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Date:      Thu, 28 Apr 2011 00:13:24 +0400
From:      "Andrey V. Elsukov" <bu7cher@yandex.ru>
To:        freebsd-geom@FreeBSD.ORG
Subject:   [RFC] auto-alignment partitions with gpart
Message-ID:  <4DB878E4.6060405@yandex.ru>

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Hi,

The following patch adds to gpart(8) ability automatically adjust
partition offset and size to given alignment.
http://people.freebsd.org/~ae/gpart_align.diff

Example:
# gpart create -s gpt md0
md0 created
# gpart show md0
=3D>    34  409533  md0  GPT  (200M)
      34  409533       - free -  (200M)

# gpart add -t freebsd-boot -s 128k -a 4k md0
md0p1 added
# gpart add -t freebsd-ufs -s 60m -a 4k md0
md0p2 added
# gpart add -t freebsd-ufs -a 4k md0
md0p3 added
# gpart show md0
=3D>    34  409533  md0  GPT  (200M)
      34       6       - free -  (3.0K)
      40     256    1  freebsd-boot  (128K)
     296  122880    2  freebsd-ufs  (60M)
  123176  286384    3  freebsd-ufs  (139M)
  409560       7       - free -  (3.5K)

--=20
WBR, Andrey V. Elsukov


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