Hey Alex, you too, thanks for writing. I'm on 64mb as per default for ovirt. We tried no sharding, 128mb sharding, 64mb sharding (always with copying the disk). There was no increase or decrease in disk speed in any way. Besides losing HA capabilites, what other caveats? -Chris. On 24/03/2020 19:25, Alex McWhirter wrote:
Red hat also recommends a shard size of 512mb, it's actually the only shard size they support. Also check the chunk size on the LVM thin pools running the bricks, should be at least 2mb. Note that changing the shard size only applies to new VM disks after the change. Changing the chunk size requires making a new brick.
libgfapi brings a huge performance boost, in my opinion its almost a necessity unless you have a ton of extra disk speed / network throughput. Just be aware of the caveats.
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