LVM Question
Mark McCulligh
mmcculli at visualtech.ca
Tue Dec 20 18:12:54 UTC 2005
Waldher, Travis R wrote:
>
>
>>-----Original Message-----
>>From: Mark McCulligh [mailto:mmcculli at visualtech.ca]
>>
>>
>>>
>>>
>>Using building Web Servers or Email Servers, for the /home using came
>>grow fast (sometimes make a /www folder). I was just wondering why in
>>Red Hat's manual they would create a LVM Volume Group, then in the
>>Logical Volumes they add a fixed /home directory? Because the /home
>>
>>
>can
>
>
>>grow the most would not it be better to have it under the / Logical
>>Volume for you do not run out of space. Just a little puzzled by Red
>>Hat's Example.
>>
>>
>>
>
>The reason being...
>
>If /home is actually under the / filesystem the users can fill up your
>root filesystem. Which is bad.
>
>/home should be it's own LVM partition
>
>My filesystems are actually:
>
>/dev/cciss/c0d0p1 512M 20M 439M 5% /boot
>/dev/vg00/lvol1 2048M 254M 1.7G 14% /
>/dev/vg00/lvol2 512M 8.1M 463M 2% /home
>/dev/vg00/lvol3 1024M 0 1007M 0% /dev/shm
>/dev/vg00/lvol4 2048M 76M 1.8G 4% /var
>/dev/vg00/lvol6 2048M 33M 1.9G 2% /tmp
>/dev/vg00/lvol7 7168M 1.9G 4.8G 29% /usr
>
>This keeps my root filesystem safe.
>
>Also, it's not *easy* to extend your root filesystem, unless that
>ext2online feature is now working again/properly. Even then, I can't
>remember if you could actually extend the root filesystem.
>
>But you could extend /var, /home, /usr, /tmp, etc. with much adoo.
>
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>
Thanks, I think I now understand why you would define Logical Volumes
inside of your Volume Group. I never thought of it that way.
Mark.
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