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The Problem With Linux Volume Management

I think I’m going to start a campaign, against Linux Volume Management being used in desktop Linux installations.

I recently fell foul of it’s charms, when I suffered a hard disk failure. One of the hard disks in my MythTV system failed, and so had to be replaced. However, I automatically assumed that the data that was available on the other hard disk would still be accessible, and so not everything was lost.

WRONG.

It turns out, that if one hard disk in a LVM configuration fails, then you cannot access the other hard disks. Unless of course, you enable the server grade mirroring system, which requires you to have another HDD where you can mirror the data to.

That, in my mind is completely stupid. How many desktop PCs are going to have that functionality available? Sure, it’s fine for servers and the like, where extra money is willing spent on tiered backup systems, but for Mr Joe Bloggs with his cheap desktop, it’s a no-no.

So, I’ve managed to get the hard disk replaced (it was still under warranty,) and I’ve managed to re-install MythDora, all the time fighting with the installation program to NOT use LVM (in the end, I had to let it create a partition layout, and then go back and delete it all and re-create it using ordinary partitions. I don’t think that this is the fault of MythDora, I’m laying the blame firmly with the Fedora/RedHat EL crowd for this one.

Whatever you do, don’t use LVM unless you know how to set it up properly, or you don’t mind losing the contents of all the hard disks in your system….

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