Improve company productivity with a Business Account.Sign Up

x
  • Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 1123
  • Last Modified:

LVM & device not found

I have an extra hard disk in my server that was formatted with extfs3 and mounted in the filesystem.  The drive has nothing on it and I'm not learning about setting up LVM partitions.  So I unmounted the partition /dev/sda1 and ran the command "pvcreate /dev/sda" but it tells me "Device /dev/sda not found".  Can't I just put the whole drive under LVM instead of just a partition?

0
phasevar
Asked:
phasevar
1 Solution
 
q_shakurCommented:
>>Can't I just put the whole drive under LVM instead of just a partition?<<
yes you can,
but first you have to know that using LVM assumes that the disk or disks you will be using do not have a formatted partition. In Linux you would use the fdisk to remove the partition, note that this thing will remove all the data, in your case there is nothing to lose your HD is empty and you dont use it at all.

next to use the whole disk in LVM, you can do this command :
# dd if=/dev/zero of=/dev/sda bs=1K count=1
see /dev/sda --> its your HD, be sure its the HD that you want to use, the above command will erase the partition table by zeroing the fist sector.
then type this command :
# blockdev --rereadpt /dev/sda
this will call block device ioctls with reread partition table for your /dev/sda HD

now as i think every thing is ok you can run the command :
# pvcreate /dev/sda
now should be no problem so you can continue by vgcreate, lvcreate ...
0
 
phasevarAuthor Commented:
Thanks!
0
Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

Join & Write a Comment

Featured Post

Free Tool: ZipGrep

ZipGrep is a utility that can list and search zip (.war, .ear, .jar, etc) archives for text patterns, without the need to extract the archive's contents.

One of a set of tools we're offering as a way to say thank you for being a part of the community.

Tackle projects and never again get stuck behind a technical roadblock.
Join Now