David thanks for this additional follow-up. I was mistaken about the LSI card, it was actually a SiL 3124. The OS didnt see the raid as one drive, so its another one of these fake raid cards. I did get a good image.so Im going to re-os this weekend and use the software raid method. One last question, is it acceptable to let graphical installers setup the software raid for me or should I use one disk and create a raid mirror later once the OS is setup? On Fri, Apr 14, 2017 at 12:43 AM, David C. Rankin <drankinatty@xxxxxxxxxxxxxxxxxx> wrote: > On 04/12/2017 10:36 AM, linuxknight wrote: >> Thank you Reindl, Using your method would I be able to apply this IMG >> file to a fresh raid1 mirror and still have it be bootable? >> >> The reason I ask is I was looking at this guide, >> https://www.data-medics.com/forum/how-to-clone-a-hard-drive-with-bad-sectors-using-ddrescue-t133.html >> It has a method to transfer drive to drive. I was thinking I would >> create the fresh RAID mirror on the dedicated LSI card, then ddrescue >> possibly bad drive to the new raid mirror. Is this a bad idea? > > Take the dd advise, but... you initially indicated: > > <quote> > I was moving a server with a raid1 configuration, > controlled by a Intel Corporation 82801 SATA RAID Controller > </quote> > > Now you are saying > > <quote> >> It has a method to transfer drive to drive. I was thinking I would >> create the fresh RAID mirror on the dedicated LSI card > </quote> > > Note: the Intel and LSI cards may not have compatible RAID metadata. (That is > one of the major benefits of using linux-raid (software RAID) you are not > constrained by differing hardware RAID specifications.) > > You also mention "to a fresh raid1 mirror and still have it be bootable?" If > you image the drive with dd, the mbr or bootloader will still be present on in > the image and on the drive, so as long as you can tell the OS to boot from > that drive you should be fine (as long as the controller can access the > information) > > A good general howto on setting up linux-raid is > https://wiki.archlinux.org/index.php/RAID > > -- > David C. Rankin, J.D.,P.E. > -- > To unsubscribe from this list: send the line "unsubscribe linux-raid" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
