Hello. To provide some updates on my earlier questions (for future generations googling through the archives). > So, my question is, does anyone have an idea on what could cause this, and > what would be the best way to diagnose/fix the lockup problem? Thanks in > advance. Since then I have re-created the original 3-device RAID5, it synced without lockups. Perhaps I should write them off as some hardware bug, especially considering that the nForce chipsets aren't exactly known as the gold standard of bug-free design. > So why the same RAID5 to RAID6 conversion started so differently in these two > cases? And is it even possible to reshape RAID5 to RAID6 while simultaneously > adding a disk, without overwriting all the other disks' contents (it surely > looked like this is what was happening in the first case)? Yes it is possible; I should have read about the --layout=preserve option in the mdadm man page. -- With respect, Roman
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