[Gluster-devel] Is it safe to lower SHARD_MIN_BLOCK_SIZE?

Dmitry Antipov dmantipov at yandex.ru
Tue Apr 14 10:09:23 UTC 2020

On 4/14/20 12:16 PM, Krutika Dhananjay wrote:

> So SHARD_MIN_BLOCK_SIZE is currently hardcoded to 4MB.
> If you want to reduce that value further (purely for the sake of testing, not recommended otherwise), you will need to change its value in the source code here - 
> https://github.com/gluster/glusterfs/blob/43ed6fa34b259b568ae1442b65a5004a894a2654/xlators/features/shard/src/shard.h#L21
> and recompile the code. And then set features.shard-block-size to whatever value you intend to use.
> I'd also suggest disabling performance.quick-read before you run your tests.


https://github.com/gluster/glusterfs/issues/1148 updated, looks like a heap corruption.


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