[ubuntu-uk] Partitioning

[David Goldsbrough]

Thanks Daniel.
 I have tried sudo lvextend -l+100%FREE /dev/mapper/ubuntu--vg-root (I
think we did try this before).
I received the following output:-
New size (13736 extents matches existing size (13736 extents) Run 'lvexted
--help' for more information.  I did do this but it still left me clueless!
I thought it best not to submit your second command until reporting back.
Outputs from fdisk -l, pvdisplay and parted -l remain as previously
reported.


On 18 February 2016 at 19:32, Daniel Llewellyn <diddledan at gmail.com> wrote:

> Hi David,
>
> Sorry for the delay in replying.
>
> I still believe you can get your 120GB drive how you want it, so all is
> not lost yet.
>
> It looks like your LVM partition is the correct size now, but the volume
> with your root filesystem is still the old size. This suggests that you
> need to run:
>
> lvextend -l+100%FREE /dev/mapper/ubuntu--vg-root
>
> the first letter of lvextend is lower-case "L".
> the second argument to lvextend is: "dash", lower-case "L", "plus"-symbol,
> one, zero, zero, percentage-symbol, and finally the word "FREE" in
> upper-case; all without spaces between.
>
> then run:
>
> resize2fs /dev/mapper/ubuntu--vg-root
>
> It is probably best to do these in a cd/dvd-booted live session to be sure
> it's as safe as possible.
>
>
> On 09/02/2016 14:53, David Goldsbrough wrote:
>
> I am going to spare you Daniel all the details and other readers of this
> post.
> Briefly I had documented everything and that is now lost for reasons I can
> only guess. I had chosen your Option 2 without success and then Option 1
> with I hope is success.  I did though suffer errors on re-boot and so
> attempted another re-boot - this time it reported fsck issues which I
> answered F to and all seemed fine.
> I then rebooted from the 60GB USB drive to grab the documentation and
> started up Firefox to get at my Google drve.  Firefox started as if this
> was the first time it had ever started - weird and accessing the google
> drive and trying to find my documentation file - it was not there! Odd!
>
> So I reboted into my 120GB and again Firefox starts as if brand new -
> bookmarks and history have gone.  Cpuld dd have done that?
>
> But forget that I think I now have a full 120GB system but am starting to
> have some doubts over some of the files.  What command should I run to give
> me confidence I have a full 120GB?
> Thanks
> DaveG
>
> On 8 February 2016 at 22:49, Daniel Llewellyn <diddledan at gmail.com> wrote:
>
>>
>>
>> On 8 February 2016 at 22:32, David Goldsbrough < <daveg at boavon.plus.com>
>> daveg at boavon.plus.com> wrote:
>>>
>>> $ 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
>>>  2      257MB   120GB  120GB  extended
>>>  5      258MB   120GB  120GB  logical                lvm
>>>
>>>
>>> Model:  Mass Storage Device (scsi)
>>> Disk /dev/sdb: 60.0GB
>>> 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   60.0GB  59.8GB  extended
>>>  5      257MB   60.0GB  59.8GB  logical                lvm
>>>
>>
>> OK, from the above read-out it looks like fdisk changed the start
>> position of your partition when you recreated it. We have two options as to
>> how to proceed:
>>
>>
>>    1. As you have your old LVM disk hooked-up you can reblow the data
>>    across to the new larger partition and then run the pvresize, lvextend and
>>    resize2fs again thereafter. To reblow the data use `dd if=/dev/sdb5
>>    of=/dev/sda5 bs=1m`.
>>    2. Alternatively you can try to recreate the lvm partition again with
>>    a start of 257M instead of the fdisk-chosen default 258M (it chose 258
>>    because that's "aligned" better for your SSD; but being 1MB further into
>>    the disk means that the lvm metadata is dangling unaddressable at 257MB)
>>    and as above rerun the pvresize, lvextend and resize2fs again.
>>
>>
>> --
>> Regards,
>>     The Honeymonster Daniel Llewellyn
>>
>
>
>
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