If you’re using Citrix XenServer, then you’ve undoubtedly ran into network performance issues. These issues are even more apparent when your deployments utilize an iSCSI SAN. I have been working through this problem for the last 2 months, and I’ve found countless complaints about Citrix XenServer under performing on consistent bases. The common denominator here [...]
Here is a nice set of instructions on how to backup and restore the VM metadata for your XenServer shared resource pool: On the source host or pool, in xsconsole, select the Backup, Restore, and Update menu option, select the Backup Virtual Machine Metadata option, and then select the desired SR. In XenCenter, select the [...]
So there I was, looking at the fancy XenCenter graphs when I noticed that two of the servers in the HA enable pool would not display the graphs. My first reaction was to panic and use some colorful language (just kidding). The solution boils down into two: The XenServer time/date is out of sync. Check [...]
I wanted to migrate a VM from one server to the other using XenMotion when I ran into a small issue: “This operation cannot be performed because HA would no longer be guaranteed for this pool. To perform this operation anyway, you must disable or reconfigure HA.” Reason why this happened: When HA is enabled [...]
For some unknown reason, Xenserver decided to crash, and because it crashed uncleanly, some of the VM guest would not start properly. After reading more about the issue, I discovered that this can happen when xapi is not in sync with the master server in the pool. The solution? I logged-on to the master server [...]