fault injection should honor page sizes

[tjungblu]

Just wanted to bring etcd-io/bbolt#567 (comment) back to your attention - is there a way I can configure the fault injection to honor the 4k page size boundaries?

Seems when I write 4k it will always fail at 2k. Also would love to hear your opinion on the fix I proposed in etcd-io/bbolt#570 - do you think this would mitigate the init issue for the failure modes you're trying to inject?

[mj-ramos]

Hi! Sorry for the delayed response. I left a comment on etcd-io/bbolt#567 explaining how to split the write into 4k chunks. The key is to configure the parts parameter with the value 4.
I believe that using a temporary file and renaming it would be the best solution :)