Before I go too far down the rabbit hole I was hoping for some input.
I am looking to create an iSCSI connection from FreeNAS to xcp-ng and have created an SSD Pool with 892.93 GiB. The SSD Pool wil only be used for xcp-ng iSCSI.
The FreeNAS Documenation States:
For performance reasons and to avoid excessive fragmentation, keep the used space of the pool below 80% when using iSCSI.
I believe I may be getting mixed up with some terminology e.g. is pool space used “used” when it is assigned a zvol or is it only “used” once the zvol has data on it. Of the following options I would be grateful if someone could point me in the direction of the correct implementation:
Size the zvol to 100% (892.93 GiB) of the SSD Pool Size and ensure the zvol used space does not exceed 80% (714.344GiB).
Size the zvol to 80% (714.344GiB) of the pool size so the zvol cannot exceed 80% off the pool size.
My main concern is with the thick provisioning of VM’s and how many I can squeeze on to the pool as xcp-ng will obviously be seeing them as taking up the full allocated lun space.
Thanks in Advance
P.s. Tom keep up the good work and thank you for the excellent videos…