From: NeilBrown <neilb@suse.de>
To: keld@keldix.com
Cc: linux-raid@vger.kernel.org
Subject: Re: [md PATCH 15/23] md/raid10 - support resizing some RAID10 arrays.
Date: Wed, 14 Mar 2012 17:27:12 +1100 [thread overview]
Message-ID: <20120314172712.3aa9310a@notabene.brown> (raw)
In-Reply-To: <20120314061746.GA28196@www5.open-std.org>
[-- Attachment #1: Type: text/plain, Size: 582 bytes --]
On Wed, 14 Mar 2012 07:17:46 +0100 keld@keldix.com wrote:
> Hi Neil
>
> What is the problem with adding space to the 'far' layout?
>
> I would think you could just create the new array part 1 from the old array part 2, and
> then sync the new array part 2 with the new array part 1. (in the case of a far=2 array,
> for n>2 similar constructs would apply).
If I understand your proposal correctly, you would lose redundancy during the
process, which is not acceptable.
If I don't understand properly - please explain in a bit more detail.
Thanks,
NeilBrown
[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 828 bytes --]
next prev parent reply other threads:[~2012-03-14 6:27 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-03-14 4:40 [md PATCH 00/23] md patches heading for 3.4 NeilBrown
2012-03-14 4:40 ` [md PATCH 05/23] md/raid5: use atomic_dec_return() instead of atomic_dec() and atomic_read() NeilBrown
2012-03-14 4:40 ` [md PATCH 02/23] md/raid10: remove unnecessary smp_mb() from end_sync_write NeilBrown
2012-03-14 4:40 ` [md PATCH 04/23] md: Use existed macros instead of numbers NeilBrown
2012-03-14 4:40 ` [md PATCH 03/23] md/raid5: removed unused 'added_devices' variable NeilBrown
2012-03-14 4:40 ` [md PATCH 06/23] md: allow last device to be forcibly removed from RAID1/RAID10 NeilBrown
2012-03-14 4:40 ` [md PATCH 01/23] md/raid5: make sure reshape_position is cleared on error path NeilBrown
2012-03-14 4:40 ` [md PATCH 10/23] md/raid1, raid10: avoid deadlock during resync/recovery NeilBrown
2012-03-14 4:40 ` [md PATCH 11/23] md: tidy up rdev_for_each usage NeilBrown
2012-03-14 4:40 ` [md PATCH 13/23] md/raid10: handle merge_bvec_fn in member devices NeilBrown
2012-03-14 4:40 ` [md PATCH 07/23] md: allow re-add to failed arrays NeilBrown
2012-03-14 4:40 ` [md PATCH 09/23] md/bitmap: ensure to load bitmap when creating via sysfs NeilBrown
2012-03-14 4:40 ` [md PATCH 12/23] md: add proper merge_bvec handling to RAID0 and Linear NeilBrown
2012-03-14 4:40 ` [md PATCH 14/23] md/raid1: handle merge_bvec_fn in member devices NeilBrown
2012-03-14 4:40 ` [md PATCH 08/23] md: don't set md arrays to readonly on shutdown NeilBrown
2012-04-18 15:37 ` Alexander Lyakas
2012-04-18 17:44 ` Paweł Brodacki
2012-04-18 20:53 ` Alexander Lyakas
2012-04-18 22:48 ` NeilBrown
2012-04-19 9:11 ` Alexander Lyakas
2012-04-19 9:57 ` NeilBrown
2012-04-20 11:30 ` Paweł Brodacki
2012-04-20 12:01 ` NeilBrown
2012-04-21 15:18 ` Paweł Brodacki
2012-04-21 20:42 ` NeilBrown
2012-04-30 10:32 ` Paweł Brodacki
2012-04-20 16:26 ` John Robinson
2012-03-14 4:40 ` [md PATCH 22/23] md: fix clearing of the 'changed' flags for the bad blocks list NeilBrown
2012-03-14 4:40 ` [md PATCH 15/23] md/raid10 - support resizing some RAID10 arrays NeilBrown
2012-03-14 6:17 ` keld
2012-03-14 6:27 ` NeilBrown [this message]
2012-03-14 7:51 ` David Brown
2012-03-14 8:32 ` NeilBrown
2012-03-14 10:20 ` David Brown
2012-03-14 12:37 ` keld
2012-03-14 4:40 ` [md PATCH 20/23] md/bitmap: remove unnecessary indirection when allocating NeilBrown
2012-03-14 4:40 ` [md PATCH 16/23] md/bitmap: remove some unused noise from bitmap.h NeilBrown
2012-03-14 4:40 ` [md PATCH 19/23] md/bitmap: remove some pointless locking NeilBrown
2012-03-14 4:40 ` [md PATCH 17/23] md/bitmap: move printing of bitmap status to bitmap.c NeilBrown
2012-03-14 4:40 ` [md PATCH 21/23] md/bitmap: discard CHUNK_BLOCK_SHIFT macro NeilBrown
2012-03-14 4:40 ` [md PATCH 18/23] md/bitmap: change a 'goto' to a normal 'if' construct NeilBrown
2012-03-14 4:40 ` [md PATCH 23/23] md: Add judgement bb->unacked_exist in function md_ack_all_badblocks() NeilBrown
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=20120314172712.3aa9310a@notabene.brown \
--to=neilb@suse.de \
--cc=keld@keldix.com \
--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).