Hi! Another pseudo-problem :) I've just set up a RAID5 array by creating a three-disk one from two disks, and later adding the third. Everything seems normal, but the mdadm (2.5.2) -X output: Filename : /dev/hda3 Magic : 6d746962 Version : 4 UUID : 293ceee6.d1811fb1.a8b316e6.b54abcc7 Events : 12 Events Cleared : 12 State : OK Chunksize : 1 MB Daemon : 5s flush period Write Mode : Normal Sync Size : 292784512 (279.22 GiB 299.81 GB) Bitmap : 285923 bits (chunks), 65536 dirty (22.9%) # for i in hdb3 hdd3 hda3 ; mdadm -X /dev/$i|grep map Bitmap : 285923 bits (chunks), 0 dirty (0.0%) Bitmap : 285923 bits (chunks), 0 dirty (0.0%) Bitmap : 285923 bits (chunks), 65536 dirty (22.9%) # for i in hdb3 hdd3 hda3 ; mdadm -X /dev/$i|grep map Bitmap : 285923 bits (chunks), 1 dirty (0.0%) Bitmap : 285923 bits (chunks), 1 dirty (0.0%) Bitmap : 285923 bits (chunks), 65537 dirty (22.9%) # for i in hdb3 hdd3 hda3 ; mdadm -X /dev/$i|grep map Bitmap : 285923 bits (chunks), 7 dirty (0.0%) Bitmap : 285923 bits (chunks), 7 dirty (0.0%) Bitmap : 285923 bits (chunks), 65543 dirty (22.9%) # for i in hdb3 hdd3 hda3 ; mdadm -X /dev/$i|grep map Bitmap : 285923 bits (chunks), 0 dirty (0.0%) Bitmap : 285923 bits (chunks), 0 dirty (0.0%) Bitmap : 285923 bits (chunks), 65536 dirty (22.9%) # cat /proc/mdstat Personalities : [raid1] [raid6] [raid5] [raid4] md0 : active raid5 hdd3[2] hdb3[0] hda3[1] 585569024 blocks level 5, 64k chunk, algorithm 2 [3/3] [UUU] bitmap: 0/140 pages [0KB], 1024KB chunk Is this going to bite me later on, or just a harmless display problem? Janos - 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