Hi,
I want to expand an existing root array with an SSD. For that purpose I
try to set firstly 'write-behind' on that array. Afterwards I will add
the SSD, remove the HDs and re-add them with 'write-mostly'. On that
array is the root filesystem, therefore stopping is no option. In
>/home/kraush/work/mdadm/mdadm< is the latest mdadm version from git.
I tried:
-----------------------------------------------------------------------
root@elefant:/home/kraush/work/mdadm/mdadm# ./mdadm --manage
--write-behind=4096 /dev/md4
mdadm: :option --write-behind not valid in manage mode
root@elefant:/home/kraush/work/mdadm/mdadm# ./mdadm --grow
--write-behind=4096 /dev/md4
mdadm: no changes to --grow
-----------------------------------------------------------------------
What is the correct syntax?
Regards, Hans
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