I am in the process of setting up what is supposed to be a RAID-1, but it will contain several sub RAID-0s. The basic idea is to have a mirror in place, but to also stripe specific partitions of my disk. I was told that this is not a good idea b/c if one partition goes down then I will not be able to boot my system. Does anyone know 1) if this is true, 2) is there a benefit to doing this using metadevices, or 3) should I just go ahead and set this up as a RAID-1 and call it a day?
I should probably add that this is a SW RAID setup.
Thx in advanced for any input or feedback.
Using RAID-0 stripes for use with a RAID-1
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Using RAID-0 stripes for use with a RAID-1
Although you can't boot off a software raid device, you can boot off of a partition
that is part of a raid1 device.
You need to load grub on both drives so that if hda fails, it can be physically swapped
with its raid1 partner.
that is part of a raid1 device.
You need to load grub on both drives so that if hda fails, it can be physically swapped
with its raid1 partner.
Re: Using RAID-0 stripes for use with a RAID-1
Thats what we call a Raid 10 :)
http://en.wikipedia.org/wiki/Nested_RAID_levels
http://en.wikipedia.org/wiki/Nested_RAID_levels
Re: Using RAID-0 stripes for use with a RAID-1
^ LOL. I still don't quite understand the concept, but I was able to set it up. It's a meta RAID-1 set up with a sub meta RAID-0. But thanks for the feedback!
I got the boot problem taken care of as well. I had to create the nvalias backup_root a which will allow me to boot from either disk should one fail.
I got the boot problem taken care of as well. I had to create the nvalias backup_root a which will allow me to boot from either disk should one fail.