From: "Steinar H. Gunderson" <sgunderson@bigfoot.com>
To: Neil Brown <neilb@cse.unsw.edu.au>
Cc: linux-raid@vger.kernel.org
Subject: Re: [PATCH] Online RAID-5 resizing
Date: Wed, 21 Sep 2005 21:23:26 +0200 [thread overview]
Message-ID: <20050921192326.GA30405@uio.no> (raw)
In-Reply-To: <17200.9302.242957.23189@cse.unsw.edu.au>
On Wed, Sep 21, 2005 at 01:01:42AM +1000, Neil Brown wrote:
> I doubt speed is a top priority.
I just found something interesting; if I raise speed_limit_min, I get much
better speed than I initially got. My 2->4 slow IDE disk setup:
md1 : active raid5 hdg1[4] hde1[5] hdc1[1] hda1[0]
39078016 blocks level 5, 64k chunk, algorithm 2 [4/2] [UU__]
[==========>..........] resync = 52.4% (20499840/39078016) finish=50.0min speed=6187K/sec
This is more than good enough for me, at least. :-)
I noticed a problem during a big test resize now, BTW; for some reason,
pdflush goes into uninterruptable sleep, and kjournald and thus the
filesystem seems to follow. I'm not sure if this is a starvation issue or
not, but it sure is a bug -- I'll look into it and see if I find something
obvious.
/* Steinar */
--
Homepage: http://www.sesse.net/
next prev parent reply other threads:[~2005-09-21 19:23 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-09-20 14:33 [PATCH] Online RAID-5 resizing Steinar H. Gunderson
2005-09-20 15:01 ` Neil Brown
2005-09-20 15:36 ` Steinar H. Gunderson
2005-09-22 16:16 ` Neil Brown
2005-09-22 16:32 ` Steinar H. Gunderson
2005-09-23 8:59 ` Neil Brown
2005-09-23 12:50 ` Steinar H. Gunderson
2005-09-22 20:53 ` Steinar H. Gunderson
2005-09-24 1:44 ` Steinar H. Gunderson
2005-10-07 3:09 ` Neil Brown
2005-10-07 14:13 ` Steinar H. Gunderson
2005-10-14 19:46 ` Steinar H. Gunderson
2005-10-16 22:55 ` Neil Brown
2005-10-17 0:16 ` Steinar H. Gunderson
2005-10-19 23:18 ` Steinar H. Gunderson
2005-10-20 13:07 ` Steinar H. Gunderson
2005-10-22 13:45 ` Steinar H. Gunderson
2005-10-22 13:52 ` Neil Brown
2005-10-24 0:37 ` Neil Brown
2005-09-20 18:54 ` Al Boldi
2005-09-21 19:23 ` Steinar H. Gunderson [this message]
2005-09-22 0:14 ` Steinar H. Gunderson
2005-09-22 1:00 ` Steinar H. Gunderson
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=20050921192326.GA30405@uio.no \
--to=sgunderson@bigfoot.com \
--cc=linux-raid@vger.kernel.org \
--cc=neilb@cse.unsw.edu.au \
/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).