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<div style="direction:ltr; font-family:Tahoma; color:#000000; font-size:10pt">Hello,<br>
<br>
I am trying to understand how opennebula handles the different image types. So I attach a volatile disk to my vm:<br>
<br>
DISK = [ TYPE = "fs",<br>
SIZE = 40000,<br>
FORMAT = "qcow2",<br>
DRIVER = qcow2]<br>
<br>
1.: I have to set FORMAT = "qcow2" so qemu-img create is used to create the image file. But this way I can not specify a filesystem to be created, right? I have to manually format the disk after vm booted (of curse I can use contextualisation to do this part).
Is there a way to tell opennebula to create qcow2 img and then format it with ext3?<br>
<br>
2.: The main reason why I want to use qcow2 is thin provisioning in the meaning of empty disk does not use $max_size at our storage. For testing I created a disks like:<br>
<br>
DISK = [ TYPE = "fs",<br>
SIZE = 40000,<br>
FORMAT = "ext3"] <br>
<br>
DISK = [ TYPE = "fs",<br>
SIZE = 40000,<br>
FORMAT = "raw"]<br>
<br>
I saw that even this disks only took ~750Mb on our NFS server. Can someone explain why, I expected that these raw (or raw with ext3 filesystem on it) will take the whole 40k Mb on our storage.<br>
<br>
3.: The transfer manager ist attached to a datastore and not to a image. So I can not put qcow2 and raw images into the same datastore. Is there a reason for that? Why can't we attach the tm to a image instead of datastore? but I can put qcow2 images into shared
tm datastore if the vm template overrides this by setting driver=qcow2, right?<br>
<br>
Up to now I only thought about different datastores are different storage locations and different redundancy zones/slas/performance classes. Any clearification is appreciated<br>
<br>
Thanks for your help,<br>
Nils Schröder<br>
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Persönlich haftende geschäftsführende Gesellschafterin: Neumüller CeWe Color Stiftung, Oldenburg<br>
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<br>
Persönlich haftende Gesellschafterin: CeWe Color Holding AG, Oldenburg, Registergericht Oldenburg HR B 2956<br>
Vorstand: Dr. Rolf Hollander, Vorsitzender; Andreas F.L. Heydemann, Dr. Reiner Fageth, Dr. Olaf Holzkämper<br>
Aufsichtsrat: Otto Korte, Vorsitzender<br>
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