Using gparted I have added three identical partiions , flagged as "raid" , as RAID5.
For test purposes I copied 1st partition to 2nd and 3rd.'
Attempt to create md0 failed with following errors:
]qw@qw-desktop:~$ sudo mdadm --create --verbose /dev/md0 --level=raid5 --raid-devices=3 /dev/sda25 /dev/sda9 /dev/sda17
[sudo] password for qw:
mdadm: layout defaults to left-symmetric
mdadm: layout defaults to left-symmetric
mdadm: super1.x cannot open /dev/sda25: Device or resource busy
mdadm: ddf: Cannot use /dev/sda25: Device or resource busy
mdadm: Cannot use /dev/sda25: It is busy
mdadm: cannot open /dev/sda25: Device or resource busy
qw@qw-desktop:~$
Did I missed something or have a typo ?
For test purposes I copied 1st partition to 2nd and 3rd.'
Attempt to create md0 failed with following errors:
]qw@qw-desktop:~$ sudo mdadm --create --verbose /dev/md0 --level=raid5 --raid-devices=3 /dev/sda25 /dev/sda9 /dev/sda17
[sudo] password for qw:
mdadm: layout defaults to left-symmetric
mdadm: layout defaults to left-symmetric
mdadm: super1.x cannot open /dev/sda25: Device or resource busy
mdadm: ddf: Cannot use /dev/sda25: Device or resource busy
mdadm: Cannot use /dev/sda25: It is busy
mdadm: cannot open /dev/sda25: Device or resource busy
qw@qw-desktop:~$
Did I missed something or have a typo ?
