Samsung Galaxy S2 Plus (I9105) - Repartitioning with REPIT successful - Android Q&A, Help & Troubleshooting

This post is an information for other users who want to repartition their Samsung Galaxy S2 Plus (i9105 or i9105p).
After reading this post:
[TOOL] Lanchon REPIT: The Data-Sparing Repartitioning Tool For Android
and some modifications to the repit template zip for i9100 provided by Lanchon I have successfully repartitioned my i9105.
Now i have 1 GB system and 5,25 GB data partition size.
Here are the changed parts of the file /env/script which I rezipped into the repit template zip named lanchon-repit-20170115-system=1G-data=max-preload=min+wipe-i9105.zip (now for i9105):
Code:
...
#####################################################
# Lanchon REPIT - Device Handler #
# Copyright 2016, Lanchon #
#####################################################
#####################################################
# Lanchon REPIT is free software licensed under #
# the GNU General Public License (GPL) version 3 #
# and any later version. #
#####################################################
### galaxy-s2-plus
device_makeFlashizeEnv="env/arm.zip"
#device_makeFilenameConfig="system=1G-data=same-sdcard=max-preload=min+wipe"
device_makeFilenameConfig="system=1G-data=max-preload=min+wipe"
device_init() {
device_checkDevice
# the block device on which REPIT will operate (only one device is supported):
# exynos 4210:
#sdev=/sys/devices/platform/dw_mmc/mmc_host/mmc0/mmc0:0001/block/mmcblk0
# omap 4430:
#sdev=/sys/devices/platform/omap/omap_hsmmc.1/mmc_host/mmc0/mmc0:0001/block/mmcblk0
sdev=/sys/block/mmcblk0
spar=$sdev/mmcblk0p
ddev=/dev/block/mmcblk0
dpar=/dev/block/mmcblk0p
sectorSize=512 # in bytes
# a grep pattern matching the partitions that must be unmounted before REPIT can start:
# unmounting the partitions of the selected block device seems to be enough:
#unmountPattern="${dpar}[0-9]\+"
# but we will unmount the external sdcard too (due to some reports that i was so far unable to reproduce):
#unmountPattern="/dev/block/mmcblk\(0\|1\)\(p[0-9]\+\)\?"
unmountPattern="/dev/block/mmcblk[^ ]*"
}
device_initPartitions() {
# the crypto footer size:
local footerSize=$(( 16384 / sectorSize ))
# not all partition types support crypto footers; those that do not will ignore the value passed to initPartition.
# also, not all devices use crypto footers; on those devices, pass a value of zero to initPartition for all partitions.
# the set of partitions that can be modified by REPIT:
# <gpt-number> <gpt-name> <friendly-name> <conf-defaults> <crypto-footer>
#initPartition 7 CACHE cache "same keep ext4" 0
#initPartition 8 MODEM modem "same keep raw" 0
#initPartition 9 FACTORYFS system "same keep ext4" 0
#initPartition 10 DATAFS data "same keep ext4" $footerSize
#initPartition 11 UMS sdcard "same keep vfat" 0
#initPartition 12 HIDDEN preload "same keep ext4" 0
initPartition 19 system system "same keep ext4" 0
initPartition 21 userdata data "same keep ext4" $footerSize
initPartition 20 HIDDEN preload "same keep ext4" 0
# resizing cache is disabled for now since i am not sure that the modem partition can be safely moved simply by updating
# the GPT and not changing the PIT. it is possible that whatever code boots up the modem might read the partition offset
# from the PIT and not the GPT. it is also possible that the device might brick if the modem cannot be brought up.
# the set of modifiable partitions that can be configured by the user (overriding <conf-defaults>):
#configurablePartitions="7 $(seq 9 12)"
#configurablePartitions="$(seq 9 12)"
configurablePartitions="$(seq 19 21)"
# for some partitions it may be unsafe to do anything besides moving them around; those should be left out of this set.
}
device_setup() {
### this is the first function that can access block devices and/or their metadata.
# the number of partitions that the device must have:
#partitionCount=12
partitionCount=21
# the set of defined heaps:
allHeaps="main"
# the partition data move chunk size (must fit in memory):
moveDataChunkSize=$(( 256 * MiB ))
# only call this if you will later use $deviceHeapStart or $deviceHeapEnd:
detectBlockDeviceHeapRange
### the following settings are actually per-heap, but can be defined here instead if their values are constant.
# the size of partitions configured with the 'min' keyword:
#heapMinSize=$(( 8 * MiB ))
# this defaults to 8 MiB, the smallest power-of-2 size that will fit a standard ext4 file system.
# note: this setting only applies to the 'min' keyword; partition sizes all the way down to $heapSizeGranularity
# can still be manually defined even if they are smaller than $heapMinSize.
# the partition alignment:
heapAlignment=$(( 4 * MiB ))
# for best results it is recommended that you use the same alignment chosen by the device OEM.
# you can determine its value by analyzing the stock partitioning, for example with this command:
# > parted /dev/block/whatever -s unit MiB print free
# if in doubt, use 1 or 4 MiB.
# user-configured partition sizes will be rounded (to nearest) to multiples of this value:
#heapSizeGranularity=$heapAlignment
# this defaults to $heapAlignment and should normally not be changed.
}
device_setupHeap_main() {
# each heap is a set of partitions that are physically contiguous in the block device.
# all partition manipulation works exclusively within a heap.
# the set of contiguous partitions that form this heap, in order of ascending partition start address:
#heapPartitions="$(seq 7 12)"
#heapPartitions="$(seq 9 12)"
heapPartitions="$(seq 19 21)"
# the disk area (as a sector range) to use for the heap partitions:
# (the sector range is from heapStart to heapEnd-1 inclusive.)
#heapStart=$deviceHeapStart # the first usable sector of the device
#heapStart=$(parOldEnd 6) # or one past the end of a specific partition
#heapStart=$(parOldEnd 8) # or one past the end of a specific partition
heapStart=$(parOldEnd 18) # or one past the end of a specific partition
#heapStart=344064 # or a fixed sector number
heapEnd=$deviceHeapEnd # one past the last usable sector of the device
#heapEnd=$(parOldStart 13) # or the start of a specific partition
#heapEnd=30769152 # or a fixed sector number
}
#####################################################
# Lanchon REPIT - Device Handler #
# Copyright 2016, Lanchon #
#####################################################
#####################################################
# Lanchon REPIT is free software licensed under #
# the GNU General Public License (GPL) version 3 #
# and any later version. #
#####################################################
### i9100
#
#device_checkDevice() {
#
# checkTool getprop
#
# case ":$(getprop ro.product.device):$(getprop ro.build.product):" in
# *:galaxys2:*) ;;
# *:i9100:*) ;;
# *:GT-I9100:*) ;;
# *:GT-I9100M:*) ;;
# *:GT-I9100P:*) ;;
# *:GT-I9100T:*) ;;
# *:SC-02C:*) ;;
# *)
# fatal "this package is for '$deviceName' devices; this device is '$(getprop ro.product.device)'"
# ;;
# esac
#
#}
### i9105
device_checkDevice() {
checkTool getprop
case ":$(getprop ro.product.device):$(getprop ro.build.product):" in
*:s2ve:*) ;;
*:s2vep:*) ;;
*)
fatal "this package is for '$deviceName' devices; this device is '$(getprop ro.product.device)'"
;;
esac
}
### code after this comment is old and no longer used. it is here for documentation purposes only.
device_detectBlockDeviceSize_i9100() {
# this is unused code from when detectBlockDeviceHeapRange had not yet been implemented.
# it is here for documentation purposes only, ports to other devices should delete this function.
info "detecting eMMC size"
local deviceSize=$(cat $sdev/size)
local heapEnd8GB=15261696
local heapEnd16GB=30769152
local heapEnd32GB=62513152
if [ $(( deviceSize < heapEnd8GB )) -ne 0 ]; then
fatal "eMMC size too small"
elif [ $(( deviceSize < heapEnd16GB )) -ne 0 ]; then
heapEnd=$heapEnd8GB
info "eMMC size is 8 GB"
elif [ $(( deviceSize < heapEnd32GB )) -ne 0 ]; then
heapEnd=$heapEnd16GB
info "eMMC size is 16 GB"
else
heapEnd=$heapEnd32GB
info "eMMC size is 32 GB"
fi
}
device_configureStockLayout_i9100() {
# this is unused code from when the configuration parser had not yet been implemented.
# it is here for documentation purposes only, ports to other devices should delete this function.
# stock partition layout for i9100:
system_size=1
data_size=4
#sdcard_size=11.5078
sdcard_size=max
preload_size=0.5
system_fs=ext4
data_fs=ext4
sdcard_fs=vfat
preload_fs=ext4
}
#####################################################
#deviceName=i9100
deviceName=i9105
main "[email protected]"
Hope this is useful for anyone.

---

you are the first person ever other than me that ported REPIT to a device, congrats!!!
if you want an official port however, you still have to follow the docs and post a repit-dump of your stock phone... which unfortunately you can't do because you already repartitioned...
anyway, thanks so much!!!

---

Lanchon said:
you are the first person ever other than me that ported REPIT to a device, congrats!!!
if you want an official port however, you still have to follow the docs and post a repit-dump of your stock phone... which unfortunately you can't do because you already repartitioned...
anyway, thanks so much!!!
Click to expand...
Click to collapse
Hi, I've got the same device, I'm attaching the LOG here. I've raised an issue in GitHub, but I was unable to attach the file (unspecified error).
I'll monitor Github and this post, if nothing happens I'll implement the code from the OP; looking at the cat proc/partitions the numbers do match. :good:

---

As a sidenote, I think it could be possible to reduce the partition 18 too, 1GB is too much for CSC.
Code:
18 138MB 1212MB 1074MB ext4 CSC
On my s2 (i9100) is already 100MB - what do you think?

---

Hi!
Small update, I correctly resized my CACHE partition down to 100Mb, from 1Gb (!).
Attached to this post is the "script" file you need to replace in the Lanchon Repit zip file, this will work for the Galaxy i9105/p.
Relevant changes are these ones:
Code:
initPartition 18 CSC cache "same keep ext4" 0
initPartition 19 system system "same keep ext4" 0
initPartition 20 HIDDEN preload "same keep ext4" 0
initPartition 21 userdata data "same keep ext4" $footerSize
and
Code:
configurablePartitions="$(seq 18 21)"
..and a couple more just to work on this partitions ordering (just replace entierly the original file with this one attached).
Naturally, rename the Lanchon script to:
Code:
lanchon-repit-20170115-cache=100M+wipe-system=1.1G+wipe-data=max+wipe-preload=min+wipe-i9105.zip
This will give you a system partition of 1.1G, max Data partition and minimal 100Mb Cache. I think it's possible to downsize to 50Mb or less, might do it later. The phone works well, I'm using the RR 5.84 (7.1.2).
FULL credit to Lanchon original Repit and the OP of this post.