From mboxrd@z Thu Jan 1 00:00:00 1970 From: Kenneth Aar Subject: mdadm what does it mean Date: Thu, 20 Mar 2008 00:01:00 +0100 Message-ID: <47E19B2C.2040901@grafikern.no> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: Sender: linux-raid-owner@vger.kernel.org To: linux-raid@vger.kernel.org List-Id: linux-raid.ids Hi I am using mdadm to manage my RAID arrays, but cant seem to find an easy to understand or concise explanation of what the different parameters mean when I write: cat /proc/mdstat in the terminal. The ones I can't even guess are: super bitmap pages chunk Could someone please point me to such a place that will tell me this, or if you are blessed with fortuitous amounts of time explain it to me in an email. My output when I write cat /proc/mdstat today is: -------- Personalities : [raid1] md0 : active raid1 sda1[0] sdc1[1] 488383864 blocks super 1.0 [2/2] [UU] bitmap: 2/466 pages [8KB], 512KB chunk md3 : active raid1 hdb4[0] sdb4[1] 183711232 blocks [2/2] [UU] md1 : active raid1 hdb2[0] sdb2[1] 104320 blocks [2/2] [UU] md2 : active raid1 sdb3[0] hdb3[1] 10490372 blocks super 1.0 [2/2] [UU] bitmap: 0/161 pages [0KB], 32KB chunk unused devices: -------- Any help or pointers appreciated. I tried reading through the man pages but I am not any wiser. Or it could be that I just missed the relevant sections. -- Mvh Kenneth Aar Grafikern @: kenneth@grafikern.no Nett: http://www.grafikern.no Fasttelefon(IP-telefon): 62 11 17 01 Mobil: 92 89 99 89 Faks: 92 57 57 25