On Tuesday October 9, [EMAIL PROTECTED] wrote:
> 
> Problems at step 4.: 'man mdadm' doesn't tell if it's possible to
> grow an array to a degraded array (non existant disc). Is it possible?

Why not experiment with loop devices on files and find out?

But yes:  you can grow to a degraded array providing you specify a
--backup-file.

However I don't recommend it.  I would never recommend having a
degraded array by design.  It should only ever happen due to a
failure, and should last only until you can get a replacement
rebuilt. 

Remember that a degraded raid5 has a greater risk of data loss than a
single drive.

> 
> 
> PS: the fact, that degraded array will be unsafe for the data is an
> intented motivating factor for buying next drive ;)

:-)

NeilBrown
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