Linux Mint 11 "Katya" on VAIO P - VPCP115KG Part 5 (Experimental)

Aligning Filesystems
As the erase block size has been identified, in order to align with it, the previous partitions / volumes configuration are reconfigured.


Proposed Disk Layout

Partition / Volume	Size	Remark
/dev/vg00/lv00	9216MB	/ partition in LV (576 LE)
/dev/sda1	256MB	/boot partition
/dev/vg00/lv01	1024MB	swap partition (64 LE)
/dev/vg00/ev00	16GB	encrypted 16GB partition in LV (1000 LE)
/dev/vg00/lv02	32224MB	/data partition in LV (3072 LE)
free space	144 LE	free space for snapshot

Factory CHS & Partition Table
I don't bother with the default CHS, instead I create a /boot partition after the first 16MB erase block, both the size of sda1 & sda2 are divisible by 16.

# sfdisk -luM /dev/sda

 
Disk /dev/sda: 7783 cylinders, 255 heads, 63 sectors/track
Units = mebibytes of 1048576 bytes, blocks of 1024 bytes, counting from 0

   Device Boot Start   End    MiB    #blocks   Id  System
/dev/sda1   *    16    271    256     262144   83  Linux
/dev/sda2       272  61055  60784   62242816   8e  Linux LVM
/dev/sda3         0      -      0          0    0  Empty
/dev/sda4         0      -      0          0    0  Empty
# sfdisk -luS /dev/sda
Disk /dev/sda: 7783 cylinders, 255 heads, 63 sectors/track
Units = sectors of 512 bytes, counting from 0

   Device Boot    Start       End   #sectors  Id  System
/dev/sda1   *     32768    557055     524288  83  Linux
/dev/sda2        557056 125042687  124485632  8e  Linux LVM
/dev/sda3             0         -          0   0  Empty
/dev/sda4             0         -          0   0  Empty


Partitioning
Create a LVM physical volume:
# lvm pvcreate --dataalignment 16384k /dev/sda2
Confirm if the PV is properly aligned:
# pvs -o +pe_start
  PV         VG   Fmt  Attr PSize  PFree 1st PE
  /dev/sda2  vg00 lvm2 a-   59.34g 2.25g  16.00m 
Create a LVM volume group:
# lvm vgcreate -s 16 vg00 /dev/sda2
Confirm the PE size of the logical volume:
# lvm vgdisplay /dev/vg00 | grep 'PE Size'
  PE Size               16.00 MiB 
Create a / volume (576 LE x 16):
# lvm lvcreate -n lv00 -L 9216 /dev/vg00
Create a swap volume (64 LE x 16):
# lvm lvcreate -n lv01 -L 1024 /dev/vg00
Create a volume for LUKS (1000 LE x 16):
# lvm lvcreate -n ev00 -L 16000 vg00
Create a volume for /data (2014 LE):
# lvm lvcreate -n lv02 -l 2014 /dev/vg00

Create an ext4 /boot partition:
# mkfs.ext4 -E stripe-width=16384 -b 1024 /dev/sda1
Create an ext4 / volume:
# mkfs.ext4 -E stripe-width=4096 -b 4096 /dev/vg00/lv00
Activate swap partition:
# mkswap /dev/vg00/lv01
Create an ext4 LUKS volume (refer to Part 1 on how to create it):
# mkfs.ext4 -E stripe-width=4096 -b 4096 /dev/mapper/ev00
Create an ext4 /data volume:
# mkfs.ext4 -E stripe-width=4096 -b 4096 /dev/vg00/lv02


Restore
Refer to Part 2 on how to restore the data as well as the boot loader, when necessary.


I/O Scheduler
Edit /etc/rc.local and add the lines highlighted in blue below:
#!/bin/sh -e
#
# rc.local
#
# This script is executed at the end of each multiuser runlevel.
# Make sure that the script will "exit 0" on success or any other
# value on error.
#
# In order to enable or disable this script just change the execution
# bits.
#
# By default this script does nothing.

echo deadline > /sys/block/sda/queue/scheduler
echo 1 > /sys/block/sda/queue/iosched/fifo_batch

exit 0




Everything should be aligned to 16MB erase block, hopefully.