How to create Thick DataStore

Untick the 'Thin provision' setting of your storage (in the PVE web GUI under Datacenter) and newly created virtual disks will not be thin. If you need more specific help then you'll need to share more details about your storage and VM.
 
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Thanks for your reply. But can't change allocation in LVM-Thin. I can change allocation on ZFS. I wan't create a new DataStore on the RAID5 manage by a RAID card. I think LVM is better but I may be mistaken. But don't know how create LVM with thick allocation. I have 50 VMs on my server.
Thanks
 
Badou_Dream said:
But can't change allocation in LVM-Thin. ... But don't know how create LVM with thick allocation
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Delete it and use the underlying LVM instead? You will need to restore the VMs from backup. Or create a new LVM on another drive (and move virtual disks of the VMs)?
Badou_Dream said:
I have 50 VMs on my server.
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Make sure to have backup as your cannot change a LVM-Thin to LVM without data loss, as far as I know. Maybe someone else here knows a way?

EDIT: Please note that LVM might not have the same capabilities as LVM-Thin: https://pve.proxmox.com/pve-docs/pve-admin-guide.html#_storage_types
 
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Hi,
I managed lot of VMs in a datastore. With datastore in thin allocation, it's very dangerous. If many user import a large amount of data, it's possible to fill the datastore. Overallocation is very dangerous. And very hard to follow.
 
You could use some monitoring to get alerted before you are running out of space which is also a good thing to have in general.
 
Johannes S said:
You could use some monitoring to get alerted before you are running out of space which is also a good thing to have in general.
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Yes all is monitor. But if free space is low on your datastore, you have no solution aside grow your DataStore because all VMs on your DataStore can always use more space (your are in thin mode).
With thick mode, VMs disks have their full size. When we have an alert it's at creation new VM and we know that we must not create any more before add HDD, grow up the RAID and grow up LVM.
 
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