Sartor
2009-11-13 2:37 ` Neil Brown
2009-11-13 5:30 ` Goswin von Brederlow
2009-11-13 9:33 ` Peter Rabbitson
2009-11-15 21:05 ` Piergiorgio Sartor
2009-11-15 22:29 ` Guy Watkins
2009-11-16 1:23 ` Goswin von Brederlow
2009-11-16 1:37 ` Neil Brown
2009-11-16 5:21 ` Goswin von Brederlow
2009-11-16 5:35 ` Neil Brown
2009-11-16 7:40 ` Goswin von Brederlow
2009-11-12 22:57 ` Bill Davidsen
2009-11-09 18:11 ` Bill Davidsen
2009-11-09 20:58 ` Doug Ledford
2009-11-09 22:03 ` Eyal Lebedinsky
-- strict thread matches above, loose matches on Subject: below --
2009-11-12 19:20 greg
2009-11-13 2:28 ` Neil Brown
2009-11-13 5:19 ` Goswin von Brederlow
2009-11-15 1:54 ` Bill Davidsen
2009-11-16 21:36 greg
2009-11-16 22:14 ` Neil Brown
2009-11-17 4:50 ` Goswin von Brederlow
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