Unable to locate trace log file used by api "trace_ext4_discard

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Unable to locate trace log file used by api "trace_ext4_discard_blocks"

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07-02-2014, 10:32 AM	#1
kush2490 LQ Newbie Registered: Jul 2014 Posts: 1 Rep:	Unable to locate trace log file used by api "trace_ext4_discard_blocks" I am trying to find the log file which is generated by "fstrim" /kernel/fs/ext4/fstrim.c. The android Framework gives me the error saying fstrim failed: "Failed to run FSTRIMcom.android.server.NativeDaemonConnectorException: missing output stream" But in the backend the FITRIM ioctl is called and trimming does take place. So i need to find where does this api "trace_ext4_discard_blocks" store this log file, Or how can i know what is stored in this log file.

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