On Wed, Oct 26, 2005 at 11:26:47PM -0500, Korey Fort wrote: > As far as I know if you lose a disk in an LVM dies you're SOL. If you
Untrue, you only lose everything if it is the first drive (Unless something really odd happens). I've tested just pulling a drive and shrinking the lvm and it did just fine, but I did lose data that was on the pulled drive. A few months ago I wrote several e-mails to the list explaining how to build LVM in a way that you have a better chance of recovering if you have problems. Raid to several of us who run TB+ LVM's for a myth box is a dumb idea. I've been through a number of failed drives and my current setup is very functional in getting around quite a few types of failing drives (Note failing, not failed) with little or no data loss. In short, use reiserFS (Not reiser4) as reiserFS is the best choice of FS that supports shrinking (Which you'll want if you don't have an extra drive atleast as large as the largest disk, sitting around.) Don't do stripping, there's no reason too for Myth unless you have 15 HD tuners and are streaming to 15+ frontends. Tarball your root fs (Mine is 4GB) every month or so and put it on another system, just incase the main disk goes out (You still have a chance to recover files on other drives if you do this often, plus you can just untar your root fs using a rescue CD on a new drive) I've used raid 0, 1 and 5 at points in the past with my mythboxes, and it was all a waste of time in my opinion. The only safe way to note lose data is store it offline. I've had power supplies go back on software raid systems for work and fry 2-8 drives at once -- Raid 5 is no match for fried hardware that occurs at the same time. In my opinion, buying better hardware is much cheaper than spending time tring to handle when it happens, and when it happens you restore from offline copies. I've gone through 5 Maxtor 200gb drives in the last 3 years, I used to think they were good but they're now junk. The only brand I trust is Seagate now. Their 5 yr warranty pays for itself if you have several drives that fail all the time, most all HD warranties are 1 yr, most drives I've had last 1.75 years average. My setup is 4x200GB 1x250GB 1x300GB, Hopefully in the next few months myth will support storing to multiple directories, which would remove the need for LVM or having to worry about losing anything but what was on that drive. --Brandon
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