[Sony Ericsson Xperia Mini, Mini Pro, Xperia Pro, A] havocgb:
As the button to remount partition from ro to rw is disabled, I can't actually try mounting. So I tried pasting a file from my sdcard ('deskclockgoogle.apk') in /system. The logcat for the operation is pasted below.

build.board: mogami

build.bootloader: unknown

build.brand: SEMC

build.cpu_abi: armeabi-v7a

build.cpu_abi2: armeabi

build.device: coconut

build.display: cm_coconut-userdebug 4.1.2 JZO54K eng.root.20121222.002343 test-keys

build.fingerprint: SEMC/WT19i_1254-2184/WT19i:4.0.4/4.1.B.0.431/UL5_3w:user/release-keys

build.hardware: semc

build.host: ubuntu

build.id: JZO54K

build.manufacturer: SEMC

build.model: Xperia Live with Walkman

build.product: WT19i

build.radio: unknown

build.serial: unknown

build.tags: test-keys

build.time: 1356128638000

build.type: userdebug

build.user: root

version.codename: REL

version.incremental: eng.root.20121222.002343

version.release: 4.1.2

version.sdk_int: 16

12-28 15:31:09.985 D/su (6013): Found file /data/data/com.noshufou.android.su/files/stored/10098-0

12-28 15:31:09.985 D/su (6013): Comparing '/system/bin/sh' to '/system/bin/sh'

12-28 15:31:10.055 D/su (6014): Executing exec /system/bin/am broadcast -a com.noshufou.android.su.RESULT --es socket '' --ei caller_uid 10098 --ei allow 1 --ei version_code 18

12-28 15:31:11.075 D/AndroidRuntime(6014):

12-28 15:31:11.075 D/AndroidRuntime(6014): >>>>>> AndroidRuntime START com.android.internal.os.RuntimeInit <<<<<<

12-28 15:31:11.075 D/AndroidRuntime(6014): CheckJNI is OFF

12-28 15:31:11.265 D/dalvikvm(6014): Trying to load lib libjavacore.so 0x0

12-28 15:31:11.395 D/dalvikvm(6014): Added shared lib libjavacore.so 0x0

12-28 15:31:11.605 D/dalvikvm(6014): Trying to load lib libnativehelper.so 0x0

12-28 15:31:11.605 D/dalvikvm(6014): Added shared lib libnativehelper.so 0x0

12-28 15:31:12.345 D/AndroidRuntime(6014): Calling main entry com.android.commands.am.Am

12-28 15:31:12.445 D/AndroidRuntime(6014): Shutting down VM

12-28 15:31:12.615 D/dalvikvm(6014): GC_CONCURRENT freed 99K, 81% free 498K/2560K, paused 0ms+1ms, total 171ms

12-28 15:31:12.855 D/su (6013): 10098 com.nolanlawson.logcat executing 0 /system/bin/sh using shell /system/bin/sh : sh

12-28 15:31:13.195 D/dalvikvm(5202): GC_CONCURRENT freed 1714K, 49% free 5475K/10631K, paused 3ms+13ms, total 115ms

12-28 15:31:13.505 D/su (6026): Found file /data/data/com.noshufou.android.su/files/stored/10098-0

12-28 15:31:13.505 D/su (6026): Comparing '/system/bin/sh' to '/system/bin/sh'

12-28 15:31:13.505 D/su (6027): Executing exec /system/bin/am broadcast -a com.noshufou.android.su.RESULT --es socket '' --ei caller_uid 10098 --ei allow 1 --ei version_code 18

12-28 15:31:13.865 D/AndroidRuntime(6027):

12-28 15:31:13.865 D/AndroidRuntime(6027): >>>>>> AndroidRuntime START com.android.internal.os.RuntimeInit <<<<<<

12-28 15:31:13.865 D/AndroidRuntime(6027): CheckJNI is OFF

12-28 15:31:13.925 D/dalvikvm(6027): Trying to load lib libjavacore.so 0x0

12-28 15:31:14.075 D/dalvikvm(6027): Added shared lib libjavacore.so 0x0

12-28 15:31:14.135 D/dalvikvm(6027): Trying to load lib libnativehelper.so 0x0

12-28 15:31:14.197 D/dalvikvm(6027): Added shared lib libnativehelper.so 0x0

12-28 15:31:15.145 D/AndroidRuntime(6027): Calling main entry com.android.commands.am.Am

12-28 15:31:15.245 D/AndroidRuntime(6027): Shutting down VM

12-28 15:31:15.415 D/dalvikvm(6027): GC_CONCURRENT freed 99K, 81% free 498K/2560K, paused 31ms+0ms, total 170ms

12-28 15:31:16.255 D/su (6026): 10098 com.nolanlawson.logcat executing 0 /system/bin/sh using shell /system/bin/sh : sh

12-28 15:31:16.295 D/PhoneStatusBar(441): addNotification score=0

12-28 15:31:16.355 D/su (6039): Found file /data/data/com.noshufou.android.su/files/stored/10098-0

12-28 15:31:16.355 D/su (6039): Comparing '/system/bin/sh' to '/system/bin/sh'

12-28 15:31:16.365 D/su (6040): Executing exec /system/bin/am broadcast -a com.noshufou.android.su.RESULT --es socket '' --ei caller_uid 10098 --ei allow 1 --ei version_code 18

12-28 15:31:16.915 D/AndroidRuntime(6040):

12-28 15:31:16.915 D/AndroidRuntime(6040): >>>>>> AndroidRuntime START com.android.internal.os.RuntimeInit <<<<<<

12-28 15:31:16.915 D/AndroidRuntime(6040): CheckJNI is OFF

12-28 15:31:16.935 V/PhoneStatusBar(441): setLightsOn(true)

12-28 15:31:17.075 D/dalvikvm(6040): Trying to load lib libjavacore.so 0x0

12-28 15:31:17.115 D/dalvikvm(6040): Added shared lib libjavacore.so 0x0

12-28 15:31:17.155 D/dalvikvm(6040): Trying to load lib libnativehelper.so 0x0

12-28 15:31:17.155 D/dalvikvm(6040): Added shared lib libnativehelper.so 0x0

12-28 15:31:18.535 D/AndroidRuntime(6040): Calling main entry com.android.commands.am.Am

12-28 15:31:18.625 D/AndroidRuntime(6040): Shutting down VM

12-28 15:31:18.625 D/dalvikvm(6040): GC_CONCURRENT freed 99K, 81% free 498K/2560K, paused 0ms+1ms, total 6ms

12-28 15:31:18.685 D/dalvikvm(5202): GC_CONCURRENT freed 1734K, 49% free 5489K/10631K, paused 3ms+62ms, total 131ms

12-28 15:31:18.865 D/su (6039): 10098 com.nolanlawson.logcat executing 0 /system/bin/sh using shell /system/bin/sh : sh

12-28 15:31:19.395 I/ActivityManager(354): START {act=android.intent.action.MAIN cat=[android.intent.category.HOME] flg=0x10200000 cmp=com.cyanogenmod.trebuchet/.Launcher u=0} from pid 354

12-28 15:31:19.985 D/dalvikvm(803): GC_CONCURRENT freed 1591K, 62% free 3163K/8195K, paused 15ms+8ms, total 158ms

12-28 15:31:20.025 I/Adreno200-EGL(555): <qeglDrvAPI_eglInitialize:294>: EGL 1.4 QUALCOMM build: AU_LINUX_ANDROID_JB.04.01.01.00.036_msm8960_JB_CL2644550_release_AU (CL2644550)

12-28 15:31:20.025 I/Adreno200-EGL(555): Build Date: 07/31/12 Tue

12-28 15:31:20.025 I/Adreno200-EGL(555): Local Branch:

12-28 15:31:20.025 I/Adreno200-EGL(555): Remote Branch: quic/master

12-28 15:31:20.025 I/Adreno200-EGL(555): Local Patches: NONE

12-28 15:31:20.025 I/Adreno200-EGL(555): Reconstruct Branch: AU_LINUX_ANDROID_JB.04.01.01.00.036 + NOTHING

12-28 15:31:20.555 V/KF Engine(522): getLastGPS couldn't find cached positional data

12-28 15:31:20.555 V/KF Engine(522): calculateTimeTable (invalid) @ 0.0x0.0: 1440 360 720 1080

12-28 15:31:22.616 I/ActivityManager(354): START {act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10200000 cmp=com.cyanogenmod.filemanager/.activities.NavigationActivity bnds=[12,286][86,368] u=0} from pid 555

12-28 15:31:28.815 I/ActivityManager(354): START {flg=0x4000 cmp=com.cyanogenmod.filemanager/.activities.BookmarksActivity u=0} from pid 5431

12-28 15:31:28.985 I/ActivityManager(354): Displayed com.cyanogenmod.filemanager/.activities.BookmarksActivity: +145ms

12-28 15:31:33.495 D/dalvikvm(354): GC_CONCURRENT freed 1559K, 36% free 9393K/14471K, paused 4ms+29ms, total 455ms

12-28 15:31:35.075 I/ActivityManager(354): Process com.google.android.apps.plus (pid 2019) has died.

12-28 15:31:35.325 I/ActivityManager(354): Process com.android.mms (pid 5168) has died.

12-28 15:31:35.335 D/CountryDetector(354): No listener is left

12-28 15:31:37.955 D/dalvikvm(5431): GC_CONCURRENT freed 1748K, 48% free 4300K/8195K, paused 5ms+13ms, total 80ms

12-28 15:31:40.145 D/dalvikvm(5431): GC_CONCURRENT freed 1939K, 50% free 4174K/8195K, paused 14ms+22ms, total 84ms

12-28 15:31:42.685 W/InputMethodManagerService(354): Window already focused, ignoring focus gain of: com.android.internal.view.IInputMethodClient$Stub$Proxy@2bcca420 attribute=null

12-28 15:31:43.325 I/ActivityManager(354): START {flg=0x4000 cmp=com.cyanogenmod.filemanager/.activities.BookmarksActivity u=0} from pid 5431

12-28 15:31:43.535 D/dalvikvm(354): GC_EXPLICIT freed 440K, 37% free 9196K/14471K, paused 5ms+9ms, total 116ms

12-28 15:31:43.665 I/ActivityManager(354): Displayed com.cyanogenmod.filemanager/.activities.BookmarksActivity: +304ms

12-28 15:31:46.525 D/dalvikvm(5431): GC_CONCURRENT freed 1678K, 48% free 4338K/8195K, paused 3ms+17ms, total 83ms

12-28 15:31:46.525 D/dalvikvm(5431): WAIT_FOR_CONCURRENT_GC blocked 19ms

12-28 15:31:50.155 D/dalvikvm(5431): GC_CONCURRENT freed 1819K, 47% free 4344K/8195K, paused 4ms+6ms, total 83ms

12-28 15:31:51.825 E/NavigationActivity(5431): Error detected

12-28 15:31:51.825 E/NavigationActivity(5431): com.cyanogenmod.filemanager.console.ReadOnlyFilesystemException: /system

12-28 15:31:51.825 E/NavigationActivity(5431): at com.cyanogenmod.filemanager.commands.shell.Shell.checkStdErr(Shell.java:132)

12-28 15:31:51.825 E/NavigationActivity(5431): at com.cyanogenmod.filemanager.commands.shell.SuperuserShell.checkStdErr(SuperuserShell.java:70)

12-28 15:31:51.825 E/NavigationActivity(5431): at com.cyanogenmod.filemanager.console.shell.ShellConsole.syncExecute(ShellConsole.java:581)

12-28 15:31:51.825 E/NavigationActivity(5431): at com.cyanogenmod.filemanager.console.shell.ShellConsole.execute(ShellConsole.java:422)

12-28 15:31:51.825 E/NavigationActivity(5431): at com.cyanogenmod.filemanager.util.CommandHelper.writableExecute(CommandHelper.java:1683)

12-28 15:31:51.825 E/NavigationActivity(5431): at com.cyanogenmod.filemanager.util.CommandHelper.writableExecute(CommandHelper.java:1575)

12-28 15:31:51.825 E/NavigationActivity(5431): at com.cyanogenmod.filemanager.util.CommandHelper.copy(CommandHelper.java:838)

12-28 15:31:51.825 E/NavigationActivity(5431): at com.cyanogenmod.filemanager.ui.policy.CopyMoveActionPolicy$1.doOperation(CopyMoveActionPolicy.java:361)

12-28 15:31:51.825 E/NavigationActivity(5431): at com.cyanogenmod.filemanager.ui.policy.CopyMoveActionPolicy$1.doInBackground(CopyMoveActionPolicy.java:326)

12-28 15:31:51.825 E/NavigationActivity(5431): at com.cyanogenmod.filemanager.ui.policy.ActionsPolicy$BackgroundAsyncTask.doInBackground(ActionsPolicy.java:131)

12-28 15:31:51.825 E/NavigationActivity(5431): at com.cyanogenmod.filemanager.ui.policy.ActionsPolicy$BackgroundAsyncTask.doInBackground(ActionsPolicy.java:88)

12-28 15:31:51.825 E/NavigationActivity(5431): at android.os.AsyncTask$2.call(AsyncTask.java:287)

12-28 15:31:51.825 E/NavigationActivity(5431): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)

12-28 15:31:51.825 E/NavigationActivity(5431): at java.util.concurrent.FutureTask.run(FutureTask.java:137)

12-28 15:31:51.825 E/NavigationActivity(5431): at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)

12-28 15:31:51.825 E/NavigationActivity(5431): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)

12-28 15:31:51.825 E/NavigationActivity(5431): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)

12-28 15:31:51.825 E/NavigationActivity(5431): at java.lang.Thread.run(Thread.java:856)

12-28 15:31:51.885 W/InputMethodManagerService(354): Window already focused, ignoring focus gain of: com.android.internal.view.IInputMethodClient$Stub$Proxy@2b9800a8 attribute=null

12-28 15:32:10.945 W/InputMethodManagerService(354): Window already focused, ignoring focus gain of: com.android.internal.view.IInputMethodClient$Stub$Proxy@2b914410 attribute=null

12-28 15:32:16.115 D/PhoneStatusBar(441): disable: < expand icons alerts TICKER* system_info back home recent clock >

12-28 15:32:17.445 W/KeyguardViewMediator(354): verifyUnlock called when not externally disabled

12-28 15:32:17.715 W/InputMethodManagerService(354): Window already focused, ignoring focus gain of: com.android.internal.view.IInputMethodClient$Stub$Proxy@2bad9430 attribute=null

12-28 15:32:17.735 D/PhoneStatusBar(441): disable: < expand icons alerts ticker* system_info back home recent clock >

12-28 15:32:18.365 I/ActivityManager(354): Process com.avast.android.antitheft (pid 4320) has died.

12-28 15:32:18.455 I/ActivityManager(354): Process com.bel.android.dspmanager (pid 867) has died.

12-28 15:32:18.455 D/su (6181): Found file /data/data/com.noshufou.android.su/files/stored/10098-0

12-28 15:32:18.455 D/su (6181): Comparing '/system/bin/sh' to '/system/bin/sh'

12-28 15:32:18.455 D/su (6182): Executing exec /system/bin/am broadcast -a com.noshufou.android.su.RESULT --es socket '' --ei caller_uid 10098 --ei allow 1 --ei version_code 18

12-28 15:32:18.455 W/ActivityManager(354): Scheduling restart of crashed service com.bel.android.dspmanager/.service.HeadsetService in 5000ms

12-28 15:32:18.865 D/AndroidRuntime(6182):

12-28 15:32:18.865 D/AndroidRuntime(6182): >>>>>> AndroidRuntime START com.android.internal.os.RuntimeInit <<<<<<

12-28 15:32:18.865 D/AndroidRuntime(6182): CheckJNI is OFF

12-28 15:32:18.905 D/dalvikvm(6182): Trying to load lib libjavacore.so 0x0

12-28 15:32:18.905 D/dalvikvm(6182): Added shared lib libjavacore.so 0x0

12-28 15:32:18.925 D/dalvikvm(6182): Trying to load lib libnativehelper.so 0x0

12-28 15:32:18.925 D/dalvikvm(6182): Added shared lib libnativehelper.so 0x0

12-28 15:32:19.295 D/AndroidRuntime(6182): Calling main entry com.android.commands.am.Am

12-28 15:32:19.325 D/AndroidRuntime(6182): Shutting down VM

12-28 15:32:19.325 D/dalvikvm(6182): GC_CONCURRENT freed 99K, 81% free 498K/2560K, paused 0ms+1ms, total 4ms

12-28 15:32:19.615 D/su (6181): 10098 com.nolanlawson.logcat executing 0 /system/bin/sh using shell /system/bin/sh : sh

12-28 15:32:19.995 D/su (6194): Found file /data/data/com.noshufou.android.su/files/stored/10098-0

12-28 15:32:19.995 D/su (6194): Comparing '/system/bin/sh' to '/system/bin/sh'

12-28 15:32:19.995 D/su (6195): Executing exec /system/bin/am broadcast -a com.noshufou.android.su.RESULT --es socket '' --ei caller_uid 10098 --ei allow 1 --ei version_code 18

12-28 15:32:20.145 D/AndroidRuntime(6195):

12-28 15:32:20.145 D/AndroidRuntime(6195): >>>>>> AndroidRuntime START com.android.internal.os.RuntimeInit <<<<<<

12-28 15:32:20.145 D/AndroidRuntime(6195): CheckJNI is OFF

12-28 15:32:20.165 D/dalvikvm(6195): Trying to load lib libjavacore.so 0x0

12-28 15:32:20.165 D/dalvikvm(6195): Added shared lib libjavacore.so 0x0

12-28 15:32:20.175 D/dalvikvm(6195): Trying to load lib libnativehelper.so 0x0

12-28 15:32:20.175 D/dalvikvm(6195): Added shared lib libnativehelper.so 0x0

12-28 15:32:20.445 D/AndroidRuntime(6195): Calling main entry com.android.commands.am.Am

12-28 15:32:20.485 D/AndroidRuntime(6195): Shutting down VM

12-28 15:32:20.495 D/dalvikvm(6195): GC_CONCURRENT freed 99K, 81% free 498K/2560K, paused 0ms+1ms, total 5ms

12-28 15:32:20.635 D/dalvikvm(1733): GC_CONCURRENT freed 1866K, 30% free 6549K/9351K, paused 7ms+7ms, total 180ms

12-28 15:32:20.635 D/dalvikvm(1733): WAIT_FOR_CONCURRENT_GC blocked 77ms