How to install FreeBSD 8 with raid 1, 5 and 10 at a time in 10 separate disks

J

jfme

How to install FreeBSD 8 with raid 1, 5 and 10 at a time in 10 separate disks:

Hi guys

My problem is I have to install FreeBSD 8.0 to work with raids in a way a bit complex in my 10 disks (I am using Virtual Box to verify if they work):

-> Disk a and b: / boot with Raid 1
I think we could also put the / swap

-> Disk c (8GB), d (8GB), and (8GB) and f (8GB) / with Raid 5

-> Disk g (8GB), h (8GB), i (8GB), j (8GB): / home with Raid 10

I've been reading a lot in forums and pages but I have not found a way to get it. Any ideas?

Sorry for the translation (I do not speak English) and thank you very much in advance
 
killasmurf86 said:
Did you consider using zfs and any of raidz or raidz2?
Click to expand...

No, I use raid 1 for / boot, raid 5 for / and raid 1 +0 for / home.

Zfs could use instead of raid 5 but not really what I want ...
 
Well, if you have a RAID card, you configure the RAID using the RAID card, then the RAID card handles everything. So you use the RAID software an make your three RAID arrays. FreeBSD will only see 3 disks, one for each of your RAID arrays.
 
OK thanks, but I haven't a RAID card. I'm trying to install from VirtualBox by software.

I created the ten discs in VirtualBox and i joined them in one Virtual Machine. But unlike Debian or CentOS, which has a option to install with RAIDS, FreeBSD not, because he doesn't assume it. I see the option to partition the drive but not to assign it as RAID.

I need join the disks in RAIDS then FreeBSD will only see three disks, one for each RAID array and i will can install it

Any ideas?
 
jfme said:
How to install FreeBSD 8 with raid 1, 5 and 10 at a time in 10 separate disks:

My problem is I have to install FreeBSD 8.0 to work with raids in a way a bit complex in my 10 disks (I am using Virtual Box to verify if they work):

-> Disk a and b: / boot with Raid 1
I think we could also put the / swap
Click to expand...

Why a separate /boot partition? I understand the reasons for this on Linux, as GRUB can't directly boot off some filesystems, but what's the point on FreeBSD? Just use a single / filesystem with /boot as just a directory on there. Partition each of 2 disks into two slices: s1 for the / filesystem and s2 for swap. Then use gmirror to create the RAID1 mirror across the two s1 slices.

-> Disk c (8GB), d (8GB), and (8GB) and f (8GB) / with Raid 5
Click to expand...
Does it absolutely have to be RAID5? If so, there's an experimental geom_raid5 class available as a patch that enables graid5 support. Otherwise, use ZFS and raidz.

-> Disk g (8GB), h (8GB), i (8GB), j (8GB): / home with Raid 10
Click to expand...
Why separate this out into a separate RAID10? Just use ZFS with multiple raidz vdevs, or even multiple mirror vdevs if you want the most speed.
 
jfme said:
OK thanks, but I haven't a RAID card. I'm trying to install from VirtualBox by software.

I created the ten discs in VirtualBox and i joined them in one Virtual Machine. But unlike Debian or CentOS, which has a option to install with RAIDS, FreeBSD not, because he doesn't assume it. I see the option to partition the drive but not to assign it as RAID.

I need join the disks in RAIDS then FreeBSD will only see three disks, one for each RAID array and i will can install it

Any ideas?
Click to expand...

The default installer, sysinstall, does not support any of the fancy GEOM classes (gstripe, gmirror, graid3, graid5, etc) nor does it support ZFS. You have to do a manual install, or do a bunch of manual work after the install, to get things working with software RAID.

There's a couple threads in the How-To forum that cover the ZFS side of things. And the gmirror side is covered in the Handbook, I believe.
 
You must log in or register to reply here.
Back
Top