Il Mar 7 Mag 2019, 23:50 Dmitry Filonov <filonov@hkl.hms.harvard.edu> ha scritto:

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But if I try creating new disk image from the oVirt GUI - I get  preallocated volume. No matter if I select "thin provision" or "Preallocated" I always get preallocated volume created. 

The engine.log says - 

2019-05-07 17:14:20,562-04 INFO  [org.ovirt.engine.core.vdsbroker.irsbroker.CreateImageVDSCommand] (default task-20) [bbd94792-2f86-44eb-9334-807dd44d0742] START, CreateImageVDSCommand(

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imageType='Preallocated', 

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Is there any tweak I didn't notice to make things actually what it suppose to be doing?

oVirt 4.3.3.5-1.el7

glusterfs 5.5-1.el7

CentOS Linux release 7.6.1810

Thank you!

It seems this is the third separate thread regarding the same problem since 25/04 but I have not seen any answer (positive or negative) from one of the oVirt developers / maintainers yet on the list...

(perhaps right now probably involved in Red Hat Summit.. )

Anyway I see that Strahil already opened a bug here:

https://bugzilla.redhat.com/show_bug.cgi?id=1704782

And there is useful information inside it, such as that the problem is only on gluster and only if disk is created from webadmin GUI, while from rest API is ok.

Also from 4.2 to 4.3 disk format (only on gluster) changed default from thin provisioned to preallocated.

Hih,

Gianluca