Re: RAID5 fill up?

[Luca Berra <bluca@comedia.it>]

On Fri, Sep 08, 2006 at 02:26:31PM +0200, Lars Schimmer wrote:
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>Michael Tokarev wrote:
>> Lars Schimmer wrote:
>>> Hi!
>>>
>>> I´ve got a software RAiD5 with 6 250GB HDs.
>>> Now I changed one disk after another to a 400GB HD and resynced the
>>> raid5 after each change.
>>> Now the RAID5 has got 6 400GB HDs and still uses only 6*250GB space.
>>> How can I grow the md0 device to use 6*400GB?
>> 
>> mdadm --grow is your friend.
>
>Oh, damn, right. I was focussed on --grow to add a new HD to the RAID....
>But isn´t there a switch to grow to max possible value?
>Do I always have to search for the biggest value and type it in by hand?
man mdadm
....
       -z, --size=
....
              This value can be set with --grow for RAID level 1/4/5/6. If the
              array  was created with a size smaller than the currently active
              drives, the extra space can be accessed using --grow.  The  size
              can  be given as max which means to choose the largest size that
              fits on all current drives.


-- 
Luca Berra -- bluca@comedia.it
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