[linux-lvm] lvreduce used before resizing file system, what now?

[linux-lvm] lvreduce used before resizing file system, what now?

[veleiro]

Hello,

I was following this guide 
https://help.ubuntu.com/community/ResizeEncryptedPartitions#Detailed_resizing_.2BAH4_Reducing_an_encrypted_partition 
on how to reduce the size of an lvm partition.  Its kind of confusing, 
so going from a ext4 420G partition to 390G partition, I did the steps 
in the wrong order:

sudo e2fsck -f /dev/mapper/ubuntu--vg-root
# worked
sudo lvreduce -L -30G /dev/ubuntu--vg/root
# data warning
sudo resize2fs -p /dev/mapper/ubuntu--vg-root 390g

i tried to undo this by
sudo resize2fs -p /dev/mapper/ubuntu--vg-root 420g # doesnt do anything, 
not enough blocks
sudo lvresize -l +30G /dev/ubuntu-vg/root #clearly didnt do anything or 
work either

Is there any procedures to get back to where i started at 420g OR to fix 
it for 390g?

Thanks!
veleiro

Re: [linux-lvm] lvreduce used before resizing file system, what now?

[veleiro]

Nevermind. Figured it out.  resizing to max available did the trick. I 
was lucky!

  sudo lvresize -l +100%FREE /dev/ubuntu-vg/root

On 2016-12-10 21:38, veleiro@openmailbox.org wrote:
> Hello,
> 
> I was following this guide
> https://help.ubuntu.com/community/ResizeEncryptedPartitions#Detailed_resizing_.2BAH4_Reducing_an_encrypted_partition
> on how to reduce the size of an lvm partition.  Its kind of confusing,
> so going from a ext4 420G partition to 390G partition, I did the steps
> in the wrong order:
> 
> sudo e2fsck -f /dev/mapper/ubuntu--vg-root
> # worked
> sudo lvreduce -L -30G /dev/ubuntu--vg/root
> # data warning
> sudo resize2fs -p /dev/mapper/ubuntu--vg-root 390g
> 
> i tried to undo this by
> sudo resize2fs -p /dev/mapper/ubuntu--vg-root 420g # doesnt do
> anything, not enough blocks
> sudo lvresize -l +30G /dev/ubuntu-vg/root #clearly didnt do anything
> or work either
> 
> Is there any procedures to get back to where i started at 420g OR to
> fix it for 390g?
> 
> Thanks!
> veleiro

Re: [linux-lvm] lvreduce used before resizing file system, what now?

[Zdenek Kabelac]

Dne 11.12.2016 v 04:12 veleiro@openmailbox.org napsal(a):
> Nevermind. Figured it out.  resizing to max available did the trick. I was lucky!
>
>  sudo lvresize -l +100%FREE /dev/ubuntu-vg/root
>
> On 2016-12-10 21:38, veleiro@openmailbox.org wrote:
>> Hello,
>>
>> I was following this guide
>> https://help.ubuntu.com/community/ResizeEncryptedPartitions#Detailed_resizing_.2BAH4_Reducing_an_encrypted_partition
>>

And next time you will try to follow some 'dated'  help pages - it's always 
good idea to check 'man' page as well.

If you would did that, you would know about:

lvreduce -r


Regards

Zdenek


PS: BOLD warnings with '!' are not there just for fun...