[TouchPad General] HP_TOUCHPAD:
WebOS Partitions vs Android after Wipe_All

For users that have WebOS and Android and experience slow read and write performance.

The following information is from a 32GB Tablet with WebOS and Android partitioned using the the Toolbox.

I am providing the information, but I do not know if the difference could have an impact on performance.

On a PC with the novacom drivers, open a terminal and type:

novacom -t open tty://

root@TP:/sbin# lvdisplay

--- Logical volume ---
LV Name /dev/store/root
VG Name store
LV UUID 7hWk82-mm7Z-yviA-Hk19-9ux6-amFQ-6RRpUp
LV Write Access read/write
LV Status available
# open 1
LV Size 568.00 MB
Current LE 71
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 0
Persistent major 254
Persistent minor 0
Block device 254:0

--- Logical volume ---
LV Name /dev/store/var
VG Name store
LV UUID oEVExn-U96n-oC1G-OxsY-zS7t-naKW-F51BHn
LV Write Access read/write
LV Status available
# open 1
LV Size 64.00 MB
Current LE 8
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 0
Persistent major 254
Persistent minor 1
Block device 254:1

--- Logical volume ---
LV Name /dev/store/update
VG Name store
LV UUID ghUp9K-6o4w-o2Cz-QCvu-G2ql-BUR4-lLXAjk
LV Write Access read/write
LV Status available
# open 0
LV Size 16.00 MB
Current LE 2
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 0
Persistent major 254
Persistent minor 2
Block device 254:2

--- Logical volume ---
LV Name /dev/store/log
VG Name store
LV UUID GxC1V1-hBkj-NVoP-gJ8i-sEBD-k3jL-NN699k
LV Write Access read/write
LV Status available
# open 1
LV Size 24.00 MB
Current LE 3
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 0
Persistent major 254
Persistent minor 3
Block device 254:3

--- Logical volume ---
LV Name /dev/store/mojodb
VG Name store
LV UUID G5Uvfe-f8Li-k31k-Hp10-S7ir-ecgU-z1iGIp
LV Write Access read/write
LV Status available
# open 1
LV Size 256.00 MB
Current LE 32
Segments 2
Allocation inherit
Read ahead sectors auto
- currently set to 256
Persistent major 254
Persistent minor 4
Block device 254:4

--- Logical volume ---
LV Name /dev/store/filecache
VG Name store
LV UUID SNM7lp-QRe3-0BDy-WDDG-boMJ-Z65S-mMo4qq
LV Write Access read/write
LV Status available
# open 1
LV Size 136.00 MB
Current LE 17
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Persistent major 254
Persistent minor 5
Block device 254:5

--- Logical volume ---
LV Name /dev/store/media
VG Name store
LV UUID eow1Wx-YTfi-JF1h-2WHP-l1eA-iC2G-vT1dv6
LV Write Access read/write
LV Status available
# open 1
LV Size 19.44 GB
Current LE 2488
Segments 2
Allocation inherit
Read ahead sectors auto
- currently set to 0
Persistent major 254
Persistent minor 6
Block device 254:6

--- Logical volume ---
LV Name /dev/store/swap
VG Name store
LV UUID QcQrtJ-G8kB-icdw-XDYC-jhPA-yMY6-ZH90oz
LV Write Access read/write
LV Status available
# open 1
LV Size 400.00 MB
Current LE 50
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 0
Persistent major 254
Persistent minor 7
Block device 254:7

--- Logical volume ---
LV Name /dev/store/cm-cache
VG Name store
LV UUID r1Zx8Z-kb82-w4Tr-qVHK-WgWo-VSFi-9FL6nh
LV Write Access read/write
LV Status available
# open 0
LV Size 200.00 MB
Current LE 25
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Persistent major 254
Persistent minor 8
Block device 254:8

--- Logical volume ---
LV Name /dev/store/cm-data
VG Name store
LV UUID lgTARl-lQQi-EE3b-M7Y4-cIP8-f80Z-L2z5Xx
LV Write Access read/write
LV Status available
# open 0
LV Size 4.88 GB
Current LE 625
Segments 2
Allocation inherit
Read ahead sectors auto
- currently set to 256
Persistent major 254
Persistent minor 9
Block device 254:9

--- Logical volume ---
LV Name /dev/store/cm-system
VG Name store
LV UUID WtJ27g-v3Id-FttQ-1NAk-RF4U-TbRZ-1Y7ALC
LV Write Access read/write
LV Status available
# open 0
LV Size 1.37 GB
Current LE 175
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Persistent major 254
Persistent minor 10
Block device 254:10

On a 32GB Tablet with Android ONLY after the Automatic_Wipe_All has been flashed.

Using adb shell

/boot/usr/sbin # ./lvm.static lvdisplay

--- Logical volume ---
LV Name /dev/store/cm-system
VG Name store
LV UUID ccfx1f-23fL-3Lf6-hr1v-kT1M-o3dJ-iS5VUs
LV Write Access read/write
LV Status available
# open 0
LV Size 2.20 GiB
Current LE 282
Segments 1
Allocation contiguous
Read ahead sectors auto
- currently set to 4096
Persistent major 254
Persistent minor 0
Block device 253:0

--- Logical volume ---
LV Name /dev/store/cm-cache
VG Name store
LV UUID z9LWcU-gG1i-GnGg-96bm-7rmr-EH2T-Jenyut
LV Write Access read/write
LV Status available
# open 1
LV Size 200.00 MiB
Current LE 25
Segments 1
Allocation contiguous
Read ahead sectors auto
- currently set to 4096
Persistent major 254
Persistent minor 1
Block device 253:1

--- Logical volume ---
LV Name /dev/store/swap
VG Name store
LV UUID 4DeN7v-EiC0-sXzK-AA3y-mdak-oWh2-nzq9n4
LV Write Access read/write
LV Status available
# open 0
LV Size 1.00 GiB
Current LE 128
Segments 1
Allocation contiguous
Read ahead sectors auto
- currently set to 4096
Persistent major 254
Persistent minor 2
Block device 253:2

--- Logical volume ---
LV Name /dev/store/media
VG Name store
LV UUID 1kWzcw-tuQs-uBsE-KJib-ZMqP-TtqO-T3Co5o
LV Write Access read/write
LV Status available
# open 1
LV Size 1.00 GiB
Current LE 128
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 4096
Persistent major 254
Persistent minor 6
Block device 253:6

--- Logical volume ---
LV Name /dev/store/cm-data
VG Name store
LV UUID KLcGlm-wnyw-K3ul-6TPg-LPB2-AVjC-m6UA7N
LV Write Access read/write
LV Status available
# open 1
LV Size 24.69 GiB
Current LE 3160
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 4096
Persistent major 254
Persistent minor 3
Block device 253:3

The Read ahead sectors in WebOS is set to auto, currently set to 256

The Read ahead sectors in Android is set to auto, currently set to 4096

There are more differences, but that is the most important.