[ubuntu-uk] Partitioning

Sun Feb 7 21:56:04 UTC 2016

Well something happened if not what was desired!  But no twisted knickers!

I booted from a Ubuntu liveCD and then CTRL-ALT-F1 to get to command prompt
and ran all commands as sudo.

I scribbled down outputs following many steps/commands you gave but forgive
me  if I cannot fully transcribe to here - my eyesight is so poor.
STEP 1
No outputs from 1 to 3 written down but all seemed within order (question
though - should I have been typing "5" rather than "3" as per your
instruction?)  At 4. when pressing "w" the following outputs were given:-
The partition table has been changed.
Calling ioctl() to re-read partition table.
WARNING: Re-reading the partition table failed with error 16: Device or
resource busy.
The kernal still uses the old table.
The new table will be used at the next re-boot or after you run
partprobe(8) or kpartx(8)
Syncing disks.

After step 2 the following was displayed:-
Physical Volume "/dev/sda5" changed
1 physical volume(s)  resized/0 physical volume(s) not resized

After step 3 the following was displayed:-
New size (13736 extents) matches existing size (137?6 extents)

After step 4 the following was displayed:-
The file system is ???????? 14065664 blocks long or nothing to do!

The fsck command seemed ok and just reported 387877/3522560 file
4976509/14065664 blocks

I re-booted - seemed OK - but see the following outputs of fdisk -l ,
pvdisplay and parted -l

sudo fdisk -l

Disk /dev/sda: 120.0 GB, 120034123776 bytes

255 heads, 63 sectors/track, 14593 cylinders, total 234441648 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: 0x0003df66

Device Boot Start End Blocks Id System

/dev/sda1 * 2048 499711 248832 83 Linux

/dev/sda2 501758 234440703 116969473 5 Extended

/dev/sda3 499712 501757 1023 8e Linux LVM

/dev/sda5 501760 117209087 58353664 8e Linux LVM

Partition table entries are not in disk order

Disk /dev/mapper/ubuntu--vg-root: 57.6 GB, 57612959744 bytes

255 heads, 63 sectors/track, 7004 cylinders, total 112525312 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: 2139 MB, 2139095040 bytes

255 heads, 63 sectors/track, 260 cylinders, total 4177920 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

sudo pvdisplay

--- Physical volume ---

PV Name /dev/sda5

VG Name ubuntu-vg

PV Size 55.65 GiB / not usable 0

Allocatable yes (but full)

PE Size 4.00 MiB

Total PE 14246

Free PE 0

Allocated PE 14246

PV UUID tXWgOP-Ams3-ks9R-4UdZ-Q0C2-sr2r-krRnaR

$ sudo parted -l

Model: ATA TOSHIBA MK1255GS (scsi)

Disk /dev/sda: 120GB

Sector size (logical/physical): 512B/512B

Partition Table: msdos

Number Start End Size Type File system Flags

1 1049kB 256MB 255MB primary ext2 boot

3 256MB 257MB 1048kB primary lvm

2 257MB 120GB 120GB extended

5 257MB 60.0GB 59.8GB logical lvm

Model: Linux device-mapper (linear) (dm)

Disk /dev/mapper/ubuntu--vg-swap_1: 2139MB

Sector size (logical/physical): 512B/512B

Partition Table: loop

Number Start End Size File system Flags

1 0.00B 2139MB 2139MB linux-swap(v1)

Model: Linux device-mapper (linear) (dm)

Disk /dev/mapper/ubuntu--vg-root: 57.6GB

Sector size (logical/physical): 512B/512B

Partition Table: loop

Number Start End Size File system Flags

1 0.00B 57.6GB 57.6GB ext4

I seem to have gained another LVM partition :)
/dev/sda3 and note the 8e ID

The pvdisplay output now shows against PV size "not usable 0" Before it
said "not usable 2.00 MiB

The output from parted -l differs insofar as the additional partition 3 is
shown.

sorry, for this lengthy post but I thought it best to be as comprehensive
as possible.

Would be very grateful if you could plot a way ahead for me.
Thanks
DaveG

On 7 February 2016 at 17:07, Daniel Llewellyn <diddledan at gmail.com> wrote:

>
>
> On 7 February 2016 at 16:59, David Goldsbrough <daveg at boavon.plus.com>
> wrote:
>
>> That sounds brilliant Daniel!
>> Excuse the noob questions:-
>> I guess I need to boot from a live CD to do this?
>>  Will those steps destroy my data?  I appreciate a backup is always wise
>> - its the restore that scares me!
>> Bear in mind I have the original 60GB disk and have done very little on
>> my new disk and I suppose I would not cry over any data loss during an fdisk
>> Thanks DaveG
>>
>
> These steps should leave your data intact. You can probably do the process
> from your normal system, but it might be better to do it via a live-cd so
> that the root filesystem is not mounted and therefore less likely to get
> its knickers in a twist (technical term :-p)
>
> --
> Regards,
>     The Honeymonster Daniel Llewellyn
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.ubuntu.com/archives/ubuntu-uk/attachments/20160207/c089d81d/attachment.html>