[Openstack-operators] 4K block size

Tim Bell Tim.Bell at cern.ch
Mon Apr 23 17:46:40 UTC 2018

Has anyone experience of working with local disks or volumes with physical/logical block sizes of 4K rather than 512?

There seems to be KVM support for this (http://fibrevillage.com/sysadmin/216-how-to-make-qemu-kvm-accept-4k-sector-sized-disks) but I could not see how to get the appropriate flavors/volumes in an OpenStack environment?

Is there any performance improvement from moving to 4K rather than 512 byte sectors?


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