On Mon, 31 Jan 2011 21:20:55 +0100 Piergiorgio Sartor <piergiorgio.sartor@xxxxxxxx> wrote: > Hi all, > > some times ago, I think was Neil, it was mentioned > about the possibility to access consistently a RAID-6 > array from user space, in order to be able to perform > some checks, like the notorius "which HDD has wrong data". > > Is there any reference or documentation or source code > which can be taken as example for such a case? > Look in the mdadm source code, particularly at restripe.c Also make test_stripe make a program the the test suite uses for verify data correctness. That should give you enough hints to get you started. NeilBrown -- 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