Dirk Jagdmann wrote:
Hello experts,
I have a raid1 array with two drives working. It /dev/md0 built from
/dev/hda and /dev/hdb. Now I'd like to split it into two array with
one drive each (and then later add spares to my two arrays again). I
know that I can remove one drive from the array with: mdadm /dev/md0
-f /dev/hdb -r /dev/hdb , however I'm not sure what the superblock of
/dev/hdb now contains and how I could use the contents of /dev/hdb as
the starting point for my new /dev/md1 array? I did not find anything
in the manpage of mdadm which would provide me an automatic split.
So what are your advises?
The fast way (not redundant):
You can mark hdb as failed, then remove it. Then you can create a new
array using hdb and a missing device.
The safe way:
get your additional drives, call then hdc and hdd just for discussion.
add hdc to the existing array and let it rebuild, then mark hdb as
failed and remove. Create a new array from hdb and hdd.
I'm sure someone will tell me if I left out a step.
--
bill davidsen <davidsen@xxxxxxx>
CTO TMR Associates, Inc
Doing interesting things with small computers since 1979
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