I have had a system panicking when running the mentioned below configuration: RedHat RHEL 4 Update 6 (4.6) 64bit (x86_64) Dell PowerEdge servers Oracle RAC 11g with Clusterware 11g EMC iSCSI storage EMC PowerPate Vote and Registry LUNs are accessible as raw devices Data files are accessible through ASM with libASM During reboots or shutdowns,…
I have demonstrated how to hot-add LUNs to a Linux system with Qlogic HBA. This has become irrelevant with the newer method, available for RHEL4 Update 3 and above. The new method is as follow: echo 1 > /sys/class/fc_host/host/issue_lip echo “- – -” > /sys/class/scsi_host/host/scan< Replace "<ID>" with your relevant HBA ID. Notice - due...
This is an interesting bug I have encountered: The output of an sssu command should look like this: EVA> DELETE STORAGE “Virtual DisksLinuxoracleSNAP_ORACLE” EVA> It still leaves the snapshot (SNAP_ORACLE in this case) visible, until the web interface is used to press on “Ok”. This happened to me on HP EVA with HP StorageWorks Command…
When a company is about to relocate to a new floor or a new building, that is the time when the little piles of dirt swept under the rug come back to hunt you. In several companies I have been to, I have stressed the need of an ordered environment. This is valid to networking…
HP MSA1000 is an entry-level disk storage capable of communicating via different types of interfaces, such as SCSI and FC, and can allow FC failover. This FC failover, however, is controller failover and not path failover. It means that if the primary controller fails entirely, the backup controller will “kick in”. However, if a multi-path…
cat /proc/scsi/qla2xxx/$Z” where Z represents the SCSI interface the Qlogic has taken for itself, you’ll get something like this: <Snip> . . </Snip> SCSI LUN Information: (Id:Lun) * – indicates lun is not registered with the OS. ( 0: 0): Total reqs 63185608, Pending reqs 0, flags 0x2, 0:0:81 00 Assuming you’ve just added the…
