Hello John, On Thursday, June 21, 2012 01:38:38 PM John Robinson wrote: > On 20/06/2012 18:41, Robert Buchholz wrote: > [...] > > > When repairing a full raid6 with no missing drives > > (raid-devices=n+2), a single inconsistent data block could be > > detected > > Yes, it could. See Neil Brown's blog post as to the many reasons why > this isn't implemented: http://neil.brown.name/blog/20100211050355 Thank you for the pointer, I did not find the article before. I agree with Neil's premise, this should not be run on a mounted raid as changing data blocks can be a problem, and it should not be the default for resync. However, as both Neil and commenters point out, this is a valuable (offline) repair option. Do you know whether the "smart" algorithm or the API necessary to construct a user space program are on the agenda? Cheers Robert
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