On Wed, Jul 6, 2011 at 12:33 PM, Simon Matter simon.matter@invoca.ch wrote:
On Wed, Jul 6, 2011 at 4:27 AM, Joseph L. Casale jcasale@activenetwerx.com wrote:
Please help me understand.
If the device requires an additional driver, unless its packaged as a dd for use at install, how can you install and then add a driver?
Disable RAID mode, set it to AHCI, then Anaconda will see all the individual discs at which point during install you can choose to setup Linux md raid, far simpler and almost always better than software raid IMHO.
Recovery and monitoring facilities are built into Linux, life's just easier... _______________________________________________ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Hi Joseph L Casale
That thing is a software raid setup iirc, although there is an rpm for it post install, you could use the ddkit from rhel to make a dd image but frankly I would just use mdraid, turn off the riad setup and just use AHCI.
Thanks for the quick reply and explanation. You said use dd kit from rhel and create a linux device driver image and supply drivers during OS installation. dd command i suppose. Please further suggest.
I have extracted the rpm file and it has hpahcisr.o file. Am i understanding you correctly ?
Hi Kaushal,
Maybe there's some kind of misunderstanding. The term software raid can be misleading because IMHO mdraid is also an software raid. So let's use the term fakeraid for those controllers which make one believe they do everything in their hardware but in fact simply do some kind of software raid in thier proprietary OS driver.
So, what you should try to find out is whether your controller is not usable in raid mode because the OS has no support for it (seems obvious) or if you set the controller into AHCI mode in BIOS, if the controller is usable by the OS without any additional driver.
So, go to the BIOS and set the disk controller to AHCI mode (if such setting exists) and try to install the OS. If you'll see any disks in this configuration, the just go with mdraid and you're done.
Simon
Hi Simon,
Thanks for the explanation. Please help me understand why do Hardware Vendors provide onboard storage raid controller chipset on the motherboard (fakeraid if its a software raid.). Is it a marketing term for selling servers. Since it does not add value at all strictly speaking due to the fact that the OS is unable to determine the Logical drives.
Awaiting your earnest reply.
Regards
Kaushal