From: Peter Rabbitson <rabbit@rabbit.us>
To: linux-raid@vger.kernel.org
Subject: Re: mismatch_cnt questions - how about raid10?
Date: Tue, 06 Mar 2007 11:04:33 +0100 [thread overview]
Message-ID: <45ED3CB1.8070003@rabbit.us> (raw)
In-Reply-To: <17899.17901.429001.702653@notabene.brown>
Neil Brown wrote:
> When we write to a raid1, the data is DMAed from memory out to each
> device independently, so if the memory changes between the two (or
> more) DMA operations, you will get inconsistency between the devices.
Does this apply to raid 10 devices too? And in case of LVM if swap is on
top of a LV which is a part of a VG which has a single PV as the raid
array - will this happen as well? Or will the LVM layer take the data
once and distribute exact copies of it to the PVs (in this case just the
raid) effectively giving the raid array invariable data?
next prev parent reply other threads:[~2007-03-06 10:04 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-03-04 11:22 mismatch_cnt questions Christian Pernegger
2007-03-04 11:50 ` Neil Brown
2007-03-04 12:01 ` Christian Pernegger
2007-03-04 22:19 ` Neil Brown
2007-03-06 10:04 ` Peter Rabbitson [this message]
2007-03-06 10:20 ` mismatch_cnt questions - how about raid10? Neil Brown
2007-03-06 10:56 ` Peter Rabbitson
2007-03-06 10:59 ` Justin Piszcz
2007-03-12 5:35 ` Neil Brown
2007-03-12 14:26 ` Peter Rabbitson
2007-03-04 21:21 ` mismatch_cnt questions Eyal Lebedinsky
2007-03-04 22:30 ` Neil Brown
2007-03-05 7:45 ` Eyal Lebedinsky
2007-03-05 14:56 ` detecting/correcting _slightly_ flaky disks Michael Stumpf
2007-03-05 15:09 ` Justin Piszcz
2007-03-05 17:01 ` Michael Stumpf
2007-03-05 17:11 ` Justin Piszcz
2007-03-07 0:14 ` Bill Davidsen
2007-03-07 1:37 ` Michael Stumpf
2007-03-07 13:57 ` berk walker
2007-03-07 15:01 ` Bill Davidsen
2007-03-05 23:40 ` mismatch_cnt questions Neil Brown
2007-03-07 0:22 ` Bill Davidsen
2007-03-08 6:39 ` H. Peter Anvin
2007-03-08 13:54 ` Martin K. Petersen
2007-03-09 2:00 ` Bill Davidsen
2007-03-09 4:20 ` H. Peter Anvin
2007-03-09 5:20 ` Bill Davidsen
2007-03-08 6:34 ` H. Peter Anvin
2007-03-08 7:00 ` H. Peter Anvin
2007-03-08 8:21 ` H. Peter Anvin
2007-03-13 9:58 ` Andre Noll
2007-03-13 23:46 ` H. Peter Anvin
2007-03-06 6:27 ` Paul Davidson
2008-05-12 11:16 ` Bas van Schaik
2008-05-12 14:31 ` Justin Piszcz
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=45ED3CB1.8070003@rabbit.us \
--to=rabbit@rabbit.us \
--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).