[lug] Swap space, /boot and RAID and LVM

[Elyse M. Grasso]

On Tuesday 23 October 2007, Hugh Brown wrote:
> Elyse M. Grasso wrote:
> > My big server is now up and running, (and being loaded with a bunch of 
stuff 
> > 
> > I have 4 physical hard drives, two dual core Opterons, 4 gigs of ram in 
two 
> > dual channel banks.
> > 
> > Pointers to current, reliable docs would be appreciated.
> > 
> > /boot is not LVM-able but I have seen some references to RAIDing it
> > 

> > I also noticed that the swap created by anaconda is only (!) 1.94 Gigs. I 
know 
> > at one time it was recommended that swap space should equal physical 
memory. 
> > Is that no longer recommended with very large memories? (I haven't had 
time 
> > to read the latest installment of the memory series on LWN yet today). 
> > 
> > Opinions: should I increase the swap while I am thrashing the disk 
> > partitioning? 
> 
> We've got a smaller server at work that has /boot on /dev/md0 and LVM on 
>   /dev/md2 and it's been running that way for a year or more.  It's a 
> box running vmware.  We found that the disk speed has been a major 
> bottleneck for vmware on that system.
> 
> This is what I found a few months ago when trying to understand recent 
> swap recommendations: 
> 
http://www.redhat.com/docs/manuals/enterprise/RHEL-5-manual/Deployment_Guide-en-US/ch-swapspace.html
> 
> Hugh

Thanks.

Looks like the Fedora install was a little stingy with swap space, as I 
suspected. I'll fix that when I reconfigure the drives.


-- 
Elyse Grasso

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