NickF
Guru
- Joined
- Jun 12, 2014
- Messages
- 763
Hi all,
I've been playing around on my test bench and I'm not really sure what I'm doing wrong.
I am using TrueNAS core as a backend storage device for an ESXI host. I installed 2x Samsung 480GB SM953s and set them up as a dedupe VDEV on the pool where the iSCSI target is located. I ZVOL I created for this testing is set to be sparse.
For testing purposes, I setup a VM with thin provisioned storage and cloned it 3 times. The resulting size being reported was ~80GB in VMWare and ~69GB in TrueNAS (due to compression ratio at about 1.35 with LZ4).
I deleted the 3 cloned VMs and turned dedupe on for the ZVOL. I then cloned the VM again 3 times. The resulting storage utilization is the same as with dedupe off. I thought maybe I should have deleted the original VM, because dedupe was off when that was created...but if that were the problem, wouldn't I only be seeing 2 guests' worth of storage, rather than all 4?
What am I doing wrong?
I've been playing around on my test bench and I'm not really sure what I'm doing wrong.
I am using TrueNAS core as a backend storage device for an ESXI host. I installed 2x Samsung 480GB SM953s and set them up as a dedupe VDEV on the pool where the iSCSI target is located. I ZVOL I created for this testing is set to be sparse.
For testing purposes, I setup a VM with thin provisioned storage and cloned it 3 times. The resulting size being reported was ~80GB in VMWare and ~69GB in TrueNAS (due to compression ratio at about 1.35 with LZ4).
I deleted the 3 cloned VMs and turned dedupe on for the ZVOL. I then cloned the VM again 3 times. The resulting storage utilization is the same as with dedupe off. I thought maybe I should have deleted the original VM, because dedupe was off when that was created...but if that were the problem, wouldn't I only be seeing 2 guests' worth of storage, rather than all 4?
What am I doing wrong?
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