This is on a 3-node hyperconverged environment with glusterfs.
After upgrading to oVirt 4.3.3 (from 4.3.2) creating a new disk takes very long (hours for a 100GByte disk, making it essentially impossible to create a new disk image).
In the UI the default is "preallocated" but changing it to thin provision does not make any difference. Regardless of this setting, an fallocate process gets started on the SDM host:
/usr/bin/python2 /usr/libexec/vdsm/fallocate 107374182400 /rhev/data-center/mnt/glusterSD/s-vmhost2-ovir.t...
Using fallocate to create a file directly on the underlying file system is fast. Using it to create a file through the glusterfs fuse mount is very slow.
Thanks for any insights.
Steffen
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