Messages in this thread | | | From | Alex Austin <> | Date | Thu, 1 Sep 2016 16:43:07 -0500 | Subject | Block-level access |
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Hello, What is the most performant way to directly interface with an attached hard drive? I've so far used read()/write() on /dev/sd_ but I find error handling exceedingly difficult, as I don't always even get errors reported, even if the open() call includes O_DIRECT. I've also used ioctl(SG_IO), but find that it's extremely slow due to the lack of queuing support in the API. Is there a mid-level API that will get me decent error handling while allowing command queuing, or do I just need to make multiple threads all doing separate SG_IO ioctls?
Thank you, - Alex Austin
-- Intelligence is knowing that a tomato is a fruit; wisdom is knowing that it doesn't go in a fruit salad; charisma is selling a tomato-based fruit salad.
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