PowerCLI – Copying PortGroups from a Standard vSwitch to a Distributed vSwitch
Ran out of ports on a Standard vSwitch and could not reboot the host. Sounds like a good time to implement a Distributed vSwitch and copy the PortGroups over.
When you run the script, it will ask for the desired ESXi host name, desired Standard vSwitch name, and the desired Distributed vSwitch name so you don't have to modify the code.
#Take port groups from a specified vSwitch on a specified host and create all the same port groups on a specified Distributed vSwitch
$InputHost = Read-Host "Host Name"
$InputvSwitch = Read-Host "vSwitch Name"
$InputDvS = Read-Host "Distributed vSwitch Name"
$vmhost = Get-VMHost $InputHost
$vss = Get-VirtualSwitch -Name $InputvSwitch
$vssNumPorts = $vss.NumPorts
$standardpg = $vmhost | $vss | Get-VirtualPortGroup
$dvs = Get-VDSwitch $InputDvS
foreach ($i in $standardpg) {
$pvgname = $i.name.ToString()
$pvg = "dv-" + $pvgname
$vlan = $i.VLANID
#create a Static DvS PG with the same VLAN, number of ports and add a "dv-" to the name
Get-VDSwitch -Name $dvs | New-VDPortGroup -Name $pvg -VLanId $vlan -PortBinding "Static" -NumPorts $vssNumPorts
}
Click here to download a text file containing the script.
Note: this was a script that worked in my environment. There is no warranty or support with this script, please use at your own risk.
PowerCLI – Rescan HBAs for a Cluster on a Host by Host Basis
After having some bad luck with rescanning HBAs for entire clusters or datacenters all at the same time (Cliff's Notes: the LUNs ended up looking like array based snapshots and therefore unusable), it was decided that any rescans should be done on an individual host basis. Below is the script I created to achieve this goal.
When you run the script, it will ask for the Cluster name so you don't have to modify the code.
#Rescan HBAs for a cluster on a host by host basis
$InputCluster = Read-Host "Cluster Name"
$vmhosts = get-cluster $InputCluster | get-vmhost
foreach ($i in $vmhosts) {
Write-Host "Starting rescan of all HBAs on $i"
$i | Get-VMHostStorage -RescanAllHba | Out-Null
Write-Host "Rescan of all HBAs on $i is complete"
Write-Host ""
}
Click here to download a text file containing the script.
Note: this was a script that worked in my environment. There is no warranty or support with this script, please use at your own risk.
PowerCLI – Analyze a Cluster to Move VMs to a Resource Pool
After someone deployed a bunch of VMs, we let them know about the Resource Pool they were supposed to be deployed to. Oops. To correct this, and to avoid a couple hours of dragging and dropping VMs into a resource pool, I was able to create a script that detects if a VM is outside of a Resource Pool and then move it to the specified Resource Pool.
When you run the script, it will ask for the Cluster name and the Resource Pool name so you don't have to modify the code.
#Analyze the Clusters and check for systems outside of Resource Pools
$InputCluster = Read-Host "Cluster Name"
$InputRP = Read-Host "Resource Pool Name"
#Cluster which will be analyzed
$cluster = Get-Cluster $InputCluster
#Resource Pool where VMs should be moved
$rp = Get-ResourcePool $InputRP
#Detection of VMs not in Resource Pools
$norp = Get-Cluster $cluster | Get-VM | where {$_.ResourcePool.Name -eq "Resources"}
foreach ($i in $norp) {
Write-Host "Moving $i to Resource Pool $rp"
Get-VM $i -Location $cluster | Move-VM -Destination $rp | Out-Null
Write-Host "Move complete"
Write-Host ""
}
Click here to download a text file containing the script.
Note: this was a script that worked in my environment. There is no warranty or support with this script, please use at your own risk.
Fusion-IO Caching Tests…
After some issues with the setup and configuration of the Fusion-IO ioCache cards we picked up, I finally got to dig in and do some basic testing with IOMeter.
To setup the test, I configured a new 20GB VMDK on it's own paravirtualized SCSI Controller. The drive was formatted NTFS in a full/non-quick method as the F:\ drive. The IOMeter test was run on a single worker against the entire F:\ drive. The All-in-one test was selected and run for 20 minutes.
First up, I tested the drive all by itself with no caching enabled:
| IOps: | 1348.69 | Read IOps: | 670.1738 | Write IOps: | 678.5159 |
Next, I tested Volume based caching. I started off by making the following modifications to the Fusion-IO tab within vCenter as follows to add only the F:\ drive to the Volume Caching Filter:
Then I reset the F:\ drive by formatting it again as NTFS in a full/non-quick method. Once the format was complete, I reran the IOMeter test and received these results:
| IOps: | 1486.163 | Read IOps: | 737.5608 | Write IOps: | 748.6018 |
Lastly, I tested the Drive based caching. I went back to the Fusion-IO tab within vCenter and removed the Volume Caching Filter on the F:\ drive and then set the Drive Caching Filter to Drive1 (Drive0 was the drive the OS was installed on, Drive2 was the drive which is attached by FusionIO automatically):
Then I reset the F:\ drive by formatting it again as NTFS in a full/non-quick method. Once the format was complete, I reran the IOMeter test and received these results:
| IOps: | 1509.644 | Read IOps: | 748.7889 | Write IOps: | 760.8555 |
I also managed to grab a shot of the Performance graphs for the disk during the tests via vSphere client: (pardon the lapse between 2PM and 3PM on the graph)
So to review and put the results all on the same table:
| No Caching Enabled | IOps: | 1348.69 | Read IOps: | 670.1738 | Write IOps: | 678.5159 |
| Volume Caching Enabled | IOps: | 1486.163 | Read IOps: | 737.5608 | Write IOps: | 748.6018 |
| Drive Caching Enabled | IOps: | 1509.644 | Read IOps: | 748.7889 | Write IOps: | 760.8555 |
Remember, these are just initial results with nothing but having the card installed, drivers installed, firmware upgraded, ioTurbine installed, and the guest package installed. While some of the results weren't exactly what I was expecting, I'm pretty excited to dig in deeper to see what kind of performance we can gain out of these cards.
Small update...
While this particular blog post is about caching, since that's how these cards will be used in this environment, I couldn't help but go back, mount the Fusion-IO card as VMFS storage, SvMotion the F:\ drive over to the Fusion-IO VMFS datastore and run the test again. So once again, the F:\ drive was formatted as NTFS in a full/non-quick method. Once the format was complete, I reran the IOMeter test and received these results:
| IOps: | 5443.904 | Read IOps: | 2700.201 | Write IOps: | 2743.703 |
Using the Cold Clone 3.0.3 ISO with vSphere 5
As many know, the Cold Clone ISOs have been discontinued and support has been removed from VMware. This is quite unfortunate especially when you get into the business of P2V’ing items like domain controllers, SQL servers, and other pesky boxes.
I understand the converters from VMware have improved by leaps and bounds over what it was in version 3, but there’s still a reasonable amount of security in P2V’ing a box while it’s completely down with no running services whatsoever.
First issue I ran into while attempting to P2V an old SQL server was finding the ISO. It has almost been removed from the internet as a whole. So I've uploaded it here: Cold Clone 3.0.3 Link
Second issue, boot time. It took me literally 15 minutes from the point of “hitting a button to boot to disc” to the point of accepting the EULA.
Third issue, drivers. I was lucky enough for the internal NICs to be found but the add-on NICs were not. To put this into perspective, the server I was working on was an HP G5. I tested with an HP G6 and it did not find any NICs at all.
Fourth issue, disappearing network settings. Every time I went to the networking settings, they would be cleared. The settings held as long as I clicked apply and then ok, but the second you went back to the network config menu I had to renter all the info.
Fifth issue, vCenter integration. It’s not exactly shocking that it didn’t work with vCenter, but I was hopeful. The converter would go through and recognize everything out of vCenter, but then ran into a bunch of issues as soon as the clone actually starts. Such as:
Couldn’t find the Distributed vSwitch vNIC:
[managedVMCreator,2657] No network named "SYSMGMT" was found
[imageProcessingTaskStep,194] VmiImportTask::task{9} step "create VM" destroyed
[vmiImportTask,439] Error during creation of target VM
[imageProcessingTaskStep,194] VmiImportTask::task{9} step "create and clone to VM" destroyed
[imageProcessingTaskStep,194] VmiImportTask::task{9} step "Clone VM" destroyed
[imageProcessingTaskImpl,552] VmiImportTask::task{9}: Image processing task has failed with MethodFault::Exception: vim.fault.NotFound
[imageProcessingTaskImpl,154] VmiImportTask::task{9}: SetState to error
Couldn’t find the FC attached storage on a host:
[NFC ERROR] NfcNewAuthdConnectionEx: Failed to connect to peer. Error: Host address lookup for server esx01 failed: The requested name is valid, but no data of the requested type was found
NBD_ClientOpen: Couldn't connect to esx01:902 Host address lookup for server esx01 failed: The requested name is valid, but no data of the requested type was found
DISKLIB-DSCPTR: : "vpxa-nfc://[VMFS_015] VM01/VM01.vmdk@esx01:902!52 f1 8e a1 39 1c c1 f8-9c d4 05 71 1a 4f ae c6" : Failed to open NBD extent.
DISKLIB-LINK : "vpxa-nfc://[VMFS_015] VM01/VM01.vmdk@esx01:902!52 f1 8e a1 39 1c c1 f8-9c d4 05 71 1a 4f ae c6" : failed to open (NBD_ERR_NETWORK_CONNECT).
DISKLIB-CHAIN : "vpxa-nfc://[VMFS_015] VM01/VM01.vmdk@esx01:902!52 f1 8e a1 39 1c c1 f8-9c d4 05 71 1a 4f ae c6" : failed to open (NBD_ERR_NETWORK_CONNECT).
DISKLIB-LIB : Failed to open 'vpxa-nfc://[VMFS_015] VM01/VM01.vmdk@esx01:902!52 f1 8e a1 39 1c c1 f8-9c d4 05 71 1a 4f ae c6' with flags 0x2 (NBD_ERR_NETWORK_CONNECT).
[diskHandleWrapper,87] DiskLib_Open failed on vpxa-nfc://[VMFS_015] VM01/VM01.vmdk@esx01:902!52 f1 8e a1 39 1c c1 f8-9c d4 05 71 1a 4f ae c6 with error NBD_ERR_NETWORK_CONNECT.
[imageProcessingTaskImpl,552] BlockLevelCloning::task{21}: Image processing task has failed with MethodFault::Exception: sysimage.fault.DiskLibConnectionFault
[imageProcessingTaskImpl,154] BlockLevelCloning::task{21}: SetState to error
How I actually got it to work was by sending the P2V directly to a specific ESXi 5 host. Once I did that, I could P2V the system to the locally attached storage or the FC attached storage. I attached the vNIC to a standard vSwitch.
VMworld 2012 In Review
After a nice long week away, it's nice to finally be back home from VMworld...
Let's cover some of the good stuff:
- Overall friendliness of people. Truly amazing how available people were and how they didn't mind talking anywhere from a couple minutes to all night.
- My top three sessions: Definitely grab these sessions once they're available on the VMworld site.
NET2207 - vDS Deep Dive with Jason Nash from Varrow - Very in depth, Jason had a lot of tips and demos which even features new functionality for vSphere 5.1
VSP1504 - Ask the Expert vBloggers with Chad Sakac, Scott Lowe, and Rick Scherer from EMC, also with Duncan Epping and Frank Denneman from VMware - Interactive sessions are always great, these guys sat up on stage and answered question after question, basically being turned into a makeshift helpdesk, and was quite entertaining
VSP1353 - vCenter Deep Dive with Justin King, Ameet Jani and Deep Bhattacharjee all from VMware - this session had a lot of information to cover, especially with all the new features in vCenter 5.1 and the speakers covered it all with great depth and also featured a Q&A portion at the end with several good questions being brought up from the audience
- Hang Space with the vBrownBag and theCUBE spaces were terrific. It was amazing how many speakers, bloggers, and other on-demand people were hanging out freely in the Hang Space. The Community Tech Talks from the vBrownBag guys were terrific and as soon as they're posted I'll provide links. The Hang Space also featured a charging center which worked as a coat check for your portable devices, this was brilliant.
- Certificate Lounge and the Fast Track VCAP:DCA samples. This was a terrific idea and a bit of a hidden gem in the Marriott Marquis. I must have spent all of Thursday afternoon doing the samples. Some great information and awesome discussions with folks coming in from cert tests or even VCDX Defenses
- Parties. There were some terrific parties this year. My favorites were definitely the VMunderground, HP Customer Appreciation, EMC Customer Appreciation, VMware CTO, and then the VMware VMworld parties. So thanks to all those people who sponsored the parties as well as attended to make it such a great time.
There wasn't a lot of negative stuff, but there were a couple items that stuck out:
- Speakers that phoned it in from home. If you went through the time to make the slides, at least learn the content so the session attendees aren't stuck going through the slides with you
- Hands on Labs. These have been terrific in years past, but they just couldn't keep them up and error free.
- Food. Breakfast was served in Moscone West with minimal tables and chairs. Lunch was prepackaged and normally soggy by the time it was served. Lunch was also served outside in the garden area. In the past lunch usually consisted of a self-serve buffet with table seating. The lack of proper seating wasn't conducive to networking and a lack of shade is never a good thing. I will say, the VMworld blanket they handed out was very nice.
- Solutions Exchange being open on Sunday and closing on Wednesday Having the Solutions Expo open on Sunday instead of being open on Thursday was a poor choice. Personally, I couldn't make it to the Solutions Exchange or the welcome reception due to other obligations and that took away a whole day from being able to visit with the vendors.
Some of the other notable items from VMworld this year:
- Tons of books released at the show:
VMware vSphere 5.1 Clustering Deepdive by Duncan Epping and Frank Denneman
Storage Implementation in vSphere 5.0 by Mostafa Khalil
VMware vSphere 5 Building a Virtual Datacenter by Eric Maille and René-Francois Mennecier
Virtualization Changes Everything: Storage Strategies for VMware vSphere & Cloud Computing by Vaughn Stewart, Michael Slisinger, Vytautas Malesh and Dr Stephen Herrod
The Official VCP5 Certification Guide by Bill Ferguson
- v0dgeball This was a terrific event put together by Fred Nix and Chad Sakac which put together teams of players for some dodgeball action. Everything was collected for charity this year and Wounded Warrior was given over $12,000. It was a fantastic time for a terrific cause and hopefully the vExpert team can do a little better next year!
- Speaking of charities... There was a ton of charities involved this year. As I mentioned v0dgeball raised over $12,000 for Wounded Warrior. VMunderground raised around $5,000 for Wounded Warrior as well. Another notable charity donation was during the second Keynote where Netapp received $10,000 for Be The Match. Terrific charitable support this year!
- Top Ten VMworld Sessions have already been released. VMworld's website has already published the top ten sessions (based on attendee votes) on the VMworld site. This includes both a youtube video of the session as well as a PDF with the slide deck. They can be found: http://www.vmworld.com/community/conference/us/learn/top10
Took some pictures as well:
Fixing the lack of Twitter handle on the Attendee Badges:
Kicking things off with the VMunderground Party:
VMworld Keynote Intro:
Stumping the "Expert vBloggers" (VSP1504 - Chad Sakac, Frank Denneman, Duncan Epping, Scott Lowe, a guest from the audience and Rick Scherer) on stage:
Paul Maritz speaking to the VMUG Leader group during the luncheon:
Pat Gelsinger taking the stage in front of the VMUG Leaders:
Pat Gelsinger, Paul Maritz, and Steve Herrod talking to our group:
William Lam setting up for his Unsupported vInception session in the vBrownBag area:
Jason Nash (Varrow) getting mobbed after his vDS session (NET2207):
Steve Herrod at the CTO Party:
Geeky Tat found while in the Thirsty Bear (yes, it really is binary):
Post VMworld Meat Coma thanks to the WPAVMUG folks:
Just to wrap things up, thanks to everyone I met out there and thanks to all the people that came up and introduced themselves. It was a terrific week, lots of information was learned, tons of connections were made and it was one of the best conferences I've been to yet... Thanks again!
VMworld Prep!
So you got your VMworld ticket... you got your hotel reservation... you got your flight booked... You're ready to go right?
You're only cracking the surface!
- Build up your calendar with sessions: VMworld Session Builder
With the way the sessions are being done, I'm taking the position of registering for sessions I would go to at time slots I have available. I would much rather be registered for a session and miss it, than miss it due to it being full and unavailable. You'll also find that if you export your calendar, it will tell you what rooms your sessions are in so that you can plan accordingly. - Build up your calendar with after hours events: VMworld Gatherings
Please note that many of these events are RSVP only, so definitely make sure to get registered and/or talk to your favorite company's reps to get you registered. - Make time for the Hands on Labs
The Hands on Labs are always very well organized and provide great content, don't miss out on an opportunity to learn in an environment you're not responsible for! - Check out the Solution Expo
Yes, the vendors are going to want to scan your badge. However, there are always some diamonds in the rough. Either some amazing technologies with capabilities I didn't realize existed, or some awesome prizes. - Stop by the Hangspace
The Hangspace will be providing an area for the VMTN Community TechTalks and other interviews as well as blogger tables and space for general networking. - Stay in the know by following VMworld related hashtags on twitter: VMworld Twitter Community
A map of the layout around the Moscone Center has already been released:
If you fill your schedule like I do, chances are you aren't seeing the hotel for any reason but to sleep for a couple hours. So let's talk about the accessories that can keep you on the go...
- Don't worry about a backpack. You'll get one at registration.
They're always quite nice and very durable. Not to mention that's one less thing to lug on the plane on the way there or find space for on the way back. A sneak peek has already been released:
- Bring some comfortable shoes
You'll be walking or standing a majority of the day, you don't want to miss out on something because your feet hurt - Bring spare batteries or external chargers
I cant stress this one enough. With 15,000+ attendees there aren't enough plugs for everyone. Don't miss out on a session or activity because you couldn't get to the VMworld app or your calendar. Personally, I picked up a New Trent iPulse IMP100P. Two USB outputs and 10,000 mAh in the size of an iPhone should be good enough to get me through a full day. - A tablet to take notes on.
In years past I'd have my iPad and the Pen Ultimate App, but this year I'm going with the Nexus 7 and the Evernote App. I've outfitted the Nexus 7 with the Poetic Leather case and an amCase amPen stylus. So far has been quite a combo for during business meetings and various local user groups. - Business Cards
VMworld is an amazing resource to gain knowledge and information and the networking opportunities are incredibly strong.
Some other tips to those that have never been:
- Dress code is normally said to be Business Casual, however you'll see everything from high dollar business suits down to shorts and sandals. Be comfortable, but don't look like a mess.
- Wireless is readily available throughout. It may not be the fastest, but it's available and free. In years past, the AT&T networks (my carrier) have been quite overloaded so use whatever has the best connection out.
- Drinks (soda, water, juice) are normally readily available. Snacks are available at different times during the day as well, everything from granola down to candy bars.
- Breakfast and lunch are provided, make sure you know how to get there. There are other options around the Moscone, but none are free and some aren't exactly quick.
Not going to VMworld?
Well, watch the Keynotes and get access to quite a bit of other information live via VMware NOW: http://bit.ly/VMwareNOW and keep up with action by way of the Community Tech Talks featuring myself and many other vExperts: http://www.vmworld.com/docs/DOC-6032. There is also a large list of bloggers that will be onsite and providing content as well: VMworld Blogger Coverage.
RDM Conversion Pain Points…
The latest infrastructure I've inherited is loaded full with RDMs. My first order of business was to get rid of them, especially since we aren't using them for any reason other than a possible performance improvement.
The steps we've been taking is to get rid of them:
- Convert from a physical RDM to a virtual RDM
- Shut down system
- Take note of SCSI information
- Remove and Delete from Disk
- Apply
- Re-add the RDM as a virutal RDM instead
- Perform a Storage Migration from one datastore to any other datastore, specifically move the virtual RDM
- Once complete, check the settings on the VM and verify that the hard disk is listed as "virtual disk"
A couple of the pain points we've run into:
Removing and deleting of the physical RDMs did not work as planned. Roughly 10% of the VMs ran into a problem where the pointer files were not properly removed and therefore the RDMs could not be remapped as virtual RDMs. We could still add a hard disk and point it at the pointer files and it properly added back to the VM. We tried rescanning HBAs, we tried different SCSI controllers, etc.
Finally, we figured out that by going into the datastore and manually deleting the pointer files and then vMotioning the VMs to another ESXi host within the cluster, we could then add a new RDM to those previously used RDMs.
In the case of Storage vMotioning the virtual RDMs to a new datastore, if we SvMotioned the RDM to a Storage DRS datastore cluster it only moved the pointer files. If we went through and checked the "Disable Storage DRS" option and selected an individual VMFS datastore, it did the conversion over to VMDK. Adds an extra step, but still gets the job done.
Only a 100+ more RDMs to go... Good times.
SRM: vSphere Replicated VMs stuck in a “Sync” status
Here recently I've noticed that there is an occasional time where the VMs I have replicating using the vSphere Replication system are stuck in a "Sync" status for an overly long time.
After pulling the logs, I was able to figure out what was happening... Timeouts, lots of them. The log file vmware-dr.log pulled from the remote site was full of lines like the following: (local is the SRM server, peer is the vCenter server)
2012-04-02T07:35:04.077-04:00 [02784 verbose 'Default'] Timed out reading between HTTP requests. : Read timeout after approximately 50000ms. Closing stream TCPStreamWin32(socket=TCP(fd=2596) local=10.xx.xx.xxx:9085, peer=10.xx.xx.xxx:55039)
2012-04-02T11:54:34.159-04:00 [02744 verbose 'Licensing'] Asset in sync.
2012-04-02T11:58:12.527-04:00 [02868 info 'LocalVC' opID=ac2d1cb] [PCM] Received NULL results from PropertyCollector::WaitForUpdatesEx due to timeout of 900 seconds
2012-04-02T11:58:12.723-04:00 [02860 info 'LocalVC' opID=596971f7] [PCM] Received NULL results from PropertyCollector::WaitForUpdatesEx due to timeout of 900 seconds
After a brief discussion with our network engineers, it was believed that there was no problem with the connection between the local and remote site. So I took a "when in doubt, reboot" approach. I restarted the SRM service on the remote SRM server. No luck. After that, I did a "Restart Guest" on the VRS system at the remote site. After about 5 minutes, the systems started to connect and replicate again.
I've noticed it a lot, and I've heard from other people whom also manage their own SRM deployments that a reboot is a pretty good first step in troubleshooting. So keep that in mind as issues arise and troubleshooting is required.
Standalone ESXi 5 Host Upgrade
Have an ESXi host which is a standalone box? No VMware Update Manager? No vMA?
Well, they still require patches. Luckily enough, you can still use the stripped down version of the console which is included in ESXi to update it.
Start by heading out to the VMware Patches portal http://www.vmware.com/patchmgr/download.portal and download the neccessary patches for the server that needs patched.
Upload the patch zip file to a datastore that the server can talk to via either SCP or the datastore browser
Next, make sure the SSH service has been started.
To do this while in the vSphere Client, click on the desired host, and click on the "Configuration" tab followed by the "Security Profile" link in the "Software" box, then click on "Properties" in the top right side.
Highlight "SSH" and then click "Options", after the SSH Options screen pops up, click on "Start", then click "OK" twice to get back to the Configuration tab.
After getting connected to the ESXi host, run the command: esxcli software vib install -d *full path to uploaded zip*
Example: esxcli software vib install -d /vmfs/volumes/VMO-01 Datastore/Temp/update-from-esxi5.0-5.0_update01.zip
There should be a message showing that the update was completed successfully and that the system needs to be rebooted.
If ready to reboot, type in "reboot" and the system will reboot. Just remember to check to make sure that the SSH service has been stopped when it boots back up.
One error that I ran into, if you don't give the full path to the zip file containing the update, the patching will fail with a "MetadataDownloadError" reading:
Could not download from depot at zip:/var/log/vmware/*update name*.zip?index.xml, skipping (('zip:/var/log/vmware/*update name*.zip?index.xml', '', "Error extracting index.xml from :/var/log/vmware/*update name*.zip: [Errno 2] No such file or directory: '/var/log/vmware/*update name*.zip?index.xml'"))
url = zip:/var/log/vmware/*update name*.zip?index.xml
Please refer to the log file for more details.
Once I put in the full path, it worked just fine.
Upcoming Events
Recent Posts
- PowerCLI – Copying PortGroups from a Standard vSwitch to a Distributed vSwitch
- PowerCLI – Rescan HBAs for a Cluster on a Host by Host Basis
- PowerCLI – Analyze a Cluster to Move VMs to a Resource Pool
- Fusion-IO Caching Tests…
- Updating the Fusion-IO firmware…
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