On 11/05/2011 9:31 AM, NeilBrown wrote:
When it finished you will have a perfectly functional RAID6 array with full redundancy. It might perform slightly differently to a standard layout - I've never performed any measurements to see how differently. If you want to (after the recovery completes) you could convert to a regular RAID6 with mdadm -G /dev/md0 --layout=normalise --backup=/some/file/on/a/different/device but you probably don't have to.
This makes me wonder. How can one tell if the layout is 'normal' or with Q blocks on a single device?
I recently changed my array from RAID5->6. Mine created a backup file and took just under 40 hours for 4 x 1Tb devices. I assume that this means that data was reorganised to the standard RAID6 style? The conversion was done at about 4-6Mb/sec.
Is there any effect on doing a --layout=normalise if the above happened? -- Steven Haigh Email: netwiz@xxxxxxxxx Web: http://www.crc.id.au Phone: (03) 9001 6090 - 0412 935 897 Fax: (03) 8338 0299 -- 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
