according to http://linas.org/linux/raid.html: (as of kernel 2.6.26 in July 2008): - For a RAID-1 config with two disks, if the data mis-compare was due to one block being unreadable, then the copy will be made from the remaining, readable block, which should hold good data. If both blocks were readable ( *i.e.* were read from the disk, without the disk indicating any sort of error condition), but there was a mis-compare, then the data from the highest-numbered disk is copied to the other disk. This results in a 50-50 chance that good data was over-written by bad. Furthermore, this is done silently: no syslog messages indicate either a mis-compare, or that a repair action was taken! -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://mailman.mn-linux.org/pipermail/tclug-list/attachments/20130404/88e4fd77/attachment.html>