On Tuesday 07 August 2007 11:34, Logu wrote: > We have a machine with FC6 installed which has hardware HostRaid > (Adaptec ASC-29320 U320). > And the machine has two SCSI disks connected to the HostRaid adapter > and it is configured for RAID-0 (Striping).
Pls. tell us how you came to the conclusion that your 2 drives are configured as RAID0? > Each conneted disk is of 73 GB. When I issue fdisk -l it shows both > sda and sdb as 73 GB each I suspect your disk drives are defined as JBOD and not configured as a RAID0 volume in your RAID controller. > Now my question is how do I access the disk as RAID? What device name > should I use to access the RAID. I checked the dmesg output but could > not figureout the device name. >From my experience with "true" HW RAID controllers, the disk drives are configured into a RAID volume *by* the RAID controller. You need to go into the controller's BIOS utility and define the RAID volume. The controller will then present the RAID volume to the OS as monolith disk drive e.g. in your case of RAID0 /dev/sda would be around 146GB. In the OS you would access this volume as /dev/sda. The fact that your kernel is reporting sda and sdb makes me think your disks are JBOD in your controller. > I also tried disabling Host RAID on the bios and created linux > partitions on the sda and sdb and tried creating ext3 filesystem. But > the system gives error as follows > # mkfs.ext3 /dev/sdb1 > mke2fs 1.39 (29-May-2006) > /dev/sdb1 is apparently in use by the system; will not make a > filesystem here! > > Please help me what procedure I should follow to configure the > hardware raid in fc6 and what device I should use or how do I use the > disks without RAID. I would suggest you go the controller's utility and see how your disk drives have been configured. Make sure both drives are part of a RAID0 volume. There is nothing special you need to do in the OS if you have truly configured the disks as RAID0 in your controller. When the installer gets to disk druid you should see one hard disk /dev/sda approx. 146GB. You can slice this into whatever Linux partitioning schemes you want. HTH, -- Arun Khan "They alone live who live for others, rest are more dead than alive." - Swami Vivekanada ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ _______________________________________________ linux-india-help mailing list linux-india-help@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-india-help
