vmkfstools – command options
Inspiration for today’s article is a fantastic documentation of the vmkfstools founded here: https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.storage.doc/GUID-0AC9C948-4D0A-4634-99B8-E10CC09EFE47.html vmkfstools is a cli command you can find on every ESXi host. As with everything but you always need to be careful when using it because you can potentially easily delete or mess around with your …
Virtual System fails to start on ESXi with “no space left on the device” message.
In a very rare situation VM can fails to start because of the swap file issue. Basically, VMware philosophy is to maintain for each virtual machine the swap file. This file is being used while the ESXi memory contention. Hypervisor should always guarantee that your system will always be up …
vRealize Orchestrator for beginners and not only (part 2/2).
If you were following my guide „vRealize Orchestrator for beginners and not only (part 1/2)” as well as other guides available over the Internet, you already have running environment. Now, let’s connect vRealize Orchestrator to vCenter and deploy new workflow. If you will be willing to follow this guide to …
vRealize Orchestrator for beginners and not only (part 1/2).
VMware vRealize orchestrator is a fantastic tool to do so infinity number of tasks. Depends on the task you want to do orchestrator can be easy to use because of already created an provided with appliance ready to use workflows. If you want to achieve more, sometimes it can be …
Symptoms: virtual system cannot be powered off from the vCenter or ESXi UI.
Symptoms: virtual system cannot be poweredoff from the vCenter or ESXi ui console. Cause: So, you have just checked that there is no communication between vCenter or inside ESXi between services. From ESXi shell you are getting “connection failed” with esxcli and other commands. This can be caused by ADP …
DIF errros in ESXi log.
Have you ever saw DIF ERROR in yours ESXi logs. This is something you should probably start to worry about. If you have never heard about DIF, it is optional feature for disk systems and communications that extend the SCSI standard to provide end-to-end protection of user data. So it …
ESXi issues connected with storage.
ESXi issues connected with storage. There is a lot articles over the internet with information or questions regarding the storage manage by ESXi. No wonder, as storage issue is the most serious one and for many VMware administrators hard to debug. Problems can be connected with storage high latency as …
VM migration to HPE Synergy VC can make your VM inaccessible.
VM migration (vMotion) from some other environments (rack servers, other blades chassis) to HPE Synergy can cause lost of the connectivity. The main problem is that it is not happening every time. It is like 5-10% all migrations has problems rest of them runs smoothly. The main reason may be …
Some old school Unix tricks to pacer VMware logs.
Probably most of you already are using some tool to collect, manage and search log files. One of them can be vRealize Log Insight which is very handy. But in some other scenario you will be happy to know the below commands to check in the fast way ESXi logs. …
Creating snapshot failed
Error creating snapshot on virtual machine. Situation is usually repeatable, but sometimes fix after vm reboot. Error: “Creating snapshot failed.. An error occurred while saving the snapshot: Failed to quiesce the virtual machine” In such case it is likely problem with with VSS. There are there ways to resolve such …