Filesystem issues

[qdba]

Hello, 

At the moment I'm writing an extension which give some debug information during a payload run.

The function START_DEBUG "tail " the /var/log/syslog to /tmp/log.txt (I won't create a extra file because syslog give al lot of more useful information in background.)
During payload run I can output some information to syslog  with logger
With STOP_DEBUG I stop the "tail",  test if the /dev/nandf is mounted. If so I Copy /tmp/log.txt to /root/disk/loot. /If not I mount the /dev/nandf to /root/udisk, copy the file, do a sync and unmount the /dev/nandf.

 Now the Problem. It happens often that when I look in the loot file there is no log file and the FS is corrupted. This happens even I do a sync; sleep 1; sync after copy the file and befor unmounting the FS
It seems tha the FS is not unmunted correctly. Sometimes the dirty bit is set.

 

Have somebody any idea?

 

  

 

 

 

payload.txt

debug.sh

Edited April 10, 2017 by qdba