[TriLUG] Running swap as an LVM drive

[Magnus]

On Friday, August 29, 2003, at 11:37  AM, Jon Carnes wrote:

>> Other more heavily used filesystems like /usr or /home are in LVM and 
>> I have
>> no complaints on them.
>
> Are you using it on /var on a mailsystem?

This is a development workstation that I used for packaging RPM's.  So 
while it is disk intensive, it does so in different ways than a mail 
server.

I haven't seen any benchmarks on LVM vs. non-LVM disk performance.  All 
I can say is that the seat-of-the-pantsometer tells me that this system 
performs largely the same as it did before it was running LVM. But my 
partitions are laid out much more smartly as I can fine tune the 
partition sizes as needed.

Speaking of mail servers, wouldn't it be nice to be able to stop your 
mail daemons, create a filesystem snapshot, restart your daemons and 
then back up from the snapshot?  Yes, you would have about 3 seconds of 
mail service downtime per day but your backups would be good.  For some 
organizations that 3 seconds of downtime is unacceptable but from what 
I've seen of some of the big broadband ISP's they wouldn't notice such 
a small window of downtime.

--

C. Magnus Hedemark
http://trilug.org/~chrish
"The only way to keep your health is to eat what you don't want, drink 
what you don't like, and do what you'd rather not." - Mark Twain
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