To my dismay, I tried (repeatedly) unsuccessfully to implement the scheme below on old Tyan S2895 with two dual-opteron and two new Maxtor 250GB, before moving to the new machine. With the recent amd installer, I tried to set up (manually) the two partitions on both disks to set up raid1.
First, I tried with a 0.2GB partition for boot but I found no way to have lvm for the other partition and where to set the root file system. Then, I tried with a 1GB partition but found no way to have it for both boot and root. In both cases, the installer claimed to have the root file system. What I need to have for the compilations of applications are /home /usr /opt /var /swap. The bad way I used previously, was to start from these partitions and put each on raid. So I finished with so many raid#. thanks francesco On Tue, Mar 3, 2009 at 9:52 PM, Alex Samad <[email protected]> wrote: > On Tue, Mar 03, 2009 at 12:26:27PM +0100, Goswin von Brederlow wrote: >> Francesco Pietra <[email protected]> writes: > [snip] > >> >> That is a lot of raids. Have you ever thought about using LVM? The >> different raid1 will mess up each others assumption about the head >> positioning of the component devices. On read the linux kernel tries >> to use the disk with the shorter seek and assumes the head is where it >> left it on the last access. But if one of the other raids used that >> disk the head will be way off. >> >> I would suggest the following scheme: > > this is what I would recommend as well >> >> sda1 / sdb1 : 100Mb raid1 for /boot (or 1GB for / + /boot) >> sda2 / sdb2 : rest raid1 with lvm >> >> MfG >> Goswin >> >> >> -- >> To UNSUBSCRIBE, email to [email protected] >> with a subject of "unsubscribe". Trouble? Contact [email protected] >> >> > > -- > "Perhaps one way will be, if we use military force, in the post-Saddam Iraq > the U.N. will definitely need to have a role. And that way it can begin to > get its legs, legs of responsibility back." > > - George W. Bush > 03/16/2003 > the Azores, Portugal > > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v1.4.9 (GNU/Linux) > > iEYEARECAAYFAkmtmHwACgkQkZz88chpJ2OpcACgmoZ41ASQaImVnKgcXiovFAya > DKwAnA4YwO7GWaL4QHnx02mSnAQdgmSM > =SAtK > -----END PGP SIGNATURE----- > > -- To UNSUBSCRIBE, email to [email protected] with a subject of "unsubscribe". Trouble? Contact [email protected]
