Hi, one more thing I see right now: mdadm --examine-bitmap for sd[ab]2 mdadm --examine-bitmap /dev/sda2 Filename : /dev/sda2 Magic : 6d746962 Version : 4 UUID : 54db81a7:b47e9253:7291055e:4953c163 Events : 2772 Events Cleared : 2772 State : OK Chunksize : 512 KB Daemon : 5s flush period Write Mode : Normal Sync Size : 312464000 (297.99 GiB 319.96 GB) Bitmap : 610282 bits (chunks), 0 dirty (0.0%) mdadm --examine-bitmap /dev/sdb2 Filename : /dev/sdb2 Magic : 6d746962 Version : 4 UUID : 54db81a7:b47e9253:7291055e:4953c163 Events : 2772 Events Cleared : 2772 State : OK Chunksize : 512 KB Daemon : 5s flush period Write Mode : Normal Sync Size : 312464000 (297.99 GiB 319.96 GB) Bitmap : 610282 bits (chunks), 22506 dirty (3.7%) Is it the last line a bit strange? And this is somehow persistent, i.e. after consecutive "examinations" the dirty status of sdb2 does not change, while sda2 goes a little bit up and down. This, BTW, is after a reboot, so a "clean" machine, and without "smartd". bye, -- piergiorgio -- 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