[dm-crypt] dynamic growing volume

[dm-crypt] dynamic growing volume

[donotdisturb]

hi..

is it possible to create a dynamic growing crypted volume ?
i know that its possible with lvm and xfs..
but im not sure what happens if its crypted

thx

Re: [dm-crypt] dynamic growing volume

[Moji]

If you create LVM OVER encrypted LUKS partitions, you should be able to
use the LVM/FS commands to re-size a volume as you normally would.

This also breaks up the encryption by using different master keys for
each partition.

-MJ

donotdisturb@gmx.net wrote:
> hi..
> 
> is it possible to create a dynamic growing crypted volume ?
> i know that its possible with lvm and xfs..
> but im not sure what happens if its crypted
> 
> thx
> 
> _______________________________________________
> dm-crypt mailing list
> dm-crypt@saout.de
> http://www.saout.de/mailman/listinfo/dm-crypt
> 

Re: [dm-crypt] dynamic growing volume

[donotdisturb]

i need a pw for each user not one big crypted storage

M> If you create LVM OVER encrypted LUKS partitions, you should be able to
M> use the LVM/FS commands to re-size a volume as you normally would.

M> This also breaks up the encryption by using different master keys for
M> each partition.

M> -MJ

M> donotdisturb@gmx.net wrote:
>> hi..
>> 
>> is it possible to create a dynamic growing crypted volume ?
>> i know that its possible with lvm and xfs..
>> but im not sure what happens if its crypted
>> 
>> thx
>> 
>> _______________________________________________
>> dm-crypt mailing list
>> dm-crypt@saout.de
>> http://www.saout.de/mailman/listinfo/dm-crypt
>> 

Re: [dm-crypt] dynamic growing volume

[Milan Broz]

Moji wrote:
> If you create LVM OVER encrypted LUKS partitions, you should be able to
> use the LVM/FS commands to re-size a volume as you normally would.
> 
> This also breaks up the encryption by using different master keys for
> each partition.

You probably want to create LUKS over LV (LUKS over LVM) and after normal
LVM resize just issue cryptsetup resize.

(one day LVM will support manipulation with encrypted volumes directly)

>> is it possible to create a dynamic growing crypted volume ?
>> i know that its possible with lvm and xfs..
>> but im not sure what happens if its crypted

Milan
--
mbroz@redhat.com

Re: [dm-crypt] dynamic growing volume

[solarflow99]

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On Wed, Sep 9, 2009 at 2:58 PM, Milan Broz <mbroz@redhat.com> wrote:

> Moji wrote:
> > If you create LVM OVER encrypted LUKS partitions, you should be able to
> > use the LVM/FS commands to re-size a volume as you normally would.
> >
> > This also breaks up the encryption by using different master keys for
> > each partition.
>
> You probably want to create LUKS over LV (LUKS over LVM) and after normal
> LVM resize just issue cryptsetup resize.
>
> (one day LVM will support manipulation with encrypted volumes directly)
>
>
thats neat, I wonder how btrfs is going to affect this, it might make LVM
redundant?  BTW, thanks for the last message, I got things to work because
of your help, here's how I did it:

-cd /dev/mapper
- e2fsck -f luks-vg1-lvfiles
- resize2fs luks-vg1-lvfiles
- cryptsetup luksClose luks-vg1-lvfiles
- lvreduce -L -4G /dev/vg1/LVfiles
- cryptsetup lukeOpen /dev/vg1/LVfiles luks-vg1-lvfiles
- resize2fs luks-vg1-lvfiles

to resize the root LV, I just used the rescue CD but had to copy the LVM
commands on a USB drive since they dont seem to be included for some strange
reason.

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