i just set up my first gmirror raid1, and... it was really simple.
too
simple. "ok... what did i skip or do wrong?", was my first thought.
i follow the doc from onlamp.com:
http://www.onlamp.com/pub/a/bsd/2005/11/10/FreeBSD_Basics.html?page=1
i did have one giant deviation tho, and im wondering if it really
makes a
difference. the article depicts creating the gmirror immediately
following
initial operating system install, but i did my example on a fully
functioning
system. other than that, i have 2 identical disks, and things seem
to be
working:
castor# gmirror status
Name Status Components
mirror/gm0 DEGRADED ad0
ad1 (33%)
im sure im seeing less than the best performance since im using but
a single
ide channel, but other than that, is it feasible to insert an
identical
disk,
and setup the gmirror at anytime a freebsd'er likes?
also, the doc didnt mention it, but if you do use to differing disk
sizes,
obviously the smaller one should be ad0? and other than that, is
there any
difference in setting up gmirror if the second disk is larger?
cheers,
jonathan
The surest way to test your raid is to unplug the IDE cable to one
drive while the system is running and see if it still works. Plug it
back in and rebuild the drive. Do the same for the other drive.
Setting up gmirror on a new system is straight forward; trying to set
it up on a system that can't be taken down for a day can be a major
headache.
I would like to stress that a mirrored RAID setup is no substitute
for a solid backup plan. If there is a data error, gmirror will
faithfully replicate that error on the other drive. You may not find
out that a drive has failed until both drives fail especially if
you're not keeping a close eye on your daily reports, so a backup is
essential.
James Riendeau
MMI Computer Support Technician
1300 University Ave
Rm. 436, Dept. of MedMicro
Madison, WI 53706
_______________________________________________
freebsd-questions@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-questions
To unsubscribe, send any mail to "[EMAIL PROTECTED]"
