From mboxrd@z Thu Jan 1 00:00:00 1970 From: Roberto Nunnari Subject: replacing drives Date: Fri, 26 Apr 2013 16:27:01 +0200 Message-ID: <517A8EB5.8080100@supsi.ch> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; 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 Hi all. I'd like to replace two hd in raid1 with larger ones. I could just add the new drives in raid1 and mount it on /opt after a dump/restore, but I'd prefer to just have to drives instead of four.. less noise and less power consumption and noise. The question is: what whould be the best way to go? Tricks and tips? Drawbacks? Common errors? Any hint/advice welcome. Thank you. :-) present HD: two WD caviar green 500GB new HD: two WD caviar green 2TB root@host1:~# uname -rms Linux 2.6.32-46-server x86_64 root@host1:~# mdadm --version mdadm - v2.6.7.1 - 15th October 2008 root@host1:~# cat /proc/mdstat Personalities : [linear] [raid1] [multipath] [raid0] [raid6] [raid5] [raid4] [raid10] md1 : active raid1 sda2[0] sdb2[1] 7812032 blocks [2/2] [UU] md2 : active raid1 sda3[0] sdb3[1] 431744960 blocks [2/2] [UU] md0 : active raid1 sda1[0] sdb1[1] 48827328 blocks [2/2] [UU] unused devices: root@host1:~# parted /dev/sda print Model: ATA WDC WD5000ABPS-0 (scsi) Disk /dev/sda: 500GB Sector size (logical/physical): 512B/512B Partition Table: msdos Number Start End Size Type File system Flags 1 1049kB 50.0GB 50.0GB primary ext4 boot, raid 2 50.0GB 58.0GB 8000MB primary linux-swap(v1) raid 3 58.0GB 500GB 442GB primary ext4 raid root@host1:~# parted /dev/sdb print Model: ATA WDC WD5000ABPS-0 (scsi) Disk /dev/sdb: 500GB Sector size (logical/physical): 512B/512B Partition Table: msdos Number Start End Size Type File system Flags 1 1049kB 50.0GB 50.0GB primary ext4 boot, raid 2 50.0GB 58.0GB 8000MB primary linux-swap(v1) raid 3 58.0GB 500GB 442GB primary ext4 raid root@host1:~# df Filesystem 1K-blocks Used Available Use% Mounted on /dev/md0 48060232 6460476 39158392 15% / none 3052888 272 3052616 1% /dev none 3057876 0 3057876 0% /dev/shm none 3057876 88 3057788 1% /var/run none 3057876 0 3057876 0% /var/lock none 3057876 0 3057876 0% /lib/init/rw /dev/md2 424970552 399524484 3858820 100% /opt Thank you and best regards. Robi