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From: "Jun'ichi Nomura" <j-nomura@ce.jp.nec.com>
To: LVM general discussion and development <linux-lvm@redhat.com>
Subject: Re: [linux-lvm] Some questions on "Mirrors cannot be resized while active yet"
Date: Mon, 13 Aug 2007 14:10:46 -0400	[thread overview]
Message-ID: <46C09EA6.9060701@ce.jp.nec.com> (raw)
In-Reply-To: <330CCC1A-5400-472C-8DCE-59CCE61E739C@redhat.com>

Jonathan Brassow wrote:
> I don't remember all the reasons, but I *think* two of them were:
> 1) 186304 - potential to spoil redundancy
> 2) cluster mirroring needed ability to hold to identical logs for a
> short period

Maybe not a reason why it's disabled, but I think kernel code
needs to change to allow LVM mirror resizing.

LVM2 uses 'noflush' option for suspending mirror maps.

OTOH, currently you need full (flushing) suspend to resize device.
http://lkml.org/lkml/2007/1/19/136

Thanks,
-- 
Jun'ichi Nomura, NEC Corporation of America

      reply	other threads:[~2007-08-13 18:10 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-08-13 14:36 [linux-lvm] Some questions on "Mirrors cannot be resized while active yet" Simone Gotti
2007-08-13 15:29 ` Jonathan Brassow
2007-08-13 18:10   ` Jun'ichi Nomura [this message]

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