Date: Wed, 06 Feb 2013 11:58:56 -0600 From: Paul Schmehl <pauls@utdallas.edu> To: FreeBSD Questions List <freebsd-questions@freebsd.org> Subject: How to add unused space to an existing install Message-ID: <47D0E9AD1EEAC6058A534838@utd71538.campus.ad.utdallas.edu>
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I have a FreeBSD 8.3 RELEASE box that we recently discovered only has part
of the "disk" being used. This box has four 1TB drives in RAID 5, and df
only shows 500MB of disk available.
fdisk shows this:
# fdisk -p
# /dev/mfid0
g c364602 h255 s63
p 1 0xa5 63 1562363771
a 1
When I run the fdisk editor in sysinstall I see this:
Disk name: mfid0 FDISK Partition
Editor
DISK Geometry: 364602 cyls/255 heads/63 sectors = 5857331130 sectors
(2860024MB)
Offset Size(ST) End Name PType Desc Subtype
Flags
0 63 62 - 12 unused 0
63 1562363771 1562363833 mfid0s1 8 freebsd 165
1562363834 4294981702 5857345535 - 12 unused 0
I want to capture all that unused space and add it to the server.
fstab has this:
# cat /etc/fstab
# Device Mountpoint FStype Options Dump Pass#
/dev/mfid0s1b none swap sw 0 0
/dev/mfid0s1a / ufs rw 1 1
/dev/mfid0s1e /home ufs rw 2 2
/dev/mfid0s1d /tmp ufs rw 2 2
/dev/mfid0s1f /usr ufs rw 2 2
/dev/mfid0s1g /var ufs rw 2 2
/dev/acd0 /cdrom cd9660 ro,noauto 0 0
When I try to create a new slice using fdisk, it doesn't seem to work. If
I move to the label editor, I get this:
FreeBSD Disklabel Editor
Disk: mfid0 Partition name: mfid0s1 Free: 0 blocks (0MB)
Part Mount Size Newfs Part Mount Size Newfs
---- ----- ---- ----- ---- ----- ---- -----
mfid0s1a <none> 2000MB *
mfid0s1d <none> 65536MB *
mfid0s1e <none> 4096MB *
mfid0s1b swap 65536MB SWAP
mfid0s1f <none> 10240MB *
mfid0s1g <none> 601GB *
As you can see mfid0s1g is 601GB, and according to fstab that's /var.
Yet df -h shows:
# df -h
Filesystem Size Used Avail Capacity Mounted on
/dev/mfid0s1a 1.9G 726M 1.0G 41% /
devfs 1.0k 1.0k 0B 100% /dev
/dev/mfid0s1e 3.9G 38M 3.5G 1% /home
/dev/mfid0s1d 62G 6.6M 57G 0% /tmp
/dev/mfid0s1f 9.7G 7.5G 1.4G 84% /usr
/dev/mfid0s1g 582G 39G 496G 7% /var
So apparently I'm not creating this new slice? It should be /dev/mfid0s1h,
correct?
How to I "recapture" the remaining 2+TB of space that's not being used?
--
Paul Schmehl (pauls@utdallas.edu)
Senior Information Security Analyst
The University of Texas at Dallas
http://www.utdallas.edu/infosecurity/
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