On Wed, Jul 8, 2009 at 1:05 PM, victor titus <<a href="mailto:svictor.titus@gmail.com">svictor.titus@gmail.com</a>> wrote: <div class="gmail_quote"><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> Hi All, Below are the messages found from the Log "/var/log/messages". Seems to be some problem with the release of NVRAM memory. Due to this the LVM in the cluster are not detected by the server, commands like lvdisplay, pvdisplay just show no output. ****************************************************************************** Jul 7 11:58:12 lxxxx kernel: QLogic Fibre Channel HBA Driver Jul 7 11:58:12 lxxxx kernel: ACPI: PCI Interrupt 0000:08:00.0[A] -> GSI 18 (level, high) -> IRQ 185 Jul 7 11:58:12 lxxxx kernel: qla2400 0000:08:00.0: Found an ISP2432, irq 185, iobase 0xffffff0000006000 Jul 7 11:58:12 lxxxx kernel: qla2400 0000:08:00.0: Configuring PCI space... Jul 7 11:58:12 lxxxx kernel: qla2400 0000:08:00.0: Configure NVRAM parameters... Jul 7 11:58:12 lxxxx kernel: qla2400 0000:08:00.0: Inconsistent NVRAM detected: checksum=0xd46cae00 id=I version=0x1. Jul 7 11:58:12 lxxxx kernel: qla2400 0000:08:00.0: Falling back to functioning (yet invalid -- WWPN) defaults. Jul 7 11:58:12 lxxxx kernel: qla2400 0000:08:00.0: Verifying loaded RISC code... Jul 7 11:58:12 lxxxx kernel: qla2400 0000:08:00.0: Allocated (64 KB) for EFT... Jul 7 11:58:12 lxxxx kernel: qla2400 0000:08:00.0: Allocated (1413 KB) for firmware dump... Jul 7 11:58:12 lxxxx kernel: qla2400 0000:08:00.0: Waiting for LIP to complete... Jul 7 11:58:12 lxxxx kernel: qla2400 0000:08:00.0: Cable is unplugged... Jul 7 11:58:12 lxxxx kernel: scsi0 : qla2xxx Jul 7 11:58:12 lxxx kernel: qla2400 0000:08:00.0: ********************************************************************************* </blockquote><div>Hi! It seems that your fibre connection is failing, or maybe the HBA, or the switch. Do you have a redundant path so the SAN? If so, have you configured multipath? Greetings, Juanra </div><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> Thanks, Victor -- Linux-cluster mailing list <a href="mailto:Linux-cluster@redhat.com">Linux-cluster@redhat.com</a> <a href="https://www.redhat.com/mailman/listinfo/linux-cluster" target="_blank">https://www.redhat.com/mailman/listinfo/linux-cluster</a> </blockquote></div>