From: NeilBrown <neilb@cse.unsw.edu.au>
To: Andrew Morton <akpm@osdl.org>
Cc: linux-raid@vger.kernel.org
Subject: [PATCH md 0 of 9] Introduction
Date: Fri, 18 Feb 2005 11:40:44 +1100 [thread overview]
Message-ID: <20050218111131.790.patches@notabene> (raw)
9 patches for md in 2.6.11-rc3-mm2 follow.
1 - tightens up some locking to close a race that is extremely unlikely
to happen (famous last words). It can only happen when failed devices are
being removed.
2 - Fixes a resync related problem for raid5 and raid6 arrays that have
lost more devices than they can cope with.
3 - Fixes a clumsy test that has very little real effect (just a printk).
These three can be considered stable.
4,5 Improve handling of 'safemode' which is where we mark the superblock
clean whenever there have been no writes for a little while, and mark
it dirty before the next write.
6-9 Introduce "bitmap based intent logging" which allows a file to
store - as a bitmap - all block that may have been written recently.
This allow resync to be optimised, which is more important as drives
get larger.
These should not be considerred stable - certainly actually using
the bitmap mode (which requires a 2.0 series version of mdadm) should
be seen as 'experimental'.
mdadm-2.0-devel-1 was released today.
NeilBrown
next reply other threads:[~2005-02-18 0:40 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-02-18 0:40 NeilBrown [this message]
2005-02-18 0:40 ` [PATCH md 1 of 9] Remove possible oops in md/raid1 NeilBrown
2005-02-18 0:40 ` [PATCH md 7 of 9] Optimised resync using Bitmap based intent logging NeilBrown
2005-02-18 0:40 ` [PATCH md 8 of 9] raid1 support for bitmap " NeilBrown
2005-02-18 0:40 ` [PATCH md 5 of 9] Improve locking on 'safemode' and move superblock writes NeilBrown
2005-02-18 0:40 ` [PATCH md 6 of 9] Improve the interface to sync_request NeilBrown
2005-02-18 0:40 ` [PATCH md 3 of 9] Remove kludgy level check from md.c NeilBrown
2005-02-18 0:40 ` [PATCH md 2 of 9] Make raid5 and raid6 robust against failure during recovery NeilBrown
2005-02-18 0:40 ` [PATCH md 4 of 9] Merge md_enter_safemode into md_check_recovery NeilBrown
2005-02-18 0:40 ` [PATCH md 9 of 9] Optimise reconstruction when re-adding a recently failed drive NeilBrown
2005-02-18 0:51 ` Mike Hardy
2005-02-18 0:58 ` Neil Brown
2005-02-18 14:25 ` [PATCH md 0 of 9] Introduction Phantazm
2005-02-20 22:55 ` Neil Brown
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=20050218111131.790.patches@notabene \
--to=neilb@cse.unsw.edu.au \
--cc=akpm@osdl.org \
--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).