Re: Auto Rebuild on hot-plug

[John Robinson <john.robinson@anonymous.org.uk>]

On 29/03/2010 19:57, Doug Ledford wrote:
> On 03/29/2010 02:36 PM, John Robinson wrote:
[...]
>> Yes, but do create the partition(s), boot sector, etc and set up the
>> spare(s).
> 
> Really, we should never have to do this in the situation I listed: aka
> no degraded arrays exist.  This implies that if you had a raid1 /boot
> array, that it's still intact.  So partitioning and setting up boot
> loaders doesn't make sense as the new disk isn't going in to replace
> anything.  You *might* want to add it to the raid1 /boot, but we don't
> know that so doing things automatically doesn't make sense.

Actually I've just recently had the scenario where it would have made 
perfect sense. I hooked up the RAID chassis SATA[0-4] ports to the RAID 
chassis and put 3 drives in the first 3 slots. Actually it turned out 
I'd wired it up R-L not L-R so if I'd added a new drive in one of the 
two right-hand slots it would have turned up as sda on the next boot. 
OK, to some extent that's me being stupid, but at the same time I 
correctly hooked up the first 5 SATA ports to the hot-swap chassis and 
would want them considered the same group etc.

Cheers,

John.