disk layout

Verde Denim tdldev at gmail.com
Sun Sep 18 02:22:12 UTC 2011

I have two 1 TB drives in my latest Ubuntu 11.04 system.
I have a 500GB drive as the 'main' OS and home drive, and I want to setup
the two additional drives as follows:

/dev/sdb is mirrored on /dev/sdc

On /dev/sdb,I'd like to have three logical volumes -

so that if I need to grow one or more of these, I can add additional discs.

I setup the RAID1 type on both discs, so that fdisk -l produces this -

/dev/sda: 500.1 Gb
/dev/sda1 *        1  58746 83 Linux
/dev/sda2    58746 60802   5 Extended
/dev/sda5    58746 60802  82 Linux swap / Solaris

/dev/sdb: 1000.2 GB
/dev/sdb1         1  121601 fd Linux raid autodetect

/dev/sdc: 1000.2 GB
/dev/sdc1         1  121601 fd Linux raid autodetect

If I setup the lvm's on /dev/sdb, won't this wipe the fd that currently
resides there?

Is there a way to accomplish both RAID1 and LVMs on this drive or am I just
doing something in the wrong way?

Thanks, as always for the input.


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