[CentOS] ISCSI target + LVM Problem

Hello,

I have a LVM with 2 ISCSI disk mounted. The partition started presents
problem such " i/o error". I unmounted the device, and restarted target
server in scsi, wich as having some problems. After that i mapped iscsi and
trying to mount partition again but:
When i run the pvdisplay i get the following erro:

read failed after 0 of 4096 at 0: Input/output error

And cannot mount partition.