Grow Partion or Map /usr and /var to New Partition Out of Disk Space - Linux Setup, Configuration & Administration

[Gary]

I have two hard disks. One has the /boot and windows the other has / .The
second hard disk has all of the Linux partitions. In addition the second
drive had a windows partition that I repartitioned Linux ext3. All I need
really is to grow the / partition which is now 3.7 gig or add the new
partition which is 4.1 gig with some mapping /usr and /var. My problem is
that I don't want to reinstall Redhat 9.0 since I have everything working
so I would have to copy the existing /usr and /var to the new partition
and let the operating system know where they are.

Thanks!

[mjt]

On Fri, 28 Nov 2003 07:22:11 -0600, Gary Heinl <net> wrote:
 

.... to grow the current partition, you simply re-create it
to include the new size you want. let's say you have:
/dev/hdb1 == 3.7 gig, formatted as ext3
/dev/hdb2 == 4.1 gig, formatted as ext3

you want hdb1 to include (grow it) hdb2 (using fdisk):

1) delete partition /dev/hdb2
2) let fdisk tell you the starting cylinder # for hdb1
3) delete /dev/hdb1
4) create a new Linux (hdb1) partition, using the starting
cylinder number given in (2) and for the size, give
it the sum of 3.7+4.1 or 7.8M
5) grow the filesystem (which already exists) on hdb1

for a somewhat detailed overview, go here:
http://groups.google.com/advanced_group_search?hl=en

.... and use the following msg-id:
Message-ID: <L25l9.38427$news.prodigy.com>

in here, i described how a resized a reiserfs
 

.... simply create the directories on that blank partition,
copy the directories' contents to the newly created ones,
then specify the entries in /etc/fstab
..
--
/// Michael J. Tobler: motorcyclist, surfer, skydiver, \\\
\\\ and author: "Inside Linux", "C++ HowTo", "C++ Unleashed" ///
Be free and open and breezy! Enjoy! Things won't get any
better so get used to it.

[Leon.]

"Gary Heinl" <net> wrote in message
news:net... 

Well yeah, there are two options

1. grow the / , using ext2resize.

basically, the freespace (the unusued partition) has to be directly after
the end of /

if this is the case, or you are prepared to make this the case on your own,

steps are
i. use fdisk to delete the unused partition
ii delete the / partition and recreate it with the same starting cylinder
but taking up all the free space ...
iii resize...




2. or just mount the new partition at /usr, as you say


 


yep, so how to do that ?

mkdir /mnt/varusr
mount /dev/hdb2 /mnt/varusr
cd /mnt/varusr
mkdir usr
cd usr
find /usr | cpio -pvdum .
cd ..
cd var
find /var | cpio -pvdum .
cd /
mv usr u
mv var v
ln -s /mnt/varusr/usr usr
ln -s /mnt/varisr/var var
vi /etc/fstab - and put the varusr partition in
rm -rf v u &