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On 08/28/2010 10:42 PM, Dale wrote: |
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> Alex Schuster wrote: |
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>> Dale writes: |
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>> |
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>>> It would be nice if something like *fdisk could edit the labels tho. |
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>>> It would be so much easier. I didn't see anything in the man pages |
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>>> tho. |
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>> I'd like this, too. cfdisk displays them, but is not abel to edit. |
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>> |
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>>> I looked into LVM a good while ago. It's just to much for me to keep |
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>>> up with since I just have a desktop system here. It has its good |
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>>> points but just way overkill for what I have here. |
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>> It's not that complicated. In a nutshell: |
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>> |
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>> Choose the partitions you want to use for LVM, and prepare them to be |
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>> physical volumes: |
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>> pvcreate /dev/sda[678] |
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>> |
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>> Create a volume group out of these partitions: |
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>> vgcreate myvg /dev/sda[678] |
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>> |
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>> Create logical volumes in this volume group: |
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>> lvcreate -L 5G -n lvm1 myvg |
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>> lvcreate -L 2G -n lvm2 myvg |
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>> |
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>> Use these logical volumes just as disk partitions: |
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>> |
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>> mke2fs -j -L fs_on_lvm /dev/myvg/lvm1 |
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>> mount /dev/myg/lvm1 /mnt/fs_on_lvm |
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>> |
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>> The file system is too small? Just extend its size by 1G, without |
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>> unmouning: |
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>> |
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>> lvresize -L +1G /dev/myvg/lvm1 |
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>> |
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>> The volume groups is getting full, no space to add LVMs? Add other |
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>> partitions. If you like, even from a 2nd drive: |
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>> |
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>> pvcreate /dev/sdb5 |
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>> vgextend myvg /dev/sdb5 |
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>> |
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>> So, it's of course more complicated than just firing up cfdisk, create |
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>> partitions and file systems on them, but you have much more flexibility. |
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>> Once you have LVM, you do not have to care what the actual device |
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>> names of |
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>> your drives are. If sda becomes sdb and vice versa, no problem, and |
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>> nothing to worry about. LVM does not use the device name, it scans each |
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>> partition and uses the LVM UUIDs on them to identify what is what. |
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>> |
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>> Wonko |
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>> |
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> |
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> Since I finally got this thing settled with partition sizes, that's |
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> pretty complicated. I have root, /boot, /home, portage and a data |
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> partition for misc. junk. I doubt it will change any in the near future. |
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> |
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> I did read up on it one time a while back. It's neat when you have to |
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> add drives and resize things but still a bit much for a little desktop. |
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|
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I'd stay away from LVM. I started using it on a Debian Lenny machine |
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and performance went down the drain. For example, deleting a 3GB file |
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was almost instant and now it takes like 15 seconds. It's almost as if |
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with LVM, deleting a file means writing 0 all over the 3GB first :-/ |
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