[ale] Software RAID1 rebuild after HDD failure (How to do?)

[Christopher Fowler]

On Sat, 2006-07-01 at 02:57 -0400, Jim Popovitch wrote:
> An alternative way to test is to d/l VMWare server (it's free, but
> still 
> pre-release status) and install it on your desktop/laptop.  Then
> connect 
> to it from the same system (or another one) and create a virtual 
> machine.  Edit the virtual machine's settings to give it two drives, 
> then install CentOS or whatever distro is at the remote site.  Set it
> up 
> with full raid working, then shutdown the virtual machine and remove
> one 
> of the drives from the config.  Then add a new (third) drive, and use
> it 
> as instead of the removed one.  Assuming that you have the time to do 
> this. ;-)

I did this on a real test machine and then had to lookup commands to
make it work again.  One thing I did learn was to make sure I installed
grub onto both drives.  If the first one failed then the 2nd would not
boot unless grub was installed.

My biggest problem was rebuild.  If the machine rebooted many times
during a rebuild eventually all data was lost and a reformat was
required.