Date: Wed, 7 Sep 2011 22:27:40 +0200 From: Mikael Fridh <frimik@gmail.com> To: "Andrey V. Elsukov" <ae@freebsd.org> Cc: freebsd-current@freebsd.org Subject: Re: FreeBSD 9.0 BETA2 gpart resize -s uses whole disk on first resize Message-ID: <CALoBCafUnLnjXwfam%2BA8DXEsetp144Vs9wfh=Aj8s0KSJ3LoSw@mail.gmail.com> In-Reply-To: <4E679063.5020700@FreeBSD.org> References: <CALoBCad4=LajXqXEEnEqq3SNvUcVV57ZyXdYoCvoG6U-WdOUpg@mail.gmail.com> <4E679063.5020700@FreeBSD.org>
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2011/9/7 Andrey V. Elsukov <ae@freebsd.org>:
> On 07.09.2011 04:21, Mikael Fridh wrote:
>> 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 =A0amd64
>>
>> 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 can't reproduce.
>
> So, can you enable G_F_CTLDUMP flag and try it again, and show what you
> will get?
> Just use:
> # sysctl kern.geom.debugflags=3D0x80
> # gpart resize -i 2 -s 33554432 md0
>
> On the console (and in the log files) will be printed some info.
I saw your patch and will try to patch and try it.
For completion here is the information you requested.
freebsd9# gpart add -t freebsd-swap -s 200 -l testswap ada0
ada0p5 added
freebsd9# gpart show ada0
=3D> 34 3907029101 ada0 GPT (1.8T)
34 30 - free - (15k)
64 128 1 freebsd-boot (64k)
192 33554240 2 freebsd-swap (16G)
33554432 209715200 3 freebsd-zfs (100G)
243269632 3663757312 4 freebsd-zfs (1.7T)
3907026944 200 5 freebsd-swap (100k)
3907027144 1991 - free - (995k)
freebsd9# sysctl kern.geom.debugflags=3D0x80
kern.geom.debugflags: 0 -> 128
freebsd9# gpart resize -i 5 -s 800 ada0
ada0p5 resized
freebsd9# gpart show ada0
=3D> 34 3907029101 ada0 GPT (1.8T)
34 30 - free - (15k)
64 128 1 freebsd-boot (64k)
192 33554240 2 freebsd-swap (16G)
33554432 209715200 3 freebsd-zfs (100G)
243269632 3663757312 4 freebsd-zfs (1.7T)
3907026944 2184 5 freebsd-swap (1.1M)
3907029128 7 - free - (3.5k)
freebsd9# diskinfo -v ada0
ada0
512 # sectorsize
2000398934016 # mediasize in bytes (1.8T)
3907029168 # mediasize in sectors
4096 # stripesize
0 # stripeoffset
3876021 # Cylinders according to firmware.
16 # Heads according to firmware.
63 # Sectors according to firmware.
WD-WCAVY1880124 # Disk ident.
dmesg output from gpart add and 2 sequential gpart resizes (gpart
resize -i 5 -s 800 ada0):
* add:
Dump of gctl request at 0xfffffe0002b94a80:
param: "class" [R5] =3D "PART"
param: "verb" [R4] =3D "add"
param: "version" [R4] =3D 00 00 00 00
param: "type" [R13] =3D "freebsd-swap"
param: "size" [R4] =3D "200"
param: "label" [R9] =3D "testswap"
param: "start" [R11] =3D "3907026944"
param: "flags" [R2] =3D "C"
param: "arg0" [R5] =3D "ada0"
param: "output" [RW4096] =3D 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
* resize 1:
Dump of gctl request at 0xfffffe0002b94c80:
param: "class" [R5] =3D "PART"
param: "verb" [R7] =3D "resize"
param: "version" [R4] =3D 00 00 00 00
param: "index" [R8] =3D 05 00 00 00 00 00 00 00
param: "size" [R5] =3D "2184"
param: "flags" [R2] =3D "C"
param: "arg0" [R5] =3D "ada0"
param: "output" [RW4096] =3D 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
* resize 2:
Dump of gctl request at 0xfffffe0002b93680:
param: "class" [R5] =3D "PART"
param: "verb" [R7] =3D "resize"
param: "version" [R4] =3D 00 00 00 00
param: "index" [R8] =3D 05 00 00 00 00 00 00 00
param: "size" [R4] =3D "800"
param: "flags" [R2] =3D "C"
param: "arg0" [R5] =3D "ada0"
param: "output" [RW4096] =3D 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
--
Mikael Fridh
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