Re: gmirror and the UFS file systems
- From: Mel <fbsd.questions@xxxxxxxxxxxxxxxxxxxx>
- Date: Fri, 28 Nov 2008 18:29:55 +0100
On Friday 28 November 2008 18:08:19 Andrew Falanga wrote:
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?
I've converted UFS filesystems with just the base install and a few ports over
to gmirror many times and no problem.
I guess the question can best be paraphrased as:
"If I cross a street in a residential area at 4am in the morning, will I get
hit by a car?"
Also, gmirror create will tell you if the last sector contains data, just like
a driver would honk his horn.
--
Mel
Problem with today's modular software: they start with the modules
and never get to the software part.
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