Hi Gianluca,
thanks for your reply.
I didn't do any previous step: the 3 servers are freshly installed.
The disk was wrong: I had to use /dev/md128. Replaced sdb with the correct one and redeployed, but the error was exactly the same. The disks are already initialized because I created the XFS filesystem on /dev/md128 before the deploy.
In /var/log/messages there is no error.
Hi,
Simone