From: NeilBrown <neilb@suse.de>
To: majianpeng <majianpeng@gmail.com>
Cc: linux-raid <linux-raid@vger.kernel.org>
Subject: Re: about:conf->recovery_disabled and mddev->recovery_disabled
Date: Mon, 9 Apr 2012 10:03:29 +1000 [thread overview]
Message-ID: <20120409100329.5eff419d@notabene.brown> (raw)
In-Reply-To: <201204071713172658588@gmail.com>
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On Sat, 7 Apr 2012 17:13:22 +0800 "majianpeng" <majianpeng@gmail.com> wrote:
> Hi all:
> I confused the recovery_disabled.
> what's the mean when conf->recovery_disabled = mddev->recovery_disabled?
> If equal,so not to add disk and not to recovery?
Yes, exactly.
in an attempt to recover a device fails we don't want to immediately retry as
that would cause a loop.
So whenever a recovery fails, we set conf->recovery_disabled to match
mddev->recovery_disable. And whenever something changes which might make
recovery possible, we increment mddev->recovery_disabled, so that it tries
again.
With raid10, the 'recovery_disabled' is per-disk, not per-array.
NeilBrown
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next prev parent reply other threads:[~2012-04-09 0:03 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-07 9:13 about:conf->recovery_disabled and mddev->recovery_disabled majianpeng
2012-04-09 0:03 ` NeilBrown [this message]
2012-04-10 5:37 ` majianpeng
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