Date: Tue, 6 Mar 2007 09:16:45 +0100 From: "Michel, Dietmar" <Dietmar_Michel@bmc.com> To: "Nikos Vassiliadis" <nvass@teledomenet.gr>, <freebsd-questions@freebsd.org> Subject: RE: RAID5 degraded - system hangs Message-ID: <0C398216960631429151B4A4B6B1FC03038CCAB5@fra-ex-01.adprod.bmc.com> References: <0C398216960631429151B4A4B6B1FC03038CCAB0@fra-ex-01.adprod.bmc.com> <200703060948.53818.nvass@teledomenet.gr>
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The Promise Tx4310 has to be a HW raid controller - hopefully ;-)) But to get full access you have to have drivers to support this = hardware. =20 In the ata man pages the controller (chip is PDC40719) is mentioned to = be supported. But not in the RAID5 mode - that=B4s my mistake. =20 I just was realy irritated for after buliding up and even after = rebooting without errors the device ar0 named itself RAID5 ... =20 Maybe I used parts of new code which isn=B4t finished at all .... =20 Thanxs=20 =20 Dietmar =20 ________________________________ From: Nikos Vassiliadis [mailto:nvass@teledomenet.gr] Sent: Tue 3/6/2007 8:48 AM To: freebsd-questions@freebsd.org Cc: Michel, Dietmar Subject: Re: RAID5 degraded - system hangs On Monday 05 March 2007 17:22, Michel, Dietmar wrote: [snip] > Now I made an upgrade using 4 SATA II disks connected to a promise = TX4310 Raid controller. This must be a software RAID controller. It uses software in your OS to do the several RAID levels. The controller simply "acts" as a RAID controller and then passes the real job to the OS. > > Defining a RAID5 a bios level, starting the server and building up the = Raid at OS level: > And now I have a functional Raid named ar0. No you probably don't have a functional RAID5 setup. Please read the ataraid manual page. It says that RAID5 is not supported. [snip] > Any hints? You can use other RAID levels that are supported for your controller. You can also use gmirror or graid3. HTH, Nikos
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