From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tejas Rao Subject: scsi_debug support Date: Thu, 14 Jan 2016 19:22:05 -0500 Message-ID: <56983BAD.9040308@bnl.gov> 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 Are scsi_debug devices supported with linux raid. I cannot seem to create a basic array. [root@temp01 ~]# modprobe scsi_debug add_host=2 max_luns=3 num_tgts=4 dev_size_mb=10240 [root@temp01 ~]# lsscsi | grep -e sda -e sdb [8:2:0:0] disk IBM ServeRAID M5110e 3.34 /dev/sdbm [8:2:1:0] disk IBM ServeRAID M5110e 3.34 /dev/sdbn [52:0:0:0] disk Linux scsi_debug 0004 /dev/sda [52:0:0:1] disk Linux scsi_debug 0004 /dev/sdb [root@temp01 ~]# fdisk -l /dev/sda Disk /dev/sda: 10.7 GB, 10737418240 bytes 255 heads, 63 sectors/track, 1305 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 32768 bytes Disk identifier: 0x00000000 [root@temp01 ~]# mdadm --create --verbose /dev/md0 --level=0 --raid-devices=2 /dev/sda /dev/sdb mdadm: super1.x cannot open /dev/sda: Device or resource busy mdmon: ddf: Cannot use /dev/sda: Device or resource busy mdmon: Cannot use /dev/sda: It is busy mdadm: cannot open /dev/sda: Device or resource busy [root@temp01 ~]# [root@temp01 ~]# mdadm -V mdadm - v3.3 - 3rd September 2013 [root@temp01 ~]# uname -a Linux temp01.rcf.bnl.gov 2.6.32-573.12.1.el6.x86_64 #1 SMP Mon Nov 23 12:55:32 EST 2015 x86_64 x86_64 x86_64 GNU/Linux [root@temp01 ~]#