vSphere bug can bring down entire cluster (not fixed in Update1).
Last month I was on-site at one of my customers and experienced a major problem on the vSphere environment. We suddenly experienced about 150 virtual servers running on 16 hosts in 2 clusters (on the same SAN) going in jabber-mode. They froze, which made them unavailable for pings and other traffic. The freeze moment varied from 1 to 30 seconds. After that the VM’s went back on-line again. This seemed to happen in groups of about 10 to 30 VM’s.
Pretty soon we saw in the logs that a VMFS LUN was removed by one of the SAN administrators. This LUN was still attached to all the ESX hosts in that cluster but was not “in use”, meaning, there were no VM’s running on it.
Off course the unclean removal on SAN-level of a LUN before detaching it from the ESX hosts is not the way to do this but that what I just described shouldn’t have happend!
The quick solution was … Continue Reading
Application virtualization community at Appvirtguru.com
Last month the well-known community forum softgridguru.com moved to the new Appvirtguru.com site. Here is the note Ruben Spruijt left behind on softgridguru.com:
After 20 years it’s time for some changes.
We want to inform you about the fact that the softgridguru.com content is moved to www.appvirtguru.com.
The goal of Appvirtguru.com is to provide deep technical information about Application Virtualization in general.
The first phases of AppVirtguru.com are:
- Provide a well moderated forum about App-V; current situation
- Provide a well moderated forum about AppVirt solutions such as VMware, Citrix, Symantec, InstallFree, Novell, Xenocode,.. (early 2010);
- Upgrade and extend the current platform. (early 2010)
- Change style; colors and logos (early 2010)
- Fix SMTP and registration issues (end 2009)
Keep a close eye on this site. I will contribute to the new forum in the near future.
Time to vote for your favorite bloggers
First of all: Happy new year and I wish you all a fantastic 2010! In this first post of the year on Virtualfuture, I want to bring the latest survey of Eric Siebert’s top 25 “VMware and virtualization bloggers” to your attention. Currently Virtualfuture.info is ranked at number 17, which I’m very proud of. I’m not saying I deserve to be in the new upcoming top 25 of Virtualization bloggers, but if you like what we’re doing, our Application virtualization comparison chart for example or our event reports (VMworld, Synergy) and our regular blogging, please give Virtualfuture.info a vote as well.
Quest vWorkspace – Version 7.0 released
Quest Software announced the availability of the newest version of Quest vWorkspace, a desktop virtualization solution for simplifying the provisioning, management and use of virtual desktops. In addition to its support of the VMware platform, vWorkspace also now supports VMware Linked Clones, which reduce shared storage disk space requirements. Other new features enhance the end-user experience and expand desktop platform choices. vWorkspace manages, provisions and brokers connections, transforming the desktop infrastructure into an on-demand service with optimized user experience for LAN and WAN.
XenDesktop on VMware VI/vSphere
As I was playing around with XenDesktop 4, I had some trouble connecting the Citrix Desktop Delivery Controller to the vCenter server. And as 95% of Xendesktop deployments are on VMware VI or vSphere, I thought this tip could be useful for you as wel. … Continue Reading
