On Thu, Sep 15, 2011 at 3:03 PM, Dan Williams <[email protected]> wrote: > Does it consider the raid5/6 write hole in what it caches? Guess I > need to take a look at the code, but just wondering if it considers > the need to maintain a consistent strip when writing back to raid5/6 > array, or would there still be a need for a separate driver/region of > the SSD for caching that data.
Do you mean - if you're caching a raid5 (not the individual devices, the entire array) the parity blocks? In that case no, bcache will never see them. However, if you're doing writeback caching that won't be a huge problem since you'll end up with more full stripe writes. -- To unsubscribe from this list: send the line "unsubscribe linux-bcache" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
