When one is using a bitmap-enabled raid1 (or raid5 or whatever), MD prints messages like this to the kernel log when a previously-used device is re-added: Dec 11 08:59:40 turnip kernel: md: recovery of RAID array md10 Dec 11 08:59:40 turnip kernel: md: minimum _guaranteed_ speed: 1000 KB/sec/disk. Dec 11 08:59:40 turnip kernel: md: using maximum available idle IO bandwidth (but not more than 200000 KB/sec) for recovery. Dec 11 08:59:40 turnip kernel: md: using 128k window, over a total of 78123968 blocks. Dec 11 08:59:41 turnip nbd0-frank: mdadm: /dev/nbd0 attached to /dev/md10 which is already active. Dec 11 09:00:22 turnip kernel: md: md10: recovery done. What would be nice is the addition of something like this: Dec 11 08:59:40 turnip kernel: md: bitmap shows 27 128K blocks requiring sync or Dec 11 08:59:40 turnip kernel: md: bitmap shows 3456K blocks requiring sync or some other analogue. Seem reasonable? -- Jon -- 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
