[Android Head-Units] pdanders11:
Sorry guys. I've been busy with other things and haven't spent much time on this.

I wanted to throw out another idea on the lock. Whoever is locking the partition has to be as active app monitoring the directory.

ps shows

USER PID PPID VSIZE RSS WCHAN PC NAME
root 1 0 412 272 c00d47a4 00008658 S /init
root 2 0 0 0 c006c788 00000000 S kthreadd
root 3 2 0 0 c0059610 00000000 S ksoftirqd/0
root 5 2 0 0 c0069188 00000000 S kworker/u:0
root 6 2 0 0 c0067c20 00000000 S khelper
root 7 2 0 0 c0069188 00000000 S kworker/u:1
root 12 2 0 0 c0067c20 00000000 S suspend
root 315 2 0 0 c00abae4 00000000 S sync_supers
root 317 2 0 0 c00ac764 00000000 S bdi-default
root 319 2 0 0 c0067c20 00000000 S kblockd
root 342 2 0 0 c0242100 00000000 S khubd
root 373 2 0 0 c0067c20 00000000 S cfg80211
root 374 2 0 0 c0069188 00000000 S kworker/0:1
root 472 2 0 0 c0092b28 00000000 S khungtaskd
root 473 2 0 0 c00a6658 00000000 S kswapd0
root 475 2 0 0 c00f4a88 00000000 S fsnotify_mark
root 477 2 0 0 c0067c20 00000000 S crypto
root 519 2 0 0 c0067c20 00000000 S tcc_clockctrl_w
root 526 2 0 0 c0067c20 00000000 S mali-pmm-wq
root 584 2 0 0 c0067c20 00000000 S DWC Notificatio
root 585 2 0 0 c0067c20 00000000 S dwc_otg
root 588 2 0 0 c005f3b4 00000000 S tcc-usb-thread
root 600 2 0 0 c0067c20 00000000 S f_mtp
root 605 2 0 0 c0274d58 00000000 S file-storage
root 609 2 0 0 c0067c20 00000000 S rohm_wq
root 614 2 0 0 c0067c20 00000000 S event_wq
root 623 2 0 0 c00936d4 00000000 S irq/43-tcc-rtc
root 637 2 0 0 c006c700 00000000 D kinteractiveup
root 640 2 0 0 c0069188 00000000 S kworker/u:2
root 650 2 0 0 c0067c20 00000000 S binder
root 678 2 0 0 c040b8d4 00000000 S krfcommd
root 696 1 316 168 c00d47a4 00008658 S /sbin/ueventd
root 729 2 0 0 c02d4700 00000000 S mmcqd/1
root 961 2 0 0 bf007c50 00000000 S ndda
root 983 2 0 0 c014c818 00000000 S jbd2/ndda2-8
root 984 2 0 0 c0067c20 00000000 S ext4-dio-unwrit
root 988 2 0 0 c0067c20 00000000 S ext4-dio-unwrit
root 992 2 0 0 c0067c20 00000000 S ext4-dio-unwrit
root 996 2 0 0 c0067c20 00000000 S ext4-dio-unwrit
root 1000 2 0 0 c0067c20 00000000 S ext4-dio-unwrit
system 1003 1 832 260 c02e5160 400856e0 S /system/bin/servicemanager
root 1004 1 6724 1428 ffffffff 40054ce4 S /system/bin/vold
root 1005 1 2800 624 ffffffff 40058ce4 S /system/bin/quickboot
root 1007 1 7460 1056 ffffffff 40116ce4 S /system/bin/netd
root 1008 1 696 272 c031361c 400a7fe8 S /system/bin/debuggerd
root 1009 1 1372 608 c005fccc 400b5ce4 S /system/bin/rild
system 1010 1 69968 5280 ffffffff 400f06e0 S /system/bin/surfaceflinger
root 1011 1 598316 39124 ffffffff 400b3804 S zygote
drm 1012 1 12432 3920 ffffffff 401056e0 S /system/bin/drmserver
media 1013 1 34616 6788 ffffffff 401066e0 S /system/bin/mediaserver
bluetooth 1014 1 1336 588 c00d47a4 40037488 S /system/bin/dbus-daemon
root 1015 1 844 332 c03ada38 4009b4a8 S /system/bin/installd
keystore 1017 1 1736 544 c031361c 400edfe8 S /system/bin/keystore
system 1038 1 2972 296 ffffffff 40031668 S /system/bin/syscomd
system 1039 1 2972 292 ffffffff 40122668 S /system/bin/panelcomd
root 1110 2 0 0 c00715d8 00000000 S ucomif-thread
root 1114 2 0 0 c00715d8 00000000 S ucomif-thread
root 1161 2 0 0 c00e47e4 00000000 S flush-240:0
system 1165 1011 685336 50660 ffffffff 400b36e0 S system_server
root 1306 2 0 0 c014c818 00000000 S jbd2/ndda5-8
root 1307 2 0 0 c0067c20 00000000 S ext4-dio-unwrit
root 1308 2 0 0 c014c818 00000000 S jbd2/ndda3-8
root 1309 2 0 0 c0067c20 00000000 S ext4-dio-unwrit
root 1310 2 0 0 c014c818 00000000 S jbd2/ndda12-8
root 1311 2 0 0 c0067c20 00000000 S ext4-dio-unwrit
root 1312 2 0 0 c014c818 00000000 S jbd2/ndda13-8
root 1313 2 0 0 c0067c20 00000000 S ext4-dio-unwrit
system 1327 1011 623380 39804 ffffffff 400b4410 S com.android.systemui
app_15 1340 1011 728160 112148 ffffffff 400b4410 S com.jvckenwood.kwlauncher
system 1355 1011 609200 31456 ffffffff 400b4410 S com.jvckenwood.kwsystemservice
kenwood 1378 1011 830372 89036 ffffffff 400b4410 S jp.co.kenwood.multimediaplayer
app_26 1392 1011 630432 31564 ffffffff 400b4410 S com.jvckenwood.kwaccountservice:remote
system 1404 1011 610324 31676 ffffffff 400b4410 S com.jvckenwood.kwsystemservice:remote
app_25 1422 1011 613656 35240 ffffffff 400b4410 S jp.co.kenwood.kwdriveclientservice:remote
app_9 1442 1011 608352 32760 ffffffff 400b4410 S android.process.media
app_27 1504 1011 611880 36880 ffffffff 400b4410 S com.android.inputmethod.latin
radio 1520 1011 613668 33720 ffffffff 400b4410 S com.android.phone
root 1542 2 0 0 bf1b85c0 00000000 S kvmgr_operd
app_0 1623 1011 626780 38600 ffffffff 400b4410 S android.process.acore
wifi 1691 1 2508 1300 c00d47a4 4000e804 S /system/bin/wpa_supplicant
app_42 1696 1011 688012 38544 ffffffff 400b4410 S jp.co.kenwood.dlna.service
root 1712 2 0 0 c00715d8 00000000 S RTKTHREAD
app_14 1714 1011 607672 32132 ffffffff 400b4410 S com.jvckenwood.aupeo
garmin 1730 1011 807340 60704 ffffffff 400b4410 S jp.co.kenwood.navigation
app_6 1759 1011 617716 32420 ffffffff 400b4410 S com.android.providers.calendar
dhcp 1790 1 920 444 c00d47a4 4007b488 S /system/bin/dhcpcd
app_20 1855 1011 610124 32020 ffffffff 400b4410 S com.jvckenwood.kwsns
app_23 1875 1011 608344 31012 ffffffff 400b4410 S com.jvckenwood.kwweather
app_23 1889 1011 607244 30452 ffffffff 400b4410 S com.jvckenwood.kwweather:kwweather_service
app_25 1901 1011 608368 31500 ffffffff 400b4410 S jp.co.kenwood.kwdriveclientservice
app_45 1970 1011 606744 30100 ffffffff 400b4410 S br.com.bott.droidsshd
app_44 1985 1011 616612 35604 ffffffff 400b4410 S eu.chainfire.supersu
app_5 2000 1011 611832 31632 ffffffff 400b4410 S com.android.calendar
app_8 2205 1011 606692 30268 ffffffff 400b4410 S com.android.defcontainer
app_12 2220 1011 607680 31240 ffffffff 400b4410 S com.android.gallery3d
app_33 2234 1011 606740 29944 ffffffff 400b4410 S com.android.musicfx
app_38 2248 1011 608176 30696 ffffffff 400b4410 S com.android.quicksearchbox
app_18 2298 1011 607484 30944 ffffffff 400b4410 S com.jvckenwood.kwrss
app_48 2337 1011 624064 39864 ffffffff 400b4410 S com.ramdroid.appquarantine
app_49 2394 1011 636620 46048 ffffffff 400b4410 S com.thinkyeah.apphider
root 2472 2 0 0 c0069188 00000000 S kworker/u:4
root 2491 2 0 0 c0069188 00000000 S kworker/0:0
app_50 2715 1011 640148 41448 ffffffff 400b4410 S com.keramidas.TitaniumBackup
root 2901 1 4468 212 ffffffff 0000825c S /sbin/adbd
root 2909 2 0 0 c0069188 00000000 S kworker/0:2
root 2910 2901 760 364 c00365d4 40098ec4 S /system/bin/sh
root 2912 2910 960 352 00000000 401094a8 R ps

Are there apps in running that look suspicious/capable of doing this lock? Obviously anything from Kenwood has to be suspect. But anything else? Just trying to figure out what each process does, this app seems a possible suspect

root 475 2 0 0 c00f4a88 00000000 S fsnotify_mark

From what I read fsnotify is linux filesystem monitoring tool.

https://docs.google.com/document/d/...fOMMRKpih3hPJmvoU/edit#heading=h.7ush6jpv61gf

from the processes I looked at, it looks like one that could be flagging the directory/partition change. Thoughts? I think I tried to "kill" it but it respawned but need to double check.