From: Ming Zhang <mingz@ele.uri.edu>
To: Paul Clements <paul.clements@steeleye.com>
Cc: Neil Brown <neilb@cse.unsw.edu.au>, linux-raid@vger.kernel.org
Subject: Re: write only raid1
Date: Wed, 10 Nov 2004 10:45:41 -0500 [thread overview]
Message-ID: <1100101541.3190.51.camel@localhost.localdomain> (raw)
In-Reply-To: <41922E3E.7050206@steeleye.com>
On Wed, 2004-11-10 at 10:05, Paul Clements wrote:
> Ming Zhang wrote:
>
> > is there any technical issue that lead not to be implemented?
>
> No. In fact, it has been implemented. Both Peter T. Breuer and I have
> come up with slightly different patches to implement the write only
> functionality.
>
can u send me the patch then i can have a look?
> > is there any place to find previous discussion on this? i try the google
> > but fail. i do no know which key word can find that. thx.
>
> Try the archives of this mailing list:
>
> http://marc.theaimsgroup.com/?l=linux-raid&r=1&w=2
>
> This has been discussed a couple of times and patches have been posted
> to the list in the past.
>
i must be an idiot. i search again and can not find. even with either of
your two guys' name. :P i have to change my eyeglass again. sigh.
> --
> Paul
>
>
>
> > On Thursday November 4, mingz@ele.uri.edu wrote:
> >
> >>Hi, folks?
> >>
> >>I would like to know if current RAID1 support or willing to support a
> >>RAID1 with a write only device? For example, u can setup 2 disks to
> >
> > form
> >
> >>a raid1, you fork 2 writes to both disks while you only read from one.
> >>this will be very useful for logging purpose or replication.
> >
> >
> > This functionality has been discussed, but have not been implemented
> > in a released kernel yet.
> >
> > NeilBrown
> >
> >
> > -
> > 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
> >
--
--------------------------------------------------
| Ming Zhang, PhD. Student
| Dept. of Electrical & Computer Engineering
| College of Engineering
| University of Rhode Island
| Kingston RI. 02881
| e-mail: mingz at ele.uri.edu
| Tel. (401) 874-2293
| Fax. (401) 782-6422
| http://www.ele.uri.edu/~mingz/
| http://crab.ele.uri.edu/gallery/albums.php
--------------------------------------------------
next prev parent reply other threads:[~2004-11-10 15:45 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-11-10 14:20 write only raid1 Ming Zhang
2004-11-10 15:05 ` Paul Clements
2004-11-10 15:45 ` Ming Zhang [this message]
2004-11-10 15:56 ` Paul Clements
2004-11-10 16:13 ` Ming Zhang
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