Kickstart, partitioning, differing disk space

[Matt Rose]

If we're gonna be showing our work...

Here's how I partition my drives.  This grabs the driveinfo from the 
python libs, and apportions the drive as

/backup is 15%
/var/log is 5%, with a min of 1G. and a max of 5G.
/boot is 128M

/ is whatever's left.

See Chip's entry for how to detect vmware.  Hyper-V identifies as 
Microsoft Corp as the system-manufacturer.

This will *probably* not work for FC12 and RHEL-6, whenever that comes 
out, as they've entirely re-written the storage layer, but it works for 
redhat 5 based -distros.

drive = isys.hardDriveDict().keys()[0]
dev = parted.PedDevice.get("/dev/%s" % drive)
sizeMB = (float(dev.heads * dev.cylinders * dev.sectors) / (1024 * 1024) 
* dev.sector_size)
sizeMB_i = int(math.floor(sizeMB))
backup_size = int(math.floor(float(sizeMB * .15)))

if int(math.floor(float(sizeMB * .05))) < 1000:
        log_size = 1000
elif int(math.floor(float(sizeMB * .05))) > 5000:
        log_size = 5000
else:
        log_size = int(math.floor(float(sizeMB * .05)))


print "/var/log size is %i " % log_size
print "/backup size is %i " % backup_size
root_size = (sizeMB_i - backup_size - log_size - 128 - 
iutil.swapSuggestion()[1] )
print "/ size is %i " % root_size

Matt

Shabazian, Chip wrote:
> # Default value for disks (27G layout)
> BOOTSIZE=256
> ROOTSIZE=8192
> VARSIZE=8192
> SWAPSIZE=2048
> BANKTOOLSIZE=8192
> GRIDSIZE=0
>
> # check for small disk sizes < default 27G layout:
> if [ ${DISKSIZE} -lt 27648 ]
> then
>         # create small disk (16G layout)
>         ROOTSIZE=5120
>         VARSIZE=5120
>         SWAPSIZE=2048
>         BANKTOOLSIZE=3072
> fi
>
> # force it if it's a VMware system with more than 20G of space
> dmidecode | grep Manufacturer | head -1 | grep -q VMware
> if [ $? = "0" ]
> then
>         # create small disk xen/vmware (16G layout)
>         ROOTSIZE=5120
>         VARSIZE=5120
>         SWAPSIZE=2048
>         BANKTOOLSIZE=3072
> fi
>
>
>
> -----Original Message-----
> From: kickstart-list-bounces at redhat.com
> [mailto:kickstart-list-bounces at redhat.com] On Behalf Of John Oliver
> Sent: Monday, November 09, 2009 11:33 AM
> To: Discussion list about Kickstart
> Subject: Re: Kickstart, partitioning, differing disk space
>
> On Mon, Nov 09, 2009 at 11:04:22AM -0800, Shabazian, Chip wrote:
>   
>> We have three  different partitioning schemes.  The kickstart figures
>> out how big the disk is, then uses one of three different schemes
>>     
> based
>   
>> on the size.  However, if it's a VM, we automatically select the
>> smallest partitioning scheme
>>     
>
> What are these "three schemes"?  How do they know when they're on a VM?
> Could you include a copy of the relevant section of your ks file?
>
> Thanks...
>
> --
> ***********************************************************************
> * John Oliver                             http://www.john-oliver.net/ *
> *                                                                     *
> ***********************************************************************
>
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