On 06/29/2017 06:31 PM, Coly Li wrote:
On 2017/6/29 下午11:15, Avi Kivity wrote:
On 12/08/2016 06:44 PM, Coly Li wrote:
On 2016/12/8 上午12:59, Shaohua Li wrote:
On Wed, Dec 07, 2016 at 07:50:33PM +0800, Coly Li wrote:
[snip]
Thanks for doing this, Coly! For raid0, this totally makes sense. The
raid0
zones make things a little complicated though. I just had a brief
look of your
proposed patch, which looks really complicated. I'd suggest something
like
this:
1. split the bio according to zone boundary.
2. handle the splitted bio. since the bio is within zone range,
calculating
the start and end sector for each rdev should be easy.
Hi Shaohua,
Thanks for your suggestion! I try to modify the code by your suggestion,
it is even more hard to make the code that way ...
Because even split bios for each zone, all the corner cases still exist
and should be taken care in every zoon. The code will be more
complicated.
Hi Coly,
Did you manage to complete this patch? We are seeing its effect, not
only with mkfs, but also with fstrim(8).
Hi Avi,
Shaohua makes another much better patch, which is merged into mainline
kernel in v4.12-rc2.
The commit is '29efc390b946 ("md/md0: optimize raid0 discard handling")'.
Hope this is informative.
Thanks a lot, that's great news.
--
To unsubscribe from this list: send the line "unsubscribe linux-raid" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
