[SGVLUG] Linux Partitioning for Server

[Edgar Garrobo]

I think that another part of this that I'm asking for bits of wisdom on is
the specifying of mounts or directories like /usr, /var, /opt, etc...  Also,
anyone have experience with logical volumes over partitions.  I realize I
could just google this information and I have before, but I put more value
on the experience and opinions of the people in our LUG.

On Mon, Apr 6, 2009 at 2:55 PM, Edgar Garrobo <egarrobo at gmail.com> wrote:

> I can understand the benefit of putting the SWAP file on a seperate drive
> or array, but it seems like such a waste to give up a 320GB drive or two of
> them in the RAID1/mirrored for OS/root and SWAP.  Between the / and SWAP I
> only need about 30GB max.  That leaves 290GB (or 610GB with 2 drives) of
> space wasted.  The server can only physically support 4 drives because it's
> only got 4 drive bays and using an external array or fibre channel is out of
> the question for this server.
>
> On Mon, Apr 6, 2009 at 2:40 PM, matti <mathew_2000 at yahoo.com> wrote:
>
>>
>>
>> Hi,
>>
>> Yes, try to avoid using the RAID 5 for the root/OS,
>> ideally, and I know this isn't possible often
>> enough, I would have the root partition as
>> a RAID 1
>>
>> I also like Matt's recommendation of
>> then breaking the RAID 1 and using
>> the off lined mirrored drive as
>> a hot spare/backup.
>>
>> likewise, the SWAP area SHOULD NOT be
>> in the RAID 5... this you will find will
>> end up killing performance once things
>> hit swap. IF you are forced to do it,
>> then make certain you have LOTs of RAM,
>> and carefully monitor the system because
>> once it starts to use the swap space
>> you will be in trouble (performance wise)
>>
>> I would try to do this with the phyiscal
>> drives:
>>
>> [ drive 1 ][drive 2] = RAID 1/mirrored for OS/root
>>
>> [ drive 3 ] = swap
>>
>> [ drive 4 ][ drive 5 ][ drive 6 ] = RAID 5/data
>>
>> this setup should result in the best performance
>> typically...
>>
>> hmmm... I guess people typically don't use an
>> entire drive for swap anymore.. so I would put
>> that part on the RAID 1 drives and max the RAM
>> on the system. (and hopefully it would hardly ever
>> use swap.. )
>>
>> best
>> matti
>>
>>
>> > I usually create a RAID1 for my
>> > boot partition, then take one of
>> > the drives offline.  That way you can bring it back
>> > online to sync after
>> > an OS update and have a ‘hot spare’ laying
>> > around if the server OS
>> > gets compromised or corrupted.
>>
>>
>>
>>
>>
>
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