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From: =?utf-8?Q?Dag-Erling_Sm=C3=B8rgrav?= <des@des.no>
To: Pawel Jakub Dawidek <pjd@FreeBSD.org>
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Date: Tue, 22 Jul 2008 15:38:19 +0200
In-Reply-To: <20080722125024.GE3241@garage.freebsd.pl> (Pawel Jakub Dawidek's
	message of "Tue\, 22 Jul 2008 14\:50\:24 +0200")
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Cc: Peter Jeremy <peterjeremy@optushome.com.au>,
	Remko Lodder <remko@freebsd.org>, src-committers@freebsd.org,
	"current@freebsd.org" <current@freebsd.org>
Subject: Re: geom_mirror silently upgrading metadata
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Pawel Jakub Dawidek <pjd@FreeBSD.org> writes:
> ZFS does exactly 3. What you are suggesting could be done by not loading
> geom_mirror.ko module and mounting file system read-only from one of the
> mirror components.  [...]

Would it really be that hard for geom_mirror to translate enough of the
old metadata to access the mirror r/o, and only perform the upgrade on
explicit request?

DES
--=20
Dag-Erling Sm=C3=B8rgrav - des@des.no