From: Bill Davidsen <davidsen@tmr.com>
To: Cody Yellan <cody@mochamail.com>
Cc: linux-raid@vger.kernel.org
Subject: Re: raid5 grow reshaping speed is unchangeable
Date: Thu, 27 Dec 2007 19:53:58 -0500 [thread overview]
Message-ID: <47744926.6010808@tmr.com> (raw)
In-Reply-To: <380-220071242752242883@mochamail.com>
Cody Yellan wrote:
> I had a 4x500GB SATA2 array, md0. I added one 500GB drive and
> reshaping began at ~2500K/sec. Changing
> /proc/sys/dev/raid/speed_limit_m{in,ax} or
> /sys/block/md0/md/sync_speed_m{in,ax} had no effect. I shut down all
> unnecessary services and the array is offline (not mounted). I have
> read that the throttling code is "fragile" (esp. with regard to
> raid5) but does this make sense? I will wait (in)patiently for it to
> finish, but I do wonder why the configuration parameters have no
> effect. This is a dual quad 2GHz Xeon machine with 8GB of memory
> running RHEL5. Is this the maximum speed?
>
Something else going on, I do better than that adding drives on USB!
I don't have a clue what the issue is, and I don't see anything in your
information which looks unusual.
--
Bill Davidsen <davidsen@tmr.com>
"Woe unto the statesman who makes war without a reason that will still
be valid when the war is over..." Otto von Bismark
next prev parent reply other threads:[~2007-12-28 0:53 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-12-27 5:22 raid5 grow reshaping speed is unchangeable Cody Yellan
2007-12-27 22:10 ` Nagilum
2007-12-28 0:53 ` Bill Davidsen [this message]
2007-12-28 3:13 ` Richard Scobie
-- strict thread matches above, loose matches on Subject: below --
2007-12-27 7:46 Cody Yellan
2007-12-28 0:57 ` Bill Davidsen
2007-12-28 19:21 Cody Yellan
2007-12-29 4:38 ` Richard Scobie
2007-12-29 0:52 Cody Yellan
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