Ubuntu 9.04 Server - Help me find other partition and format it

DJMK4 · 27 Oct 2009 at 10:26

Hi,

When I installed ubuntu, I have 1 single HDD in there (80GB) of which i believe is in 2 partions, one is 30GB which is the filesystem currently in use for the ubuntu installation, this is showing up in "my computer" in ubuntu servers. However there is another 50GB somewhere that I believe is not in use and I cannot find it, how do I find this in ubuntu and format the partition so I can begin using it for an addional drive to store stuff on?

Thanks very much for your help in advance

droyden · 27 Oct 2009 at 11:10

in a root terminal window: fdisk -l

DJMK4 · 27 Oct 2009 at 12:27

ok, i done the above, and its showing as;

Disk /dev/sda: 80.0 GB, 80026361856 bytes
255 heads, 63 sectors/track, 9729 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0xe2e8cc58

Device Boot Start End Blocks Id System
/dev/sda1 * 1 9698 77899153+ 8e Linux LVM
/dev/sda2 9699 9729 249007+ 5 Extended
/dev/sda5 9699 9729 248976 83 Linux

however i can only see one filesystem in 'my computer' which totals to 26gb.

there is a 2nd parition there which is not formatted, i cant seem to reveal or format this

droyden · 27 Oct 2009 at 12:37

can you give me a 'df' aswell looks like sda5 is the one you are seeing but not sure what the lvm is being used for

DJMK4 · 27 Oct 2009 at 12:54

droyden · 27 Oct 2009 at 12:59

sorry same as above, in a terminal window just type: df
it will show which file systems are mounted where

DJMK4 · 27 Oct 2009 at 13:03

droyden · 27 Oct 2009 at 13:47

hmm, it doesnt make sense.
In a root prompt can you try: parted -l

droyden · 27 Oct 2009 at 13:47

if that command fails, run: apt-get install parted -y

DJMK4 · 27 Oct 2009 at 13:51

droyden · 27 Oct 2009 at 14:03

OK, so it recognises the fact you have 80GB, but for some reason the lvm only has 28gb, can you run this as root: pvscan

DJMK4 · 27 Oct 2009 at 14:11

DJMK4 · 27 Oct 2009 at 14:14

droyden · 27 Oct 2009 at 14:28

DJMK4 said:
srv1:~$ sudo pvscan
[sudo] password for darren:
File descriptor 5 left open
PV /dev/sda1 VG lvm2 [74.29 GB / 46.35 GB free]
Total: 1 [74.29 GB] / in use: 1 [74.29 GB] / in no VG: 0 [0 ]
:~$

46GB free space

What filesystem are you using? Can do you: mount |

DJMK4 · 27 Oct 2009 at 14:30

ill try this now

DJMK4 · 27 Oct 2009 at 14:40

/dev/mapper/rv-1root on / type ext3 (rw,relatime,errors)

droyden · 27 Oct 2009 at 14:50

OK. <insert disclaimer about backing up any important data>

Lets resize as root (or using sudo):

lvextend -L+46G /dev/mapper/srv-1root

It should hopefully say something about it being now ~70gb.

Now (again as root/sudo):

resize2fs /dev/mapper/morandasrv-1root

You should be able to do this on the fly, but again insert disclaimer here.

DJMK4 · 27 Oct 2009 at 14:55

ok, done that, now I have a total filesystem capacity of 71.6GB

Thanks.

This seems to be in one filesystem (if you think about how windows works, you have a C: Partion, then more often or not, most people have a seperate D: partition for data). This is what I am trying to achieve.

Thanks

droyden · 27 Oct 2009 at 15:07

Oh, right. I guess you could do that aswell, although you will need to resize the lvm again and then create another volume group. There isnt much advantage to having it on an alternative partition unless you plan to reinstall allot and therefor keep your data seperate