[ubuntu-uk] Partitioning

[Daniel Llewellyn]

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 
> <mailto:diddledan at gmail.com>> wrote:
>
>
>
>     On 8 February 2016 at 22:32, David Goldsbrough
>     <daveg at boavon.plus.com <mailto: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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