GNOME Bugzilla – Bug 351126
Promise PDC20276 OEM IDE RAID chip incompatibility
Last modified: 2009-03-05 17:51:39 UTC
Please describe the problem: I have a RAID 0 array setup using the Promise PDC20276 chip on my Asus A7V333 Deluxe motherboard, with Windows XP setup on a NTFS partition. Using GParted, the drives are shown seperately as unformatted. Steps to reproduce: 1. On a motherboard with the PDC20276 chip, launch GParted (LiveCD or under linux) 2. The drives will not show up as a singe volume, but as seperate drives. Actual results: Already described. Expected results: If at all possible it would be best if the RAID array could be recognized, and worked with as the single volume that a RAID 0 array is used as. Does this happen every time? yes Other information: PLEASE if you are willing to work on this, contact me. I'm more than willing to help. If I could resize my NTFS partion on my RAID array, I could make room for linux and start making the transition. I'd be very happy to do testing debugging, whatever it takes to get this working. Thanks for a great overall program!
yep, at the moment al (semi)soft raidsetups are not reckognized as being RAID but just a separate volumes. There are some plans for RAID support (detection, creation, resize) but the problem (as always) is time. Please let me know if you are willing to work on this so we can discuss the several aspects of implementing this.
(In reply to comment #1) > yep, at the moment al (semi)soft raidsetups are not reckognized as being RAID > but just a separate volumes. > There are some plans for RAID support (detection, creation, resize) but the > problem (as always) is time. > > Please let me know if you are willing to work on this so we can discuss the > several aspects of implementing this. > Yes I'm very happy to work with you on this. Sorry I didn't reply sooner I was on vacation. Anyway, I found this site with basic information for this chip: http://www.promise.com/product/oem_ataraid_pdc20276_eng.htm They've had Linux support for a long time, but it looks like it's old stuff, and hasn't been updated to work with the more recent kernels in a long time. Still I think there is source available which could be very helpful. BTW I thought this was a fully hardware raid. Although I know it does require a driver to work with windows...
I have the same situation with nVidia nforce pro (2200 & 2050) chipsets. I setup a RAID 0 to do a temporary clone of another RAID(LSI HW - PCIx card) so I could enlarge the disks on the HW RAID. Gparted does not recognize the RAID volume but does recognize the (3) disks. The disks are SATA setup as 240GB RAID 0 using the nVidia BIOS. I need to use nVidia (as opposed to Linux SW RAID) for compatibility across MS and Linux OS. As you know this is a device mapper mount and uses the nvidia driver module. Both fdisk & cfdisk recognize the SW RAID disk. Currently using Mandriva 2008 x64 and MS WinXPx64 multi-boot system. gparted version: 0.3.5 /usr/lib64/libparted-1.8.so.7 /usr/lib64/libparted-1.8.so.7.0.0 The Linux OS will change very soon to a more recent version. I can, if you need it, try to assist so that gparted(libparted) will work with nvidia. email me...
Thank you Isaac and Ric for your comments and offers of assistance. Since I believe that this bug refers to GParted not supporting DMRAID /dev/mapper devices, I am marking it as a duplicate of an earlier reported bug. If you are still able to help with testing a preliminary solution, I would very much appreciate your assistance. You can find out more regarding testing preliminary dmraid support in GParted at: http://bugzilla.gnome.org/show_bug.cgi?id=317262#c36 It would beneficial to track all dmraid /dev/mapper device support comments in bug #317262. *** This bug has been marked as a duplicate of 317262 ***