Re: root-raid howtos

1999-02-05 Thread Michael
> > I think we're talking cross purposes! > > I was trying to say that if lilo could do RAID( 1 ) then you could > have a 5(say) way mirror for the 10meg /boot partition... then lilo > would be on all the disks... then you could use all 5 disks in a > raid5 for / > > On Fri, 5 Feb 1999, m. alla

Re: root-raid howtos

1999-02-05 Thread m. allan noah
now we are talking about the same thing, black sabbath albums aside yes, under raid1, all the partitions would be identical in the area where the kernels are. however, you still have to update the MBR which is outside the raid space. this would require copying that block from the first disk a

Re: root-raid howtos

1999-02-05 Thread A James Lewis
I think we're talking cross purposes! I was trying to say that if lilo could do RAID( 1 ) then you could have a 5(say) way mirror for the 10meg /boot partition... then lilo would be on all the disks... then you could use all 5 disks in a raid5 for / On Fri, 5 Feb 1999, m. allan noah wrote: > w

Re: root-raid howtos

1999-02-05 Thread m. allan noah
what you mention is not possible for the reasons i outlined on non-raid1. under raid 5- the /boot directory inside the root partition does not exist on everydisk. it is striped across multiple disks with a parity stripe on one. lilo would have to pull blocks from different disks, and if one was m

Re: root-raid howtos

1999-02-05 Thread steve rader
> From: steve rader > Am I following this correctly: in this senario, are /boot and > /boot1 non-raid "stub root" filesystems with kernel(s) for > launching the "real" root-raid1 system with one or the other of > the root-raid1 disks offline? That would be pretty sweet eh. > If so, what doe

Re: root-raid howtos

1999-02-05 Thread steve rader
The production systems I'm adminin' have very static root filesystems so, for now, I'm converging on the conclusion that having two bootable roots and mirrored non-roots is the cleanest setup. I'm using 2.0.36 + latest aic7xxx + raidtools 0.42. I assume I should also apply raid0145-19990128-2.0

Re: root-raid howtos

1999-02-05 Thread Michael
> > From: Michael > > The Root Raid HOWTO is seriously out of date and is based on the 0.42 > > raid tool set. The current .9x tool set is different in it's setup > > and configuration. Raid is still alpha but seems to be pretty stable now > > with a real nice feature set. I will update th

Re: root-raid howtos

1999-02-05 Thread A James Lewis
Lilo being raid1 capable would be cool, it would be simple enough to have a 10 meg mirror to have /boot on then / could be mounted from a raid5 or somthing... might even be cool to have the mirror across each disk in the raid5 then you could guarantee it would find one and boot no matter whic

Re: root-raid howtos

1999-02-05 Thread Jarno Lähteenmäki
On Fri, 5 Feb 1999, Osma Ahvenlampi wrote: > steve rader wrote: > > Is it safe to assume 2.0.36 is more stable with 0.9x than > > with 0.42? > > Well, I've run a busy file server with 2.0.3x and 0.9x RAID patches from > november/december in uninterrupted production use without a single > problem

Re: root-raid howtos

1999-02-05 Thread Osma Ahvenlampi
steve rader wrote: > Is it safe to assume 2.0.36 is more stable with 0.9x than > with 0.42? Well, I've run a busy file server with 2.0.3x and 0.9x RAID patches from november/december in uninterrupted production use without a single problem (at RAID-5). I don't know about the stability of 0.42, bu

Re: root-raid howtos

1999-02-05 Thread m. allan noah
ok- the main point with booting is thus- with the new raid code, you can start raid from the kernel without any utils on the disk. meaning, all you have to do is get the kernel into ram, and jump to its starting address. this is what lilo is for, along with loadlin, etc. they are needed cause the

Re: root-raid howtos

1999-02-04 Thread steve rader
> From: Michael > The Root Raid HOWTO is seriously out of date and is based on the 0.42 > raid tool set. The current .9x tool set is different in it's setup > and configuration. Raid is still alpha but seems to be pretty stable now > with a real nice feature set. I will update the HOWTO, h

Re: root-raid howtos

1999-02-04 Thread Michael
ot to distant future when time permits and raid 1+ is not so alpha. If you have specific questions about booting initrd ramdisk, etc... I will try to answer them or point you to the document with the answers. Michael On Thu, 4 Feb 1999, steve rader wrote: > > Does anyone know of other root-

root-raid howtos

1999-02-04 Thread steve rader
Does anyone know of other root-raid howtos? For example, for those of us who have only a basic understanding of linux booting and ramdisks?! I spent the morning looking at the Root-RAID-HOWTO [1] and have come to the conclusion that doing a root-raid is seriously non-trivial unless you have a