From: Mario Holbe <Mario.Holbe@TU-Ilmenau.DE>
To: linux-raid@vger.kernel.org
Subject: Re: [PATCH 1/2] md bitmap bug fixes
Date: Fri, 18 Mar 2005 21:24:05 +0100 [thread overview]
Message-ID: <d1fd9v$7h6$1@sea.gmane.org> (raw)
In-Reply-To: e1nrg2-os1.ln1@news.it.uc3m.es
Peter T. Breuer <ptb@lab.it.uc3m.es> wrote:
> Yes, you can "sync" them by writing any one of the two mirrors to the
> other one, and need do so only on the union of the mapped data areas,
As far as I understand the issue, this is exactly what should be
possible.
> but it won't help you get the right data (i.e. "yes").
There is no such thing like "the right data" from a block device's
point of view. Both mirrors have "right data", since both got written
independently. Thus, somebody has to choose one mirror being the
"more right" one. This, of course, is in administrators hands.
However, if somebody did so, exactly the sync you described above
(union of the mapped data areas) must happen.
regards
Mario
--
> As Luke Leighton said once on samba-ntdom, "now, what was that about
> rebooting? that was so long ago, i had to look it up with man -k."
next prev parent reply other threads:[~2005-03-18 20:24 UTC|newest]
Thread overview: 71+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-03-09 22:18 [PATCH 1/2] md bitmap bug fixes Paul Clements
2005-03-09 22:19 ` [PATCH 2/2] " Paul Clements
2005-03-14 4:43 ` [PATCH 1/2] " Neil Brown
2005-03-14 9:44 ` Lars Marowsky-Bree
2005-03-14 10:22 ` Neil Brown
2005-03-14 11:24 ` Lars Marowsky-Bree
2005-03-14 22:54 ` Neil Brown
2005-03-18 10:33 ` Lars Marowsky-Bree
2005-03-18 12:52 ` Peter T. Breuer
2005-03-18 13:42 ` Lars Marowsky-Bree
2005-03-18 14:50 ` Peter T. Breuer
2005-03-18 17:03 ` Paul Clements
2005-03-18 18:43 ` Peter T. Breuer
2005-03-18 19:01 ` Mario Holbe
2005-03-18 19:33 ` Peter T. Breuer
2005-03-18 20:24 ` Mario Holbe [this message]
2005-03-18 21:01 ` Andy Smith
2005-03-19 11:43 ` Peter T. Breuer
2005-03-19 12:58 ` Lars Marowsky-Bree
2005-03-19 13:27 ` Peter T. Breuer
2005-03-19 14:07 ` Lars Marowsky-Bree
2005-03-19 15:06 ` Peter T. Breuer
2005-03-19 15:24 ` Mario Holbe
2005-03-19 15:58 ` Peter T. Breuer
2005-03-19 16:24 ` Lars Marowsky-Bree
2005-03-19 17:19 ` Peter T. Breuer
2005-03-19 17:36 ` Lars Marowsky-Bree
2005-03-19 17:44 ` Guy
2005-03-19 17:54 ` Lars Marowsky-Bree
2005-03-19 18:05 ` Guy
2005-03-19 20:29 ` berk walker
2005-03-19 18:11 ` Peter T. Breuer
2005-03-18 19:43 ` Paul Clements
2005-03-19 12:10 ` Peter T. Breuer
2005-03-21 16:07 ` Paul Clements
2005-03-21 18:56 ` Luca Berra
2005-03-21 19:58 ` Paul Clements
2005-03-21 20:45 ` Peter T. Breuer
2005-03-21 21:09 ` Gil
2005-03-21 21:19 ` Paul Clements
2005-03-21 22:15 ` Peter T. Breuer
2005-03-22 22:35 ` Peter T. Breuer
2005-03-21 21:32 ` Guy
2005-03-22 9:35 ` Luca Berra
2005-03-22 10:02 ` Peter T. Breuer
2005-03-23 20:31 ` Luca Berra
2005-03-25 18:51 ` Peter T. Breuer
2005-03-25 20:54 ` berk walker
2005-03-25 20:56 ` berk walker
2005-03-18 17:16 ` Luca Berra
2005-03-18 17:57 ` Lars Marowsky-Bree
2005-03-18 21:46 ` Michael Tokarev
2005-03-19 9:05 ` Lars Marowsky-Bree
2005-03-19 12:16 ` Peter T. Breuer
2005-03-19 12:34 ` Michael Tokarev
2005-03-19 12:53 ` Peter T. Breuer
2005-03-19 16:08 ` "Robust Read" (was: [PATCH 1/2] md bitmap bug fixes) Michael Tokarev
2005-03-19 17:03 ` "Robust Read" Peter T. Breuer
2005-03-19 20:20 ` Michael Tokarev
2005-03-19 20:56 ` Peter T. Breuer
2005-03-19 22:05 ` Michael Tokarev
2005-03-19 22:30 ` Peter T. Breuer
2005-03-15 4:24 ` [PATCH 1/2] md bitmap bug fixes Paul Clements
2005-03-17 20:51 ` [PATCH 0/3] md bitmap-based asynchronous writes Paul Clements
2005-03-17 20:53 ` [PATCH 1/3] md bitmap async write enabling Paul Clements
2005-03-17 20:55 ` [PATCH 2/3] md bitmap async writes for raid1 Paul Clements
2005-03-17 20:56 ` [PATCH 3/3] mdadm: bitmap async writes Paul Clements
2005-03-21 4:21 ` [PATCH 0/3] md bitmap-based asynchronous writes Neil Brown
2005-03-21 16:31 ` Paul Clements
2005-03-21 22:09 ` Neil Brown
2005-03-22 8:35 ` Peter T. Breuer
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to='d1fd9v$7h6$1@sea.gmane.org' \
--to=mario.holbe@tu-ilmenau.de \
--cc=linux-raid@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).