How do I trace jbd2 task activity?
Issue
- On one of our Virtual machines running on HyperV platform we encouter high journal writes up to 50Mb/sec.
- I have enabled debugfs and enabled tracing. It did not give me the output I really wanted.
- I want to know if its possible to "strace" the journal process. Actually I want to know which files are being written to the journal. (I know strace is not possible on kernel processes)
Environment
- Red Hat Enterprise Linux 6.5
- JBD2 journal task
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