Date: Wed, 7 Sep 2011 02:21:26 +0200 From: Mikael Fridh <frimik@gmail.com> To: freebsd-current@freebsd.org Cc: marcel@freebsd.org Subject: FreeBSD 9.0 BETA2 gpart resize -s uses whole disk on first resize Message-ID: <CALoBCad4=LajXqXEEnEqq3SNvUcVV57ZyXdYoCvoG6U-WdOUpg@mail.gmail.com>
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Hi gurus,
FreeBSD freebsd9.mg8.tmtowtdi.se 9.0-BETA2 FreeBSD 9.0-BETA2 #0: Wed
Aug 31 18:07:44 UTC 2011
root@farrell.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC amd64
When resizing a partition, on first attempt it uses up the whole disk.
Only on second attempt it resizes to the correct target size.
Resizing from any smaller size to a larger size initially uses up the
whole disk, like if -s was not used at all even if it's as little as
one logical disk block.
I'm wondering if anyone else can reproduce.
I just tried to perform the same on an old 8.2-STABLE machine and it
did not behave the same. Growing a partition worked fine on initial
attempts.
See excerpt from session below:
freebsd9# gpart show ada0
=> 34 3907029101 ada0 GPT (1.8T)
34 30 - free - (15k)
64 128 1 freebsd-boot (64k)
192 8388608 2 freebsd-swap (4.0G)
8388800 3898640335 - free - (1.8T)
freebsd9# expr 8388608 \* 4
33554432
freebsd9# gpart resize -i 2 -s 33554432 ada0
ada0p2 resized
freebsd9# gpart show ada0
=> 34 3907029101 ada0 GPT (1.8T)
34 30 - free - (15k)
64 128 1 freebsd-boot (64k)
192 3907028936 2 freebsd-swap (1.8T)
3907029128 7 - free - (3.5k)
freebsd9# gpart resize -i 2 -s 33554432 ada0
ada0p2 resized
freebsd9# gpart show ada0
=> 34 3907029101 ada0 GPT (1.8T)
34 30 - free - (15k)
64 128 1 freebsd-boot (64k)
192 33554432 2 freebsd-swap (16G)
33554624 3873474511 - free - (1.8T)
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