Date: Mon, 04 Oct 2004 11:53:07 -0500 From: "Kevin D. Kinsey, DaleCo, S.P." <kdk@daleco.biz> To: questions@freebsd.org Subject: Magical HDD Space Doubling! <wonky bsdlabel?> Message-ID: <41617FF3.9030407@daleco.biz>
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The other day I decided to dispose of a drive's worth of WinNT data
in order to make more FreeBSD machines in the world (cheer!)
In the past I've often used sysinstall for this purpose, so I decided
to try the other method suggested by the handbook. I think I got
a little funky with bsdlabel, though. Check this out:
% dmesg | grep ad
GEOM: create disk ad0 dp=0xc5f54660
ad0: 38166MB <ST340014A> [77545/16/63] at ata0-master UDMA100
GEOM: create disk ad1 dp=0xc5f54360
ad1: 190782MB <WDC WD2000JB-00GVA0> [387621/16/63] at ata0-slave UDMA100
GEOM: create disk ad3 dp=0xc6020960
ad3: 38166MB <ST340015A> [77545/16/63] at ata1-slave UDMA33
Mounting root from ufs:/dev/ad0s1a
Note that both ad1 and ad3 report 38166 MB disks.
Now, the only thing I intended to be different on the
new disk (ad3) was that it be "dangerously dedicated"
and have its own /tmp partition (ad1 has tmp on /).
However:
% df -h
Filesystem Size Used Avail Capacity Mounted on
/dev/ad0s1a 989M 151M 759M 17% /
devfs 1.0K 1.0K 0B 100% /dev
/dev/ad0s1e 34G 20G 11G 66% /usr
/dev/ad0s1d 989M 275M 635M 30% /var
/dev/ad1s1d 180G 60G 106G 36% /backup
/dev/ad3a 36G 614M 33G 2% /mnt
/dev/ad3b 496M 29M 427M 6% /mnt2
/dev/ad3d 989M 273M 637M 30% /mnt3
/dev/ad3e 34G 20G 11G 66% /mnt4
So, ad3 is ~72GB?? ... I'd gladly take the extra space,
but it can't really be there, can it?
Here's the bsdlabel output, and a uname. Can
anyone tell me what I did wrong (other than the obvious,
being "proceeding to use bsdlabel without a thorough handle
on what I was doing ... :-o )
% sudo bsdlabel ad0s1
# /dev/ad0s1:
8 partitions:
# size offset fstype [fsize bsize bps/cpg]
a: 2097152 0 4.2BSD 2048 16384 28552
b: 1048576 2097152 swap
c: 78156162 0 unused 0 0 # "raw" part,
don't edit
d: 2097152 3145728 4.2BSD 2048 16384 28552
e: 72913282 5242880 4.2BSD 2048 16384 28552
% sudo bsdlabel ad3
# /dev/ad3:
8 partitions:
# size offset fstype [fsize bsize bps/cpg]
a: 2097152 0 4.2BSD 2048 16384 28552
b: 1048576 2097152 swap
c: 78165360 0 unused 0 0 # "raw" part,
don't edit
d: 2097152 3145728 4.2BSD 2048 16384 28552
e: 72913282 5242880 4.2BSD 2048 16384 28552
The only difference in the labels is ad3c, which I increased
manually (trial & error) because bsdlabel kept complaining
"partition c doesn't cover entire unit" until I got up to
78165360 ...
%uname -aFreeBSD archangel.daleco.biz 5.2.1-RELEASE-p3
FreeBSD 5.2.1-RELEASE-p3 #2: Fri Apr 23 16:39:28 CDT 2004
root@archangel.daleco.biz:/usr/obj/usr/src/sys/GENERIC i386
[Gee, I thought I'd built world since then...]
Kevin Kinsey
DaleCo, S.P.
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