Re: 'filesystem resize max' tries to use devid 1

[Ilya Dryomov <idryomov@gmail.com>]

On Tue, Apr 24, 2012 at 11:31:15AM -0400, Josef Bacik wrote:
> On Sun, Apr 22, 2012 at 11:03:06PM -0400, Jeremy Atkins wrote:
> > Back story:
> > I started my pool with a 200gb partition at the end of my drive (sd=
c5)
> > , until I was able to clear out the data at the beginning of my dri=
ve.
> >  When I was ready, I ran `btrfs dev add /dev/sdc4 /` then `btrfs de=
v
> > del /dev/sdc5 /`,
> >=20
> > $ sudo btrfs fi resize max /
> > Resize '/' of 'max'
> > ERROR: unable to resize '/' - Invalid argument
> >=20
> > in dmesg i see:
> > [ =C2=A0 72.729685] btrfs: resizer unable to find device 1
> >=20
> > $ sudo btrfs fi df /
> > Data: total=3D34.00GB, used=3D17.79GB
> > System, DUP: total=3D64.00MB, used=3D20.00KB
> > Metadata, DUP: total=3D33.50GB, used=3D394.93MB
> >=20
> > $ sudo btrfs fi sh
> > Label: none =C2=A0uuid: b0ad55e2-09e0-4658-8cab-d2e11ba03753
> > =C2=A0 =C2=A0 =C2=A0 =C2=A0 Total devices 1 FS bytes used 17.18GB
> > =C2=A0 =C2=A0 =C2=A0 =C2=A0 devid =C2=A0 =C2=A02 size 1.62TB used 1=
01.12GB path /dev/sdc4
> >=20
> >=20
> > $ uname -r
> > 3.3.2-1.fc16.x86_64
> >=20
> > btrfs-progs version is current git master ( commit 1957076 )
> >=20
> > After writing this email, and searching around the wiki some, I
> > discovered the command to resize specific devids,
> >=20
> > [antrat@tbox ~]$ sudo btrfs fi resize 2:max /
> > Resize '/' of '2:max'
> >=20
> > and in dmesg:
> > [ 1661.933884] btrfs: resizing devid 2
> > [ 1661.933895] btrfs: new size for /dev/sdc4 is 1995564908544
>=20
> Hrm, if we're using filesystem resize max we should probably just max=
 out all
> the devices and not require one specific device, what do you think Il=
ya?

I'd keep the devid:max syntax for maxing out a single device and add a
new fs:max or similar to resize all devices.  ABI here is just a string=
,
so I think it can be easily done.

Thanks,

		Ilya
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