Linux Device Mapper development
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From: Phillip Susi <psusi-3tLf1voIkJTQT0dZR+AlfA@public.gmane.org>
To: Hannes Reinecke <hare-l3A5Bk7waGM@public.gmane.org>
Cc: device-mapper development
	<dm-devel-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
	serge.hallyn-GeWIH/nMZzLQT0dZR+AlfA@public.gmane.org,
	parted-devel-XbBxUvOt3X2LieD7tvxI8l/i77bcL1HB@public.gmane.org,
	Debian LVM Team
	<pkg-lvm-maintainers-XbBxUvOt3X2LieD7tvxI8l/i77bcL1HB@public.gmane.org>
Subject: Re: [dm-devel] What is the deal with the partition separator?
Date: Wed, 16 Feb 2011 14:37:55 -0500	[thread overview]
Message-ID: <4D5C2793.1020601@cfl.rr.com> (raw)
In-Reply-To: <4D5B7ED9.20304-l3A5Bk7waGM@public.gmane.org>

On 2/16/2011 2:38 AM, Hannes Reinecke wrote:
> The linux scheme since the dawn of time is to
> a) Add the partition number to the device node name
> b) If last letter of the device node name is a number, insert a 'p'
> between device node name and partition number

Since the dawn of time?  Before device mapper it wasn't possible to have
a disk device name ending in a digit.

> with the advent of persistent device names (via udev) the partition
> separator (for persistent links only!) is '-part'.
> 
> So you have
> 
> /dev/sda
> /dev/sda1
> /dev/disk/by-id/scsi-0WhatAStupidName
> /dev/disk/by-id/scsi-0WhatAStupidName-part1
> 
> persistent device names are longish anyway, so we can as well use
> something readable for partitions.

That's fine for the symlinks in by-id, but what about the names in
/dev/mapper and /dev/VG?

  parent reply	other threads:[~2011-02-16 19:37 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-02-16  3:21 What is the deal with the partition separator? Phillip Susi
2011-02-16  7:38 ` Hannes Reinecke
     [not found]   ` <4D5B7ED9.20304-l3A5Bk7waGM@public.gmane.org>
2011-02-16 17:19     ` [dm-devel] " Curtis Gedak
     [not found]       ` <4D5C073F.3020502-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2011-02-16 19:33         ` Phillip Susi
     [not found]           ` <4D5C268B.6070507-3tLf1voIkJTQT0dZR+AlfA@public.gmane.org>
2011-02-16 20:18             ` Curtis Gedak
2011-02-16 19:37     ` Phillip Susi [this message]
     [not found]       ` <4D5C2793.1020601-3tLf1voIkJTQT0dZR+AlfA@public.gmane.org>
2011-02-17  7:29         ` Hannes Reinecke
     [not found]           ` <4D5CCE75.5090202-l3A5Bk7waGM@public.gmane.org>
2011-02-17 14:57             ` Phillip Susi
     [not found]               ` <4D5D375F.9070106-3tLf1voIkJTQT0dZR+AlfA@public.gmane.org>
2011-02-17 15:13                 ` Hannes Reinecke
     [not found]                   ` <4D5D3B34.4000005-l3A5Bk7waGM@public.gmane.org>
2011-02-17 15:13                     ` Phillip Susi
2011-02-17 16:53                       ` Alasdair G Kergon
2011-02-17 16:58                         ` Alasdair G Kergon
     [not found]                         ` <20110217165332.GE28729-FDJ95KluN3Z0klwcnFlA1dvLeJWuRmrY@public.gmane.org>
2011-02-20  5:04                           ` [dm-devel] " Phillip Susi
2011-02-17 16:54                     ` Curtis Gedak

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