Maarten, I was thinking again! You plan on using an 80 gig disk as a spare disk. 2 40 Gig partitions. If both spares end up in the same RAID5 array, that would be bad! mdadm supports spare groups, you should create 2 groups, put 1 spare partition in each group. Then put 1/2 of your RAID5 arrays in each group. Guy -----Original Message----- From: linux-raid-owner@xxxxxxxxxxxxxxx [mailto:linux-raid-owner@xxxxxxxxxxxxxxx] On Behalf Of maarten Sent: Saturday, January 08, 2005 7:19 AM To: linux-raid@xxxxxxxxxxxxxxx Subject: Re: Spares and partitioning huge disks On Saturday 08 January 2005 11:22, Mario Holbe wrote: > Guy <bugzilla@xxxxxxxxxxxxxxxx> wrote: > > Each of his six RAID5 arrays will only use 1 partition of each physical > > disk. > > His plan is to combine the 6 arrays with LVM or a linear array. > > Ah, I just missed that part, sorry & thanks :) > I agree with you then - it's something like a RAID5+0 (analogue > to RAID1+0) then and it *should* work just fine :) Yes, it should. And the array does indeed work, but I'm plagued with a host of other -unrelated- problems now. :-( First, I had to upgrade from kernel 2.4 to 2.6 because I lacked a driver for my SATA card. That was quite complicated as there is no official support to run 2.6 kernels on Suse 9.0. It also entailed migrating to lvm2 as lvm is not part of 2.6. But as it turns out, the 2.6 kernel I eventually installed does somehow not initialize my bttv cards correctly and also ALSA has problems. So now I'm reverting back to a 2.4 kernel which should support SATA, version 2.4.28, which I'm building as we speak from vanilla kernel sources... But that has a lot of hurdles too, and I'd still have to find an ALSA driver for that as well. Worse, I fear that I will have to migrate back to lvm1 now too, so that means copying all the 200 Gig data _again_, which by itself takes about 10 hours... :-( Ah, if only I would have bought ATA disks instead of SATA ! I've thought about putting the disks in another system and just use them over NFS, but that would mean another system that is powered for 24/7, and that gets to be a bit much. Reinstalling from scratch with a 9.1 / 2.6 distro is a worse option still, as mythtv carries such a bucket full of obscure dependencies I'd hate to install all that again. In other words, I'm not there yet, but at least that has little or nothing to do with lvm or md. But this does 'suck' a lot. Maarten -- - 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
