Log信息过滤错误信息：
01-01 13:46:26.800: E/dalvikvm(27655): Dex cache directory isn't writable: /data/dalvik-cache
01-01 13:46:26.800: E/dalvikvm(27655): Dex cache directory isn't writable: /data/dalvik-cache
01-01 13:46:26.800: E/dalvikvm(27655): Dex cache directory isn't writable: /data/dalvik-cache
01-01 13:46:26.800: E/dalvikvm(27655): Dex cache directory isn't writable: /data/dalvik-cache
01-01 13:46:26.800: E/dalvikvm(27655): Dex cache directory isn't writable: /data/dalvik-cache
01-01 13:46:26.800: E/dalvikvm(27655): Dex cache directory isn't writable: /data/dalvik-cache
01-01 13:46:26.800: E/dalvikvm(27655): Dex cache directory isn't writable: /data/dalvik-cache
01-01 13:46:26.800: E/dalvikvm(27655): Dex cache directory isn't writable: /data/dalvik-cache
01-01 13:46:26.810: E/dalvikvm(27655): Dex cache directory isn't writable: /data/dalvik-cache
01-01 13:46:26.810: E/dalvikvm(27655): Dex cache directory isn't writable: /data/dalvik-cache
01-01 13:46:26.810: E/dalvikvm(27655): Dex cache directory isn't writable: /data/dalvik-cache
01-01 13:46:26.810: E/dalvikvm(27655): Dex cache directory isn't writable: /data/dalvik-cache
01-01 13:46:26.810: E/dalvikvm(27655): Dex cache directory isn't writable: /data/dalvik-cache
01-01 13:46:26.810: E/dalvikvm(27655): Dex cache directory isn't writable: /data/dalvik-cache
01-01 13:46:26.810: E/dalvikvm(27655): Dex cache directory isn't writable: /data/dalvik-cache
01-01 13:46:26.810: E/dalvikvm(27655): Dex cache directory isn't writable: /data/dalvik-cache
01-01 13:46:26.810: E/dalvikvm(27655): No valid entries found in bootclasspath '/system/framework/core.jar:/system/framework/conscrypt.jar:/system/framework/okhttp.jar:/system/framework/core-junit.jar:/system/framework/bouncycastle.jar:/system/framework/ext.jar:/system/framework/framework.jar:/system/framework/framework2.jar:/system/framework/telephony-common.jar:/system/framework/voip-common.jar:/system/framework/mms-common.jar:/system/framework/android.policy.jar:/system/framework/services.jar:/system/framework/apache-xml.jar:/system/framework/webviewchromium.jar:/system/framework/userExperienceService.jar'
01-01 13:46:26.810: E/dalvikvm(27655): VM aborting
01-01 13:46:26.810: A/libc(27655): Fatal signal 6 (SIGABRT) at 0x00006c07 (code=-6), thread 27655 (zygote)
01-01 13:46:28.120: E/CameraHal_Module(27696): xml_copy_and_write_camname 222OPEN /data/media_profiles.xml TEMP FALID w
01-01 13:46:28.120: E/CameraHal_Module(27696): Open /dev/video0 failed! strr: No such file or directory
01-01 13:46:28.130: E/AudioFlinger(27696): no wake lock to update!
查看mount结果：
root@rk3188:/data # mount
rootfs / rootfs ro,relatime 0 0
tmpfs /dev tmpfs rw,seclabel,nosuid,relatime,mode=755 0 0
devpts /dev/pts devpts rw,seclabel,relatime,mode=600 0 0
proc /proc proc rw,relatime 0 0
sysfs /sys sysfs rw,seclabel,relatime 0 0
selinuxfs /sys/fs/selinux selinuxfs rw,relatime 0 0
none /acct cgroup rw,relatime,cpuacct 0 0
none /sys/fs/cgroup tmpfs rw,seclabel,relatime,mode=750,gid=1000 0 0
none /sys/fs/cgroup/memory cgroup rw,relatime,memory 0 0
tmpfs /mnt/secure tmpfs rw,seclabel,relatime,mode=700 0 0
tmpfs /mnt/asec tmpfs rw,seclabel,relatime,mode=755,gid=1000 0 0
tmpfs /mnt/obb tmpfs rw,seclabel,relatime,mode=755,gid=1000 0 0
none /dev/cpuctl cgroup rw,relatime,cpu 0 0
/dev/block/platform/emmc/by-name/system /system ext4 rw,seclabel,relatime,user_xattr,barrier=1,data=ordered,noauto_da_alloc 0 0
/dev/block/platform/emmc/by-name/cache /cache ext4 rw,seclabel,nosuid,nodev,noatime,nodiratime,user_xattr,barrier=1,data=ordered,noauto_da_alloc,discard 0 0
/sys/kernel/debug /sys/kernel/debug debugfs rw,relatime 0 0
/dev/fuse /mnt/shell/emulated fuse rw,nosuid,nodev,relatime,user_id=1023,group_id=1023,default_permissions,allow_other 0 0
root@rk3188:/data #
居然没有data分区，这是怎么回事？先更新为4.4的paremeter进行测试。
更新后问题得以解决，拍照留念，这就是传说中的经验？
root@rk3188:/ # mount | grep data
/dev/block/platform/emmc/by-name/system /system ext4 ro,seclabel,noatime,nodiratime,user_xattr,barrier=1,data=ordered,noauto_da_alloc 0 0
/dev/block/platform/emmc/by-name/cache /cache ext4 rw,seclabel,nosuid,nodev,noatime,nodiratime,user_xattr,barrier=1,data=ordered,noauto_da_alloc,discard 0 0
/dev/block/platform/emmc/by-name/metadata /metadata ext4 rw,seclabel,nosuid,nodev,noatime,nodiratime,user_xattr,barrier=1,noauto_da_alloc,discard 0 0
/dev/block/platform/emmc/by-name/userdata /data ext4 rw,seclabel,nosuid,nodev,noatime,nodiratime,user_xattr,barrier=1,data=ordered,noauto_da_alloc,discard 0 0
root@rk3188:/ #