On Tue, May 22, 2007 at 05:21:07PM -0700, centos@911networks.com enlightened us:
On Tue, 22 May 2007 16:53:32 -0700 Scott Silva ssilva@sgvwater.com wrote:
Which one would be better under the aspects of performance (CPU utilization, disk transfer rate, etc), data security and ability to recover from a disk crash?
Does LVM bring a performance penalty?
I don't think LVM brings any penalty.
That's because you have not tried to recover an LVM. I had one with Raid1 and when drive1 failed, Boot was on disk 0.
I was hoping to able to boot from disk 0 then to put a new disk next day... To make a short story even shorter, no go. I had to restore from a 3 days old backup.
LVMs are very convenient for adding new drive and making them larger. I don't know of a live-CD that supports LVMs.
Apparently you've never used the CentOS4 Live CD, then. I used it to recover data from an LVM on top of md disk just last week.
Matt