Do you allocate all disk space to logical volumes during installation?

mark m.roth2006 at rcn.com
Fri Sep 26 15:13:34 UTC 2008


Kenneth Holter wrote:
> On 9/23/08, mark <m.roth2006 at rcn.com> wrote:
>> Joey Prestia wrote:
>>> Erling Ringen Elvsrud wrote:
>>>> Hello list,
>>>> It is often hard to know how much space is needed for
>>>> different mount points. Increasing the size of a filesystem is commonly
>>>> described as a safer operation than reducing the size. Do you think
>>>> saving space (not absolutely needed) for later is a good idea / common
>> practice?
>>> It is a very good practice to use LVM partitions for any that you
>>> believe may need to grow later down the road. And we never partition the
>>> whole disk. You may never need it. But if you do need that space later
>>> it is invaluable to not have to shut down a machine and add a drive. I
>>> have found It to be very handy to have the foresight to do this and used
>>> it many times to be advantageous.
>> Yup. As I said in my article "Upgrading Linux" in the July '07 SysAdmin
>> (now
>> ceased publication, dammit), I recommend LVM for /usr, /home, and *very*
>> much
>> for /opt (since so much software these days wants to be there). I would
>> *never*
>> use LVM for /boot or /
>>
>> Size: 100M or so for /boot; 4G-8G for /, 20G for /usr, 4G for /var, ditto
>> for
>> /tmp, and lots and lots for /opt and /home.
>>
> What's the reason for not using LVM for / and /boot?

You've got to have the lvm software loaded and running to see and mount it. For
booting, you *really* want KISS engineering - it's complicated enough without
throwing more risk into the mix.

	mark




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