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> Beso wrote: |
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>> second, i'd like to know if there's a need for a raid enabled |
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>> motherboard and more than one disk to go on lvm. i only have a 100gb |
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>> disk that i'd like to convert to lvm with no raid. |
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I recommend using software RAID unless you go all the way and get one of |
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those really fancy (expensive) RAID cards. Honestly, software RAID has |
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some advantages over even the expensive setups, although a few |
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disadvantages as well. I definitely wouldn't use the RAID built-into a |
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motherboard - it is effectively software RAID anyway and you're tossing |
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the flexibility of linux software RAID. |
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And LVM works fine without RAID - I've used it that way without issue at |
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all. Of course, you have no protection so if you have a partition split |
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across two disks without RAID you lose data no matter which drive fails. |
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LVM is all about taking one pool of block devices and chopping it up |
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into a different pool of block devices - that's all. You could run LVM2 |
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on a floppy disk, on a USB drive, or whatever. You could use LVM2 to |
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combine a floopy disk, an mp3-player, and a USB flash drive into a |
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single storage pool and then split it into a whole bunch of read-only |
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partitions. It really has nothing to do with RAID other than the fact |
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that a RAID gives you one really big block device that is inconvenient |
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to use on its own. |
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One thing I haven't done is run boot/root on LVM2 - you might want to |
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look into that. It might work with a initrd - I never bothered with |
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those so I keep it simple. Besides, I keep little to nothing on my 1GB |
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root partition so it never fills up (root only contains /bin, /sbin, |
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/root, /lib, and /etc). |
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>> and last, does it make sense doing a passage to lvm? i currently run |
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>> into some problems with my root partition that gets filled and that i |
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>> always have to watch the free space on it, so if i don't pass to raid |
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>> i'll try to duplicate the partition on a greater one. |
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I'd recommend lvm for anybody doing anything at all. It gives you a |
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whole lot more flexibility with your disk space. If all your data is on |
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lvm and you want to add a raid later, or just add some new non-raid |
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drives, moving your data around becomes trivial (even with the system |
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running in full production). Growing and shrinking partitions is |
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trivial as long as your filesystem supports it (I tend to use ext3 for |
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this reason - I don't think anything else supports both growing and |
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shrinking). |
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>> i was forgetting: i'd like to use it on amd64. is there any problem? i |
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>> have seen around some problems with lvm and amd64 some of them marked |
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>> as solved, so i'd like to know if there could be problems with this arch. |
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>> thanks for your help. |
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Maybe in the early dawns of time there were problems with lvm and amd64, |
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but I haven't experienced them. |
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