From: NeilBrown <neilb@suse.de>
To: Errol Neal <eneal@businessgrade.com>
Cc: Linux-RAID <linux-raid@vger.kernel.org>
Subject: Re: auto assemble in read-only mode?
Date: Tue, 7 Oct 2014 18:15:20 +1100 [thread overview]
Message-ID: <20141007181520.359d939b@notabene.brown> (raw)
In-Reply-To: <1412664991898536500@businessgrade.com>
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On Tue, 7 Oct 2014 02:56:31 -0400 Errol Neal <eneal@businessgrade.com> wrote:
> On Mon, 10/06/2014 09:06 AM, Errol Neal <eneal@businessgrade.com> wrote:
> > hi folks. is it possible to assemble an md device in read-only mode?
> > after an array has been assembled, I know I can mark it as readonly with --misc -o /dev/md0 for example, but only after its been assembled it seems..
> >
>
> Hi again. No thoughts here?
Not even 18 hours since you last asked - what do you thing this is? The
Internet :-)
> I'm need to run a RAID1 device on two independent nodes (shared storage) and I'd like to assemble the device on the "slave" node in read-only mode to prevent any sync actions and etc.
Did you try adding the "--readonly" option to your --assemble command?
(Always best to report everything you tried and how it failed - requires less
guess work).
I hope you don't expect too much of a filesystem mounted from such an array
while the other node is writing to the array...
NeilBrown
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next prev parent reply other threads:[~2014-10-07 7:15 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-06 13:06 auto assemble in read-only mode? Errol Neal
2014-10-07 6:56 ` Errol Neal
2014-10-07 7:15 ` NeilBrown [this message]
2014-10-07 12:31 ` Errol Neal
2014-10-07 23:33 ` NeilBrown
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