Swap partition not created on install

[Gordonbp531]

Fresh install of 14.04 on a Eee PC1001P.
I used the automatic install and chose to use LVM and encrypt the whole of the drive.
I've just noticed that the automatic install did NOT create a Swap partition.
I can't re-size the existing partition in GParted.
The specs of the machine are:
Processor
CPU Intel Atom N450 / 1.66 GHz dual core
Memory RAM 1 GB ( 1 x 1 GB )
160 GB HDD.
I shall be upgrading the RAM shortly to 2GB.
Here's what Disks shows:
https://drive.google.com/file/d/0B7c0iOOzxM3LUTNZWl9JZkliOGc/view?usp=sharing

https://drive.google.com/file/d/0B7c0iOOzxM3LUTNZWl9JZkliOGc/view?usp=sharing

Can anyone tell me what the 1.1 GB partition is, and do I need a Swap area?

[Bucky Ball]

Boot from an install USB/DVD, 'Try Ubuntu', get to a desktop, launch Gparted and try there. I know nothing about LVM so don't know if that's preventing it, but you may be trying to resize the partition Ubuntu is running from and that's not possible unless you're running a Live boot. ;)

The 1.1Gb looks like the /swap. Open Gparted and look.

[Gordonbp531]

Hi Bucky,
I should have mentioned I had alreadt tried that.
Booting from live USB, GParted won't allow me to re-size the partition, and doesn't even see the 1GB partition....

[fantab]

Post the output of:

sudo parted -l
sudo fdisk -l

[Gordonbp531]

Post the output of:

sudo parted -l
sudo fdisk -l

Sudo parted -l:

Disk /dev/sda: 160GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos

Number Start End Size Type File system Flags
1 1049kB 256MB 255MB primary ext2 boot
2 257MB 160GB 160GB extended
5 257MB 160GB 160GB logical


Error: /dev/mapper/ubuntu--vg-swap_1: unrecognised disk label

Model: Linux device-mapper (linear) (dm)
Disk /dev/mapper/ubuntu--vg-root: 159GB
Sector size (logical/physical): 512B/512B
Partition Table: loop

Number Start End Size File system Flags
1 0.00B 159GB 159GB ext4


Error: /dev/mapper/sda5_crypt: unrecognised disk label

sudo fdisk -l:

Disk /dev/sda: 160.0 GB, 160041885696 bytes
255 heads, 63 sectors/track, 19457 cylinders, total 312581808 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00064ffd

Device Boot Start End Blocks Id System
/dev/sda1 * 2048 499711 248832 83 Linux
/dev/sda2 501758 312580095 156039169 5 Extended
/dev/sda5 501760 312580095 156039168 83 Linux

Disk /dev/mapper/sda5_crypt: 159.8 GB, 159782010880 bytes
255 heads, 63 sectors/track, 19425 cylinders, total 312074240 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000

Disk /dev/mapper/sda5_crypt doesn't contain a valid partition table

Disk /dev/mapper/ubuntu--vg-root: 158.7 GB, 158712463360 bytes
255 heads, 63 sectors/track, 19295 cylinders, total 309985280 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000

Disk /dev/mapper/ubuntu--vg-root doesn't contain a valid partition table

Disk /dev/mapper/ubuntu--vg-swap_1: 1065 MB, 1065353216 bytes
255 heads, 63 sectors/track, 129 cylinders, total 2080768 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000

Disk /dev/mapper/ubuntu--vg-swap_1 doesn't contain a valid partition table

[oldfred]

LVM is an advanced partitioning that overlays the physical partitions with logical partitions. You an even span multiple drives. But it is more advanced, requires different tools to edit and if one partition fails you lose the entire thing.
Gparted does not work on LVM and will only see the underlying physical partitions.

LVM - Logical Volume Management.
Advantages/Disadvantages LVM Post #9
http://ubuntuforums.org/showthread.php?t=1586328
https://wiki.ubuntu.com/Lvm
https://help.ubuntu.com/community/UbuntuDesktopLVM
2014_02_22_Preparing Logical Volumes For Ubuntu Installations
http://members.iinet.net/~herman546/2014_02_22_Preparing%20Logical%20Volumes%20For%20U buntu%20Installations.html
Issues on very large 19TB LVM ext4 64 bit partition
http://ubuntuforums.org/showthread.php?t=2213785
lvm How-To info older:
http://ubuntuforums.org/showthread.php?t=141900
http://tldp.org/HOWTO/LVM-HOWTO/index.html
http://tldp.org/HOWTO/LVM-HOWTO/benefitsoflvmsmall.html
sudo apt-get install lvm2
sudo vgchange -ay
LVM gui tool:
http://www.howtogeek.com/127246/linux-sysadmin-how-to-manage-lvms-with-a-gui/
sudo apt-get install system-config-lvm

[Bucky Ball]

Gparted does not work on LVM and will only see the underlying physical partitions.



Now I know something about LVM. Thanks oldfred, I learn something everyday round here. ;)

[Gordonbp531]

Thanks for all that info - I think I'm going to do a re-install without LVM!

[Bucky Ball]

Might be a good idea. Unless you have a specific reason, unsure why LVM would come into the equation. But as I say, uneducated on that front ... ;)

Good luck and post a new thread with a descriptive title if you have any further issues with the re-install rather than tacking them on to this one. Will improve your chances of support.

PS: oldfred is a font of wisdom when it comes to this stuff, as can be plainly seen. ;)

[Gordonbp531]

Might be a good idea. Unless you have a specific reason, unsure why LVM would come into the equation.

This being a Netbook, which I take out and about, I need to encrypt the whole drive.
In the Install dialog, if you click on the option to encrypt the whole drive, LVM is automatically selected. You apparently cannot choose whole disk encryption without using LVM...

[Gordonbp531]

Using the LVM GUI tool to reduce the space in Root to give more space to the Swap area, I get the following error:

Logical volume is not mounted but is in use. Please close all applications using this device (eg iscsi)

The only application in use is LVM, and there's no process (AFAICS) named iscsi.....

[Bucky Ball]

You have marked this thread as solved. How did you fix the problem? Please share with the community. Thanks. ;)

[Gordonbp531]

You have marked this thread as solved.

Sorry, I'd forgotten I'd done that when I had decided to re-install. I've now decided NOT to re-install for the reason above re encryption.
So now I have a problem with the LVM tool...

[oldfred]

You should then start a new thread with LVM in title.
Then those who know about LVM may offer to help. It may be better to be in server sub-forum as LVM is more often used with servers.

I do not use encryption, but believe full drive with LVM does offer some advantages.
But you can do encryption of just /home or just encrypt the files or one partition with files that you are concerned about.

But any encryption adds complexity and requirements for better backup procedures as recovery from errors is not possible.