growfs

[Doug Sampson]

I want to ensure that I am correctly applying the concept of the growfs
command.

I want to remove /dev/ad2s1h and expand /dev/ad2s1g to occupy all of the
space left behind by the deletion of /dev/ad2s1h.

root at aries:/root# bsdlabel -e /dev/ad2s1
# /dev/ad2s1:
8 partitions:
#        size   offset    fstype   [fsize bsize bps/cpg]
  a:   524288        0    4.2BSD     2048 16384 32776
  b:  4138384   524288      swap
  c: 586099332        0    unused        0     0         # "raw" part, don't
edit
  d:   524288  4662672    4.2BSD        0     0     0
  e:   524288  5186960    4.2BSD        0     0     0
  f: 10485760  5711248    4.2BSD        0     0     0
  g: 167772160 16197008    4.2BSD        0     0     0
  h: 402130164 183969168    4.2BSD        0     0     0

root at aries:/root# df
Filesystem               1K-blocks     Used    Avail Capacity  Mounted on
/dev/ad2s1a                 253678    60858   172526    26%    /
devfs                            1        1        0   100%    /dev
/dev/ad2s1e                 253678      410   232974     0%    /tmp
/dev/ad2s1f                5077038  4129758   541118    88%    /usr
/dev/ad2s1d                 253678   130346   103038    56%    /var
/dev/ad2s1g               81245672 67645604  7100416    91%    /data
/dev/ad2s1h              194736504 99902864 79254720    56%    /backup

According to http://www.freebsd.org/cgi/man.cgi?query=growfs&sektion=8, it
looks like that if I wish to expand /dev/ad2s1g to fill out the slice, the
only thing I need to do are the following:

-remove /dev/ad2s1h
-growfs -s 569902324 /dev/ad2s1g
-edit /etc/fstab to remove all references to /dev/ad2s1h

Is this correct? Am I missing any other commands?

Since the only tool I am familiar with and use for disk partitioning is
sysinstall, how do I remove /dev/ad2s1h without resorting to sysinstall?
Fdisk?

I want to be extremely sure that I am taking the correct steps to perform
this operation. Yes, I have backups but this machine is in production and I
want to eliminate every possibility of downtime due to issues arising from
the improper understanding and use of the 'growfs' command. Thanks.

~Doug