Your docs talk about the server partitioning for a single partition architecture
http://www.virtualmin.com/documentation/installation/automated
swap: The swap partition should be at least twice the size of RAM on the system.
/boot: The /boot partition should be large enough to accomodate a few system kernels and initrd images. Your OS vendor probably knows best what size this should be.
/: The remainder of the disk(s) should be devoted to /. This is where all system and user data will go. Multiple Partitions
but on our new machine (CentoOS 6.0 which we will upgrade to 6.2) I don't see any "swap" as such if I log in as root
cd /
I see this: (fyi I'm a unix OS newbie=I don't know what I'm looking for, or how to look for it.)
bin cgroup etc lib lost+found mnt proc sbin srv tmp var boot dev home lib64 media opt root selinux sys usr
i.e it looks like we are up and running with a single partition not even a separate partition for boot or swap.
Do we need to change anything? Should be make a separate Swap partition?
Howdy,
Swap wouldn't show up as a file or directory... you can see the swap by running this command:
free -m
[root@13957-78553 ~]# free -m total used free shared buffers cached Mem: 11902 1043 10859 0 64 606 -/+ buffers/cache: 371 11530 Swap: 14079 0 14079
So, Swap is supposed to be set to twice the RAM...
top - 21:11:23 up 13:20, 1 user, load average: 0.00, 0.00, 0.00 Tasks: 132 total, 1 running, 131 sleeping, 0 stopped, 0 zombie Cpu(s): 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Mem: 12188040k total, 1068028k used, 11120012k free, 66212k buffers Swap: 14417912k total, 0k used, 14417912k free, 621304k cached
so it does not appear to be enough... should we and how do i change that?
Howdy,
Well, setting swap to twice the RAM was a good rule when dealing with systems that had 512MB of RAM, or maybe a gig or two.
But, you have 12GB of RAM there, and I don't think I'd recommend 24GB of swap.
If you used anything near that, your server would probably slow to a crawl do to the disk IO load.
I think that all looks good -- I'd probably leave your swap the way it is :-)
-Eric
I agree with Eric. :-) A server with 12 GB should problably not need any swap space.
Anothet command to view active swap spaces (yes there can be multiple) is
swapon -s
Understood, that's what I thought. OK, then... we are good to go.. time into install Virtual Min on fresh new metal! wish us luck!