Try to clone software RAID1 - problems
i try to clone my software raid system based on two discs - slackware64 14.1
there is thre partitions - /sda1 | sdb1 as / and as md1
sda2 | sdb2 as swap and md2
sda3 | sdb3 as /secondary and md3
my idea to clone that raid system with all data is add to system third physical disc ( sdc), boot up system, and do:
sfdisk -d /dev/sda |sfdisk /dev/sdc : done, ok. partition table copied.
now i try to do
mdadm /dev/md1 --add /dev/sdc1 : there i got problem - got message
mdadm: Cannot open /dev/sdc1: device or resource busy
it is even not mounted. any ideas?
PS after that i plan to do mdadm -G /dev/md1 -n3 , wait to finish syncing, and then mdadm -f /dev/sdc1 and mdadm -r /dev/sdc1.
after that, i hope, i can put that removed sdc disk as primary in new system, boot from it, add new disk, syncing, and get working copy of my first RAID1...?