gmirror and the UFS file systems

Andrew Falanga af300wsm at gmail.com
Fri Nov 28 09:10:00 PST 2008


Hi,

I'm getting ready to move forward on enabling gmirror on my churches website 
server (FreeBSD 7.0-RELEASE p4).  I used defaults during the install (most 
importantly for this, the file system defaults).  I've read in the manual 
pages that the data for the mirror is contained in the last sector of the 
drive/partitions.  So, I want to mirror the entire drive (ad4) to the second 
drive (ad5).  This server doesn't yet have much data at all.  I'm wondering 
if I turn on this mirror, will anything important be overwritten in the last 
sector?

Andy


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