Song Liu <songliubraving@xxxxxx> writes: > Hi Neil, > > Could you please share some insights about kernel and mdadm patches for > journal device in RAID-4/5/6? What shall we do next to move this approach > ahead? I hadn't been looking at the mdadm patches until I was fairly comfortable with the kernel code. I think we have reached that state now and I have just looked at your mdadm patches. These seem quite sensible and thorough - thanks. I have applied them to by 'master' branch. Would you be able to write a few test scripts to go in the 'tests' directory? Some of your changelog comment demonstrated how some commands would work and others would give useful error messages. If there were test scripts which confirmed the code continues to do that (and maybe more) that would be great. Also a section of the md.4 man page (similar to "BITMAP WRITE-INTENT LOGGING" and "BAD BLOCK LIST") which gave a general outline of the purpose, value, and possible costs, of using a journal would be really helpful. Thanks, NeilBrown
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