Here are a few considerations: - First snapshot of volume is always full snap. - XenServer/XCP-NG backups are always thin. - Thin provisioning calculations never go down. Even if you delete data from disk.
As you filled the disk of the VM to top the thin provisioning threats it as full VM from that moment on even if data is deleted. So the full snap that will be migrated to NFS will always be of max size. I am not 100% certain as I am yet to start running backup tests. Best regards, Jordan -----Original Message----- From: Florian Noel <f.n...@webetsolutions.com> Sent: Monday, October 4, 2021 6:22 PM To: 'users@cloudstack.apache.org' <users@cloudstack.apache.org> Subject: Size of the snapshots volume [X] This message came from outside your organization Hi, I've a question about the snapshots volume in Cloudstack When we take a snapshot of a volume, this create a VHD file on the secondary storage. Snapshot size doesn't match volume size used. Imagine a volume of 20GB, we fill the volume and empty it just after. We take a snapshot of the volume from Cloudstack frontend and its size is 20GB on the secondary storage while the volume is empty. We've made the same test with volume provisioning in thin, sparse and fat. The results are the same. We use Cloudstack 4.15.1 with XCP-NG 8.1. The LUNs are connected in iSCSI on the hypervisors XCP. Thanks for your help. Best regards. [Logo Web et Solutions]<https://urldefense.com/v3/__https://cloud.letsignit.com/collect/bc/60e5c62f48323abd316580a3?p=NCQXXscJv3N-mDjmqdZzYH59ppVbYP3afFkR7SxQ1JaS_ev9TYs06R5yG_cSPe6tLuS3Bgn1EjTO39P6hIWtNhqUZ5n-wh878kG0mKc-TDzCgMKxZAoqvlt4NqCVlovo0bn9PcMUWFMak1jGIGRgGg==__;!!A6UyJA!zYKJBkzZPANfqT6kPkY_Mfo8xu_hnCJDzEIYjPMOvqs3MwyZUs0N9FX1Ln1zICtHKJKHCye42DjJ$ > [Facebook]<https://urldefense.com/v3/__https://cloud.letsignit.com/collect/bc/60e5c62f48323abd316580a3?p=NCQXXscJv3N-mDjmqdZzYH59ppVbYP3afFkR7SxQ1JaS_ev9TYs06R5yG_cSPe6tLuS3Bgn1EjTO39P6hIWtNhqUZ5n-wh878kG0mKc-TDyIo6EwBskR6pg3M12nuwExu8D-tkYDv5BE1h2dA1rTOfbHIEta8XTaUC0Et-KgDBM=__;!!A6UyJA!zYKJBkzZPANfqT6kPkY_Mfo8xu_hnCJDzEIYjPMOvqs3MwyZUs0N9FX1Ln1zICtHKJKHC9_zSGk3$ > [Twitter]<https://urldefense.com/v3/__https://cloud.letsignit.com/collect/bc/60e5c62f48323abd316580a3?p=NCQXXscJv3N-mDjmqdZzYH59ppVbYP3afFkR7SxQ1JaS_ev9TYs06R5yG_cSPe6tLuS3Bgn1EjTO39P6hIWtNhqUZ5n-wh878kG0mKc-TDxVGISVA_RnJl21WVuzHCTH_v3e4PfK5YBq_Q228Kqxog==__;!!A6UyJA!zYKJBkzZPANfqT6kPkY_Mfo8xu_hnCJDzEIYjPMOvqs3MwyZUs0N9FX1Ln1zICtHKJKHC36OFkHl$ > [LinkedIn]<https://urldefense.com/v3/__https://cloud.letsignit.com/collect/bc/60e5c62f48323abd316580a3?p=NCQXXscJv3N-mDjmqdZzYH59ppVbYP3afFkR7SxQ1JaS_ev9TYs06R5yG_cSPe6tLuS3Bgn1EjTO39P6hIWtNhqUZ5n-wh878kG0mKc-TDz5UNyOTEm_EvRFXdshn5-xaylm0Ysa1fuL9vCg5uDKfouGPQSgwbQq28Nl7_fXFIA=__;!!A6UyJA!zYKJBkzZPANfqT6kPkY_Mfo8xu_hnCJDzEIYjPMOvqs3MwyZUs0N9FX1Ln1zICtHKJKHCzzSDj-d$ > [Youtube]<https://urldefense.com/v3/__https://cloud.letsignit.com/collect/bc/60e5c62f48323abd316580a3?p=NCQXXscJv3N-mDjmqdZzYH59ppVbYP3afFkR7SxQ1JaS_ev9TYs06R5yG_cSPe6tLuS3Bgn1EjTO39P6hIWtNhqUZ5n-wh878kG0mKc-TDyEop3qI2i2HFrm2U65Sd5oXm55IjnZsXt1s4eREvsJGMpsgNaX2L3OdByrUM3b4Xg=__;!!A6UyJA!zYKJBkzZPANfqT6kPkY_Mfo8xu_hnCJDzEIYjPMOvqs3MwyZUs0N9FX1Ln1zICtHKJKHC3f1vTjU$ > Florian Noel Administrateur Systèmes Et Réseaux [https://urldefense.com/v3/__https://storage.letsignit.com/icons/designer/v2/phone-1.png__;!!A6UyJA!zYKJBkzZPANfqT6kPkY_Mfo8xu_hnCJDzEIYjPMOvqs3MwyZUs0N9FX1Ln1zICtHKJKHCxqW91pG$ ] 02 35 78 11 90 705 Avenue Isaac Newton 76800 Saint-Etienne-Du-Rouvray [Payneo]<https://urldefense.com/v3/__https://cloud.letsignit.com/collect/b/60ed92296e8c02bf93d4f9aa?p=NCQXXscJv3N-mDjmqdZzYH59ppVbYP3afFkR7SxQ1JaS_ev9TYs06R5yG_cSPe6tLuS3Bgn1EjTO39P6hIWtNhqUZ5n-wh878kG0mKc-TDx4rIKe6rk374sFS07v0YLIvIF68SXTHzNmGDb3XO6dLQ==__;!!A6UyJA!zYKJBkzZPANfqT6kPkY_Mfo8xu_hnCJDzEIYjPMOvqs3MwyZUs0N9FX1Ln1zICtHKJKHCyft4U9I$ >
