> > recall that it has been added with Wheezy. But let me put forward > that it doesn't really matter. If you have RAID then you know you > want grub on both disks. After installing simply run the grub install > script against both disks manually and then you will be assured that > it has been installed on both disks. >
I had problems with that methodology and was unable to detect my error. >From a thread on debian dated Mar 2, 2013: > I carried out a reinstall of amd64 wheezy > on the machine with new HD. md0 (boot, ext20, md1 (LVM, home, usr, > etc). GRUB came installed on /dev/sda only > > Then the command > > grub-install /dev/sdb > was reported by complete installation. No error, no warning. > > On rebooting, GRUB was no more found. Then entering in > > grub rescue > > > prefix/root/ were now wrong. > > Now I am in the same situation, two servers with mirroring raid, grub on /dev/sda only. Identical data on both servers to cope with grub on one disk only. Not smart from my side. > I agree with the other responder. It is unlikely IMNHO that you want > RAID0 (striping) for the system disk. You most likely want RAID1 > (mirroring) instead. The answer above is the same regardless. If you > are thinking striping for performance instead I recommend using an SSD > for the system disk. Ah! my mistake. Sure, raid1 (mirroring) thanks francesco On Fri, Oct 4, 2013 at 12:22 AM, Bob Proulx <b...@proulx.com> wrote: > Francesco Pietra wrote: > > Did you use a recent version of the installer? What I would like to know > - > > before reinstalling everything on my servers - is whether the option to > set > > grub on both disks of raid 0 has now been introduced. > > I recall that it has been added with Wheezy. But let me put forward > that it doesn't really matter. If you have RAID then you know you > want grub on both disks. After installing simply run the grub install > script against both disks manually and then you will be assured that > it has been installed on both disks. > > I agree with the other responder. It is unlikely IMNHO that you want > RAID0 (striping) for the system disk. You most likely want RAID1 > (mirroring) instead. The answer above is the same regardless. If you > are thinking striping for performance instead I recommend using an SSD > for the system disk. > > Bob >
