Re: problem growing raid-1

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On Sun, Feb 1, 2009 at 1:56 PM, Richard Scobie <richard@xxxxxxxxxxx> wrote:
> Troy Cauble wrote:
>>
>> I want to replace both disks in a RAID-1 with larger ones using the
>> instructions here:
>>
>> http://linux-raid.osdl.org/index.php/Growing#Extending_an_existing_RAID_array
>>
>> It looks straightforward: mdadm -f, mdmadm -r, swap a drive, etc., etc.
>>
>> Except if I -f & -r a drive, I won't know which physical drive to pull.
>> (And I have no spare SATA ports.)
>
> smartctl -a -d ata /dev/sdx
>
> will tell you the serial number of the drive, which then lets you shutdown,
> identify and remove the correct one.
>
> Regards,
>
> Richard

Thanks,

Since my original post, I found out about getting the serial number
via smartctl or hdparm.

But before I start failing and removing drives, I'd like to understand
why my set up didn't handle a physically removed drive.  Because
if that happens after the -f & -r, then I'm really stuck.

Thanks,
-troy
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