Thanks for your reply.
I haven't tried yet to physically reboot it as I am trying to find if it will mess
further the ovirt installation on the other hosts and how the gluster will behave. Should
I stop the glusterd service on the other hosts? Should I put the whole cluster in global
maintenance?
The output on the screen of the host is full of repeating the following:
"device-mapper: thin: process_cell: dm_thin_find_block() failed: error= -5
blk_update_request: I/O error, dev dm-1, sector 390975192"