LinuxQuestions.org
Visit Jeremy's Blog.
Go Back   LinuxQuestions.org > Forums > Linux Forums > Linux - Software
User Name
Password
Linux - Software This forum is for Software issues.
Having a problem installing a new program? Want to know which application is best for the job? Post your question in this forum.

Notices

Reply
 
Search this Thread
Old 09-16-2007, 06:20 PM   #1
ruzzed
LQ Newbie
 
Registered: Sep 2007
Posts: 2

Rep: Reputation: 0
luks cryptsetup and lvm question


I have an lvm logical volume that is encrypted with LUKS cryptsetup. My question is that if a extend the lvm volume will it break luks? from what i understand luks does not encrypt the whole disk but instead keeps some information at the beginning of the partition and then encrypts/decrypts data as you read/write from the drive. If this is the case then I could extend the partition without breaking LUKs and also have the new data be encrypted also.

Will this work or will extending the logical volume break luks/cryptsetup?

thanks
 
Old 09-16-2007, 06:52 PM   #2
almatic
Member
 
Registered: Mar 2007
Distribution: Debian
Posts: 547

Rep: Reputation: 67
this will work without problem. The only part that needs to remain unencrypted is the /boot partition.
 
Old 09-16-2007, 07:04 PM   #3
ruzzed
LQ Newbie
 
Registered: Sep 2007
Posts: 2

Original Poster
Rep: Reputation: 0
ok so just extend the parition then resize as normal and cryptsetup will not have a problem remounting it and encrypting the data on the new space?

Things like this show me the the true power of linux x)
 
Old 09-16-2007, 07:21 PM   #4
almatic
Member
 
Registered: Mar 2007
Distribution: Debian
Posts: 547

Rep: Reputation: 67
Quote:
Originally Posted by ruzzed View Post
ok so just extend the parition then resize as normal and cryptsetup will not have a problem remounting it and encrypting the data on the new space?

Things like this show me the the true power of linux x)
yes, you resize as normal with lvextend or whatever, then encrypt the 'new space' with cryptsetup (cryptsetup resize /dev/mapper....).
 
  


Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
LUKS automation script jippo Linux - Security 6 01-12-2008 12:56 AM
cryptsetup+LUKS: security concept feasible? furryspider Linux - Security 3 08-11-2007 04:10 AM
cryptsetup-luks question nomb Linux - Software 4 06-14-2007 10:22 AM
cryptsetup-luks error flying-tuxman Linux - Security 2 11-20-2006 11:08 AM
dmcrypt+luks - Benchmarks ddaas Linux - Security 0 05-24-2006 08:07 AM


All times are GMT -5. The time now is 12:29 PM.

Main Menu
My LQ
Write for LQ
LinuxQuestions.org is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
Syndicate
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
identi.ca: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration