From mboxrd@z Thu Jan 1 00:00:00 1970 From: Janos Farkas Subject: mdadm -X bitmap status off by 2^16 Date: Tue, 18 Jul 2006 08:46:13 +0200 Message-ID: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline Sender: linux-raid-owner@vger.kernel.org To: linux-raid@vger.kernel.org List-Id: linux-raid.ids 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