A virtual machine provides several operations for creating and managing snapshots and snapshot chains. These operations let you create snapshots, revert to any snapshot in the chain, and remove snapshots. You can create extensive snapshot trees.

Configuring VMware vCenter Server to send alarms when virtual machines are running from snapshots (1018029).

vSphere informs you via the UI if the consolidation part of a Delete Snapshot or Delete All Snapshots operation has failed. The option Consolidate, is available via the Snapshot menu to consolidate the snapshots. For more information about Consolidating/Committing Snapshots in ESXi (1002310)

For more information about Configuring vCenter Server to send alarms when virtual machines are running from snapshots (1018029)

Generally, when you create a snapshot for the first time, the first child disk is created from the parent disk. Successive snapshots generate new child disks from the last child disk on the chain. The relationship can change if you have multiple branches in the snapshot chain.

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Our plan is to stop the application, take a VM snapshot of the server and the DB server (also centos) and a LUN snapshot then restart the application. Once all snapshots are taken we can then backup these snapshots at leisure.

The stop / snapshot / start events will take place outside of the NetBackup environment. We did consider trying to do these are part of the backup job but we currenty don't have an agent on the application server and couldn't see how to get the applications to start again in the pre notify scripts as at this point the snapshot had not been taken.

Am I going about this entirely the wrong way and is there a better way! I'm not responsible for the backups but have been given the task of scripting it all. Our backup engineers are not sure what the best way is either. Regular NBU snapshot ESXi backups work great as do NDMP backups of CIFS shares and other files system on the VNX storage but these don't use snapshots.

What you're describing is not (entirely) possible but I'm curious why this is a requirement. Is the application so sensitive that it can't tolerate or recover from an inconsistency (assuming any piece of the 3 tier app needs to be restored)?

Points 4 is not possible. You can't take a snapshot of either a VMWare datastore (assuming that is what you want to snapshot) and then mount it somewhere. A snapshot of the datastore can only be mounted back on vSphere and even if you do that you would need to register the VM again, discover it and then back it up via a VMware policy.

This would be part of a standard NetBackup VMware policy that would initiate the snapshot via VMware, the script runs, does the required DB stuff, snapshot taken, then NBU can get a clean copy. Post snapshot script would reverse the steps and restart the DB.

2) script independently and perform a standard backup on a VM ( to get the VM and not touch db you could exclude data disks in the policy - not sure if thats 100% going to work if VM is centos so you'd need to be specific in the policy of drive choice, or make sure application is in quiesced state. You can use bpstart.notify and bpend.notify scripts to trigger from within backup job

We can't use the bpnotify scripts as (please correct me if I'm wrong) these run before and after a client backup. This would mean the application would need to be down until the backup has finished. It's good for a client file system backup but not when we need to take snapshots to keep downtime to a minimum.

1) Trigger a VM backup of the DB server from Netbackup. This will cause ESXi to call the freeze script on the DB server (through vmtools). This script (bash) will shutdown the application and database

Step 4 5 & 6 need to be rethought. A VM snapshot creates a transaction log file for want of a better term. Updates while the snaphot is active go to this file to be replayed into the VMDK when the snapshot is deleted.

I think we are just refering to snapshots in different ways. I'm, probably incorrectly, refering the snapshot as the frozen files when technically it could be the delta files. It is the VMDKs I want to back up so we are backing up the frozen state of the machine. The transaction logs (deltas) as you say are the changes since that point and I don't want to backup those.

Typically we take snapshots when required, not in advance. While you can schedule them, do bear in mind the above and the fact that if you have to revert, you go back to the creation time which may be further away than if you create a manual snap.

So I am running vmware vsphere client version 5.5.0 and I have a number of VM's running on it with all of their data saved to a datastore that is on another server. I can access the datastore and view the files of each vm and each vm contains each of the following type of file;

I have to set up a VM to a certain state, take a snapshot and send it to a client. Would I be right in assuming that all I would have to do is download the .vmsn file and send it, or is there more to it?It just seems too easy to me to download and send the file, anyone have any information would be greatly appreciated.

No, you would not. A snapshot is a delta file - it contains only the changes made to the disk, relative to the previous snapshot or the base disk. So to send a snapshotted VM, at a minimum, you need to transfer all the vmsn files, as well as the vdmk. If you expect to be able to fire up the machine at the location you send it to, they'll probably need the rest of the machine's files as well (like the .vmx) file.

Furthermore, copying a machine with snapshots isn't generally a supported operation. Check out the VMware KB on moving/copying VMs within a virtual environment - note that they tell you to commit any snapshots before moving or copying the VM. This is not to say it's impossible to move a VM that has snapshots, but it's not supported, and generally a much bigger pain that it's worth.

VMware vSphere is VMware's virtualization platform, which transforms data centers into aggregated computing infrastructures that include CPU, storage, and networking resources. vSphere manages these infrastructures as a unified operating environment,...

Take a new snapshot of your Dev build, then revert back to your baseline snapshot, deploy a template from it. Now go forward to your new snap shot of your Dev image. Now test deployment of ur new template, if it works then just delete all of the snap shots and increase the disk size.

I cloned a snapshot using the plugin and everything went fine, but when I went to hot-add the VMDK to the VM, I was presented with a prompt telling me that the UUID of the VMDK is the same and I should not proceed as it will cause boot problems, etc. I restored some files from a cloned VMDK in the past and do not recall seeing this message, but maybe I did and just added it because I was under pressure to restore. This time I am just performing a disaster recovery test and more hesitant to mash buttons

Are you trying to add a VMDK to a VM that already has a disk with the same UUID? Can you let me know your exact workflow? e.g. you are using vcplugin, you snapshot a VMFS datastore? or a vVol datastore?

Ultimately I am trying to access the snapshot volume with my SQL server to mount the DB contained within so I can access records from the snapshot period. I feel that I have done this before and not sure if I just accept the warning and proceed as I will only be removing it shortly after adding, or if this will cause system instability.

It's not the VMFS that is the problem, it's when I try to attach a VMDK from that re-signatured VMFS to a current VM that I get the notification. I am just trying to figure out if I select YES and proceed to add it, if it will cause any ill-harm to my running production VM.

"Virtual disks "/vmfs/volumes///" and "/vmfs/volumes///" have the same UUID 60 00 C2 97 55 c1 8d 49-cd 59 4f 55 6e d9 0f 31. Virtual disks with same UUID should not be assigned to a VM since this can lead to problems when the guest boots. Please make sure virtual disks have unique UUIDs. Do you want to continue?"

There is another option though: since you've cloned the VMFS datastore via the vCenter Plugin, you can browse this datastore, and find the VM and register this with a new name, to access files from the cloned datastore/disk.

Running NetApp Release 9.6P3 and VMWare ESXi 6.5. I have 3 separate datastores on the NetApp that are presented to the 4 ESXi hosts and all is well. I'm trying to test the process of mounting one of the volume snapshots that NetApp takes throughout the day and mount it as a new LUN in vSphere so I can interact with the virtual machines on that restored LUN. Using the following method, I can get the snapshot mounted and active within the ONTAP System Manager, but in refreshing and scanning new storage on the vSphere side, it never shows up so I'm missing something. In ONTAP, I goto Storage\Volumes and select my Volume. More Actions\Clone\Create\Volume and I give the volume a new name and select an existing Snapshot. After that I goto Storage\LUNs and edit the new volume and enable the only Initiator Group listed which is the same as the production LUNs. After that, I'm not sure what to do as I can never see it in vSphere. Where am I going wrong?

A VMware snapshot is a copy of a virtual machine (VM) in a VMware environment taken at a specific point in time. Snapshots are useful for restoring a VM to a certain point in the event of a system failure or error. They are not useful for taking VM backups.

A VM snapshot is a point-in-time image of the state and data of a VM. The state refers to whether the VM is powered on, powered off or suspended. A snapshot of the VM can be taken in any of these states. The VM's data includes all its files, components and devices, such as its memory, disks and virtual network interface cards (NICs). When the VM's memory state is captured in a snapshot, the snapshot takes longer to complete and network response might also slow. 152ee80cbc

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