[mythtv-users] Linux software raid question

[Carl L. Gilbert]

On Tue, 2008-06-03 at 12:00 -0400, Dan Ritter wrote:
> On Tue, Jun 03, 2008 at 05:41:03PM +0200, Boleslaw Ciesielski wrote:
> > Matt Nelson wrote:
> > > On one of my mythtv backend servers I host my fileserver that stores all 
> > > of my media on two raid5 sets totaling 12 drives that are all attached 
> > > via sata.  These are all attached externally, and that is where my 
> > > question lies, if I connect these drives incorrectly will my raid sets 
> > > die, or does it not matter where they are connected since there is some 
> > > metadata that tells the linux software raid that it belongs to a certain 
> > > raid set?
> > 
> > Yes, Linux software RAID will work regardless of the drive order. Your 
> > only order concern is the boot drive.
> 
> Well, that's mostly true.
> 
> The filesystems will be mounted according to the instructions in
> /etc/fstab. If fstab specifies them by UUID or volume label,
> then they will always be mounted in the same location. 
> 
> If, however, you have chosen to mount them by their device
> names, it is possible that reboots with changed hardware
> configurations (even as little as booting with a USB stick or a
> memory card in a slot) can change the order. udev rules can
> mitigate that.
> 
> -dsr-
> 
Yes, exactly.  This is the problem I used to have.  Then I started using
labels.  I just installed Mandriva 2008 and noticed that its using
UUIDs.


dnoyeb