partitioning scheme

[Steve Phillips]

Mad Unix wrote:
> What you think about this?
> 
> /boot ---> local disk

Questionable - see below, but hey - people seem to love partitioning things.

> /       ---->  localdisk
> swap ------> localdisk
> 
> /tmp  ----->  SAN

I'd keep that local, you have enough space - either mount it as a tmpfs 
system (ala solaris) or just make it part of the root FS, optimally, if 
you are going for security, make it a seperate partition (tmpfs or local 
disk) and mount it with the nonexec flags set as well.

(note: tmpfs is basically a ramdisk like filesystem that is virtual and 
gets wipes at reboot)

http://en.wikipedia.org/wiki/TMPFS

> /usr  ------> SAN

this is a _really bad_ idea.

A lot of the time, you can get yourself in trouble if you are not 
exceptionally careful about what is called at boot, and these days a lot 
of stuff sits off /usr and you could accidentally isolate something that 
needs to be run to allow - say, the SAN to come online.

Back in the day, people used to partition stuff lots simply because 
there was no such thing as a large hard drive (ok, this is not 100% 
correct, but pretty close) - a lot of people claimed it was for data 
retention incase of a system/drive crash, but seriously, how many people 
that claim this do you know that have HAD a headcrash on a drive and 
then tried to reconstruct data from the other segments of the drive - 
generally when a drive crashes it will take out pretty much all the of 
device rendering it ALL unusable. (and again, yes, at times you DO try 
to reconstruct the data but it is NOT a common event and you can cause 
more problems than you solve with this file system fragmentation that 
everyone seems dead keen on)

Your best protection is NOT more partitions it is things like RAID (i'd 
mirror those two local disks) and good backups with a _tested_ restore 
process.


> /home -----> SAN

This seems ok

> /opt -----> SAN

Yup

> /var -------> SAN

I'd tend to keep this local as well - in particular, as the logs and 
stuff tend to go there as well as other ancillary things (/var/run and 
/var/tmp) that are used to bring the system up, it means that in event 
of SAN failure you can still actually boot the system and have it semi 
workable.

> /u01 -----> SAN

Yup.

-- 
Steve
()  ascii ribbon campaign - against html e-mail
/\  www.asciiribbon.org   - against proprietary attachments