/dev/sda: read failed after 0 of 4096 at 0: Input/output error
I have installed RHEL AS 4 update 5 on a HP DL740 server and presented 1024MB from the SAN (EVA3000) to the server.
The server has two Qlogic HBA cards installed with
# less /proc/scsi/qla2xxx/0
QLogic PCI to Fibre Channel Host Adapter for QLA2340:
Firmware version 3.03.19 IPX, Driver version 8.01.07.25
BIOS version 1.45
I am seeing a lot of device I/O errors for sda. See below.
How do I fix these errors?
[root@megaclite osinst]# pvscan
/dev/sda: read failed after 0 of 4096 at 0: Input/output error
/dev/sda: read failed after 0 of 4096 at 1099511562240: Input/output error
/dev/sda: read failed after 0 of 4096 at 0: Input/output error
/dev/sdd: read failed after 0 of 4096 at 0: Input/output error
/dev/sdd: read failed after 0 of 4096 at 1099511562240: Input/output error
/dev/sdd: read failed after 0 of 4096 at 0: Input/output error
PV /dev/cciss/c0d0p2 VG vg_os lvm2 [67.72 GB / 29.72 GB free]
Total: 1 [67.72 GB] / in use: 1 [67.72 GB] / in no VG: 0 [0 ]
[root@megaclite osinst]#
cat: /dev/sda: Input/output error
[root@megaclite osinst]#
[root@megaclite osinst]# tail /var/log/messages
Apr 3 12:10:13 megaclite kernel: Buffer I/O error on device sda, logical block 9
Apr 3 12:10:13 megaclite kernel: Buffer I/O error on device sda, logical block 10
Apr 3 12:10:13 megaclite kernel: Buffer I/O error on device sda, logical block 11
Apr 3 12:10:13 megaclite kernel: Buffer I/O error on device sda, logical block 12
Apr 3 12:10:13 megaclite kernel: Buffer I/O error on device sda, logical block 13
Apr 3 12:10:13 megaclite kernel: Buffer I/O error on device sda, logical block 14
Apr 3 12:10:13 megaclite kernel: Buffer I/O error on device sda, logical block 15
Apr 3 12:10:13 megaclite kernel: Device sda not ready.
Apr 3 12:10:13 megaclite kernel: end_request: I/O error, dev sda, sector 0
Apr 3 12:10:13 megaclite kernel: Buffer I/O error on device sda, logical block 0
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