• Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 951
  • Last Modified:

Merge snapshot on esxi 4.0 with low diskspace

I have a virtual machine with 3 large snapshots. I only have 10 GB free on the hard disk. There are three snapshots presence  152 GB / 134 GB and 53 GB. How can I merge these snapshots.

Paul
0
VDN_Bizzcom
Asked:
VDN_Bizzcom
2 Solutions
 
coolsport00Commented:
Do you have another datastore or storage to use Converter or Clone the VM? That will 'merge'/commit the snaps into the parent disk for you.
http://kb.vmware.com/kb/1007849

~coolsport00
0
 
Danny McDanielClinical Systems AnalystCommented:
If you shutdown the VM while deleting the snapshot(s), it won't require more space but it may take quite a bit of time to consolidate them.  You could shutdown and delete the smaller snapshot, then bring it up and consolidate the larger ones, but it will extend the amount of time needed to consolidate the data if the VM is running and it may impact performance if the VM is doing a lot of IO work while it's up.
0
 
coolsport00Commented:
"danm66"...do you have any references as the % amt of datastore free space is required to merge snaps? I was looking for it the other day and couldn't find it. I thought it was in 1 of 2 KBs, but didn't see it listed (thought it was 10% of the VMDK size).

~coolsport00
0
Improve Your Query Performance Tuning

In this FREE six-day email course, you'll learn from Janis Griffin, Database Performance Evangelist. She'll teach 12 steps that you can use to optimize your queries as much as possible and see measurable results in your work. Get started today!

 
markzzCommented:
coolsport00.
I can't show you documented evidence but can talk about the disasters we have had.
I have seen a snapshot consolidation utilise the equivalent disk space as the snapshot size.
danm66 is correct, shutting down the guest before consolidating will ensure the consolidation process does not require significant additional disk space to complete.
VDN_Bizzcom
It is best that you follow this advise. If you run out of disk space while consolidating the snapshots things get very ugly often requireing a restore from backup..
Shut it down, start the consolidation, be very patient. 152 GB / 134 GB and 53 GB in snapshot is terrible and indicates more management is required.
Look at SnapHunter..
0
 
coolsport00Commented:
That has been my experience as well. The Consolidation KB I posted states to shut down the VM and says it takes "minimal space" to commit when doing so, but doesn't provide a referenceable percentage. I thought I read it somewhere...maybe in a legacy VM Adm Guide (3.5 or 4.0 maybe?), but can't recall.

~coolsport00
0
 
Danny McDanielClinical Systems AnalystCommented:
@coolsport00  -  when the VM is live, it's not really a percentage that determines the snapshot size, but the result of IO activity over the time period that the consolidation is happening.  http://kb.vmware.com/kb/1034364 Understanding iterative redolog consolidations during online snapshot deletion in VMware ESX.  If you're asking about what is needed for offline consolidation...I don't know, but it's very minimal.  Usually, the .vswp space reclaimed from having the VM powered off is more than enough to allow offline deletes to occur.
0
 
coolsport00Commented:
Thanks "danm66"...

~coolsport00
0
 
VDN_BizzcomAuthor Commented:
I've requested that this question be deleted for the following reason:

solved<br />
0
 
coolsport00Commented:
How was this "solved" @VDN_Bizzcom? Proper EE etiquette is to close & reward points to the appropriate 'expert' that assisted you. If there was some other solution that resolved your issue other than what was posted, make a comment of what you did to resolve then close (not delete) the post and make your comment the 'answer'.

Regards,
~coolsport00
0
 
coolsport00Commented:
More than likely 1 (or both) of the first 2 posts (#35183318 , #35183751) resolved this issue. Recommend split.

~coolsport00
0
Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

Join & Write a Comment

Featured Post

Get expert help—faster!

Need expert help—fast? Use the Help Bell for personalized assistance getting answers to your important questions.

Tackle projects and never again get stuck behind a technical roadblock.
Join Now