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On Freitag 17 Oktober 2008, Wolfgang Liebich wrote: |
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> Hi, |
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> |
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> Alan McKinnon schrieb: |
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> > On Wednesday 15 October 2008 15:13:45 Pintér Tibor wrote: |
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> >>> I'm in the process of setting up a new private computer. I've bought |
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> >>> one with two drives b/c I wanted to setup a RAID system - RAID1 for |
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> >>> important partitions, RAID0 for scratch files maybe. |
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> >>> Additionally I would like to use LVM2 --- on my work PC I've grown to |
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> >>> like the flexibility of that. |
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> >>> The Intel DQ35JO motherboard now supports some kind of mobo based RAID. |
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> >>> Is it better to use this HW raid, or to ignore that and use only the |
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> >>> linux kernel's software RAID. |
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> >> |
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> >> thats not hardware raid, it never was, it never will be. |
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> > |
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> > Rule of thumb: |
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> > |
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> > For any machine you buy to use at home, dump the on-board RAID and use |
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> > Linux software raid instead. |
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> > |
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> > Reason: kernel raid works, that on-board crap doesn't |
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> > Other reason: real hardware raid costs many times more than that entire |
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> > computer you bought for home use |
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> |
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> OK - nearly everyone here (and at work, too) told me to forget the |
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> onboard fake raid controller. So this is what I will do :-) |
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> The RAID-Howto as well as the LVM howto are however woefully out of |
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> date. I will try to work with the linux-raid website's info. |
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the howtos on gentoo-wiki worked well for me. |
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> - Put the root partition on another RAID1 (I thought about putting the |
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> root filesystem into my LVM setup, too -- it is REALLY annoying if the |
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> root partition get's to small), |
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yeah, but if you have 20+ gb root is always big enough ;) AFAIK lvm kills |
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barriers. You use raid for better data security. So using lvm is a bit.. |
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contra productive. |
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> - Build a RAID1 partition for the rest of the system (will be a LVM2 |
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> container) |
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> - Build a last RAID0 partition for scratch data (/tmp, /var/tmp, |
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> /usr/portage, scratch data). |
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I have /tmp and /var/tmp on tmpfs - /tmp is so small it is not worth wasting a |
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partition for it. |
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