In the past I'd only worked with software raid5, it used the temporary file for a brief period at the beginning and then it was all disk-bound. I recently started a raid-6 takeover of one of my larger raid-5 arrays, it is running around 1/10th to 1/20th the speed I expect: 2909829120 blocks super 1.1 level 6, 128k chunk, algorithm 18 [8/7] [UUUUUUUU] [=>...................] reshape = 7.2% (35359488/484971520) finish=11057.6min speed=677K/sec I suspect this is because another array sharing the same devices is where I put the temporary file, and further that it might be waiting for complete hardware syncs before proceeding. If that's the case I expect that using a small, currently unused, area on unrelated block devices would speed the operation up by at least 5x. Can I safely pause the current restripe process ( 1060 pts/... SL 21:28 mdadm -G /dev/md52 -l6 --backup-file=/md52 ) with something like kill 1060 and then re-invoke it with the backup file in another location? Or would it be this increadiably slow anyway? -- 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
