i'm not a system administrator so i think that i made a big mistake!
we had a problem of storage distribution on VMs in the openstack private cloud.
So i took one VM to reduce the storage and i tried first to execute lvreduce to reduce the logical volume but it asks me to umount the lv before.
So i run umount <path-of-my-lv> -l
and after that i have not access to vms on ssh even when i rebooted it from the openstack dashboard.
I got this Error when i tried to connect using ssh as usual
Remote side unexpectedly closed network connection
any propositioin please ?
Thanks for advance
There is a bad entry on /etc/fstab so the VM doesn't boot anymore.
By commenting the bad line and restart the machine, it works again and after that you could correct the mounts and lvms.