read_efi_hdr: physio failed

[ashisl]

Dear Team,
I am getting the below error in my hp-ux box.
and model :ia64 hp superdome server SD64B
it is connected to Symmetrix box.
please help
Jan 3 18:31:01 itdbp1db vmunix: 12/0/13/1/0.11.64.0.1.4 tgt
Jan 3 18:31:01 itdbp1db vmunix: 12/0/13/1/0.11.64.0.1.4.0 sdisk
Jan 3 18:31:01 itdbp1db vmunix: 12/0/13/1/0.11.64.0.1.4.1 sdisk
Jan 3 18:31:05 itdbp1db vmunix: 12/0/14/1/0.10.64.0.1.4 tgt
Jan 3 18:31:05 itdbp1db vmunix: 12/0/14/1/0.10.64.0.1.4.0 sdisk
Jan 3 18:31:05 itdbp1db vmunix: 12/0/14/1/0.10.64.0.1.4.1 sdisk
Jan 3 18:31:57 itdbp1db vmunix: DIAGNOSTIC SYSTEM WARNING:
Jan 3 18:31:57 itdbp1db vmunix: The diagnostic logging facility is no longer receiving excessive
Jan 3 18:31:57 itdbp1db vmunix: errors from the I/O subsystem. 276 I/O error entries were lost.
Jan 3 18:32:25 itdbp1db vmunix: read_efi_hdr: physio failed
Jan 3 18:33:21 itdbp1db vmunix: read_efi_hdr: physio failed
Jan 3 18:34:19 itdbp1db vmunix: read_efi_hdr: physio failed
Jan 3 18:37:43 itdbp1db sshd[23015]: Received disconnect from 172.31.3.153: 11: disconnected by user
Jan 3 18:35:16 itdbp1db vmunix: read_efi_hdr: physio failed