Message-ID: <43FB331F.9020104@ce.jp.nec.com>
Date: Tue, 21 Feb 2006 10:34:55 -0500
From: "Jun'ichi Nomura" <j-nomura@ce.jp.nec.com>
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To: Alasdair G Kergon <agk@redhat.com>
CC: Neil Brown <neilb@suse.de>, Lars Marowsky-Bree <lmb@suse.de>,
       device-mapper development <dm-devel@redhat.com>,
       linux-kernel@vger.kernel.org
Subject: Re: [PATCH 0/3] sysfs representation of stacked devices (dm/md)
References: <43F60F31.1030507@ce.jp.nec.com> <20060217194249.GO12169@agk.surrey.redhat.com> <43F6769C.5010505@ce.jp.nec.com> <20060218195347.GU12169@agk.surrey.redhat.com>
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Alasdair G Kergon wrote:
>>Speaking about the efficiency, 'dmsetup ls --tree' works well.
>>However, I haven't yet found a efficient way to implement
>>'dmsetup info --tree -o inverted dm-0', for example.
>  
> Indeed - but what needs this that doesn't also need to scan
> everything?    mount?

mount, fsck and other blkid based tools could be optimized with it.
However, what I had in mind was system administration like just
using dmsetup or looking /sys to check where a device belongs.

-- 
Jun'ichi Nomura, NEC Solutions (America), Inc.
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