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tcostigl
Tux's lil' helper
Tux's lil' helper


Joined: 28 Jul 2004
Posts: 97

PostPosted: Sat May 14, 2005 9:23 pm    Post subject: Software Raid Install Reply with quote

I was looking through the raid install howto using mdadm. My question is why can't I just make md0 the whole disk and partition md0 after the array is started?
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thedrez
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Joined: 10 May 2005
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PostPosted: Sun May 15, 2005 8:13 am    Post subject: Reply with quote

because md0 is a partition made from partitions on two individual disks...

you can't partition a partition...

hope that helps
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markkuk
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Joined: 29 Nov 2002
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PostPosted: Sun May 15, 2005 10:12 am    Post subject: Reply with quote

thedrez wrote:

you can't partition a partition...
Actually you can, if you make md0 into a LVM volume. Then you can create multiple logical volumes inside it. However, you can't boot from LVM, so at least /boot must be on a separate non-LVM partition.
http://gentoo-wiki.com/HOWTO_Gentoo_Install_on_Software_RAID_mirror_and_LVM2_on_top_of_RAID
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thedrez
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PostPosted: Sun May 15, 2005 10:46 am    Post subject: Reply with quote

I stand corrected...

Should also mention that it's a more complicated setup... Additionally, I don't think you can't create just one software raid partition occupying the whole drive and create an lvm physical volume from it and expect to boot from it... But hey, I was wrong before :-)

If you can, please share info...
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