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Date: Wed, 27 Feb 2013 15:17:21 +0600
From: Roman Mamedov <rm@romanrm.ru>
To: Martin Steigerwald <Martin@lichtvoll.de>
Cc: "Fajar A. Nugraha" <list@fajar.net>,
        "linux-btrfs" <linux-btrfs@vger.kernel.org>,
        Mike Fleetwood <mike.fleetwood@googlemail.com>,
        Suman C <schakrava@gmail.com>
Subject: Re: lvm volume like support
Message-ID: <20130227151721.5da0c46d@natsu>
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On Wed, 27 Feb 2013 09:42:02 +0100
Martin Steigerwald <Martin@lichtvoll.de> wrote:

> Are you sure about the partition support? I thought something related to=
=20
> loop partition support has gone into some not so recent kernel.

Sorry, you are correct, this was in fact added since 2.6.26.

Just tried out making a partitioned loop device:

  dd if=3D/dev/zero of=3D100GB bs=3D1 count=3D1 seek=3D100G
  modprobe loop max_part=3D8
  losetup /dev/loop7 100GB
  cfdisk /dev/loop7

  [ made two partitions, commit, quit cfdisk ]

  [ ...but partitions did not automatically appear as /dev/loop7pX ]

  blockdev --rereadpt /dev/loop7

  [ OK, now here they are: ]
 =20
  $ ls -la /dev/loop7p?
  brw-rw---T 1 root disk 7, 113 Feb 27 15:10 /dev/loop7p1
  brw-rw---T 1 root disk 7, 114 Feb 27 15:10 /dev/loop7p2

--=20
With respect,
Roman

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