From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tomasz Chmielewski Subject: way too high reconstruction speed - bug? Date: Thu, 10 Aug 2006 11:48:25 +0200 Message-ID: <44DB00E9.8020000@wpkg.org> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-2; format=flowed Content-Transfer-Encoding: 7bit Return-path: Sender: linux-raid-owner@vger.kernel.org To: linux-raid@vger.kernel.org List-Id: linux-raid.ids I noticed that I have a wrong reconstruction speed when looking at /proc/mdstat: # cat /proc/mdstat Personalities : [raid0] [raid1] [raid10] md11 : active raid10 sda2[0] sdd2[3] sdc2[2] sdb2[1] 779264640 blocks super 1.0 64K chunks 2 near-copies [4/4] [UUUU] [===>.................] resync = 16.4% (127955392/779264640) finish=4.1min speed=2588238K/sec 2588238K/sec is about 100 more to what I used to see before. Should I start to worry? I'm using kernel 2.6.16.27 on ARM CPU. [42949428.580000] md: bind [42949428.580000] md: bind [42949428.590000] md: bind [42949428.590000] md: bind [42949428.590000] md: md11: raid array is not clean -- starting background reconstruction [42949428.620000] raid10: raid set md11 active with 4 out of 4 devices [42949428.630000] md: syncing RAID array md11 [42949428.630000] md: minimum _guaranteed_ reconstruction speed: 1000 KB/sec/disc. [42949428.640000] md: using maximum available idle IO bandwidth (but not more than 200000 KB/sec) for reconstruction. [42949428.650000] md: using 128k window, over a total of 779264640 blocks. [42949428.650000] md: resuming recovery of md11 from checkpoint. -- Tomasz Chmielewski http://wpkg.org