Dfficulties reclaiming space from vv presented to ESX5.5

[chrisf]

Hi All,

I'm new to 3PAR and currently migrating data over from a number of Lefthand. All is going well except I notice that we're not really reclaiming space from the vluns presented to ESX5.5.

For example, I have a few 1.5TB vluns which were used in migration but now contain no data. VMware reports only a few hundred MB in use which is what I expect. The 3PAR still shows approx. 1100GB used. I have connected to one of my ESX hosts and ran the command below to unmap the datastore in 1GB chunks

Code: Select all

esxcli storage vmfs unmap -l datastorename -n 1000

The command takes approx. 3 minutes to execute. Using esxtop I can see the space being reclaimed. On the 3PAR I then run a compactcpg but only see anything between 10-30GB reclaimed.

Does anybody see the same issue? From what I understand the above should unmap all space.....

[chrisf]

Having just run more unmaps and tracked the userdata size, it appears the amount reclaimed is always 32GB.

Any ideas?

[joao.quaresma]

I'm having the same problems here.
However I ran this command in vmware esxi and it seems I got great results.
Login via ssh to esxi host and:
- cd /vmfs/volumes/volume_name
- vmkfstools -y reclaim_percentage(this is the % of free space you want to reclaim. For example, if you have 1Tb free, and you execute "vmkfstools -y 50", you'll reclaim 500Gb.

Hope it helps

Regards,