The redhat-upgrade-tool provides a way to upgrade Red Hat Enterprise Linux 6 systems to Red Hat Enterprise Linux 7. The redhat-upgrade-tool command is a program to collect the information for upgrade and prepare the environment. It includes downloading kernel, and initial ram image, and packages.
Knowing devices WWN is necessary to define aliases during zone creation in SAN environments on SAN switches, you need to storage FC ports WWN as targets in each zone. So where you can find device’s FC ports information?
This new server virtualization management platform can be easily deployed to configure, monitor, and manage an Oracle Linux Kernel-based Virtual Machine (KVM) environment with enterprise-grade performance and support from Oracle. Red Hat did it and developed Red Hat Enterprise Virtualization Manager based on the open source oVirt project .
We are using HPE ProLiant servers in our virtual environment to delivering different services to our customers. VMware ESXi has been installed on all servers as Hypervisor. You know that each vendor has customized image that includes VMware ESXi, drivers and management tools. It seems, there is an issue on HPE Agentless Management (AMS) on latest ESXi image.
We had a disaster on one of our storage devices that some virtual machines were hosting by the storage. After recovering issue on the storage, the below log was on some ESXi hosts: ESXi-Server vmkwarning: cpu45:34354)WARNING: Fil3: 2469: Failed to reserve volume f530 28 1 5cde7257 f5e2aa1e 67208f12 f0f55d7c 0 0 0 0 0 0 0 The issue was happened when the hosts were trying to mount the affected datastores even after issue was recovered. Some of affected datastores wont mounted automatically after disaster. So we had to rescan all paths on ESXi servers or mount the datastores manually. Hope this post will help you to recover same issues faster. Further Reading ESXi Fails with “Corruption in dlmalloc” on HPE Server VMware ESXi Queue Depth – Overview, Configuration And Calculation
