[Bug runtime/6930] New: Flight Recorder on file

[Bug runtime/6930] New: Flight Recorder on file

[mhiramat at redhat dot com]

We already have flight recorder on memory. However, sometimes user needs on-file
flight recorder mode for system auditing and system performance logging
(Perhaps, someday someone might want flight recorder over network too, but that
is another story :) ).

This flight-recorder on memory feature requires
- setting maximum file size (and wrap-around writing which is able to overwrite
trace data when file size reaches maximum)
- signal-handler for log-file switching without any information loss (like as
logrotate) for auditing use.

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           Summary: Flight Recorder on file
           Product: systemtap
           Version: unspecified
            Status: NEW
          Severity: enhancement
          Priority: P2
         Component: runtime
        AssignedTo: systemtap at sources dot redhat dot com
        ReportedBy: mhiramat at redhat dot com


http://sourceware.org/bugzilla/show_bug.cgi?id=6930

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[Bug runtime/6930] Flight Recorder on file

[mhiramat at redhat dot com]

------- Additional Comments From mhiramat at redhat dot com  2008-10-02 16:49 -------
This also make staprun a daemon process.

-- 


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[Bug runtime/6930] Flight Recorder on file

[mhiramat at redhat dot com]

------- Additional Comments From mhiramat at redhat dot com  2008-10-06 18:57 -------
(In reply to comment #0)
> - signal-handler for log-file switching without any information loss (like as
> logrotate) for auditing use.

Oops, this one should be
-switching to new log-file when exceeding specified file size without any loss.


-- 


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[Bug runtime/6930] Flight Recorder on file

[mhiramat at redhat dot com]

------- Additional Comments From mhiramat at redhat dot com  2008-11-06 21:23 -------
This feature could be change -F option, or the combination of options.
For example:
Idea A) modifying -F option
$ stap -F memory xxx.stp  -> flight recorder on memory
$ stap -F file=1G -o file xxx.stp -> flight recorder on file(When the file size
reaches 1GB, change to next file (file.1->file.2->file.3->...))
$ stap -F file=1G,2 -o file xxx.stp -> flight recorder on file(When the file
size reaches 1GB, change to next file. And rotate 2 files for
recording(file.1->file.2->file.1->...))

B) or combination of options
$ stap -F xxx.stp  -> flight recorder on memory
$ stap -F -o file -S 1G xxx.stp -> flight recorder on file(When the file size
reaches 1GB, change to next file (file1->file2->file3->...))
$ stap -F -o file -S 1G,2 xxx.stp -> flight recorder on file(When the file size
reaches 1GB, change to next file. And rotate 2 files for
recording(file1->file2->file1->...))


-- 


http://sourceware.org/bugzilla/show_bug.cgi?id=6930

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[Bug runtime/6930] Flight Recorder on file

[mhiramat at redhat dot com]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|systemtap at sources dot    |mhiramat at redhat dot com
                   |redhat dot com              |
             Status|NEW                         |ASSIGNED


http://sourceware.org/bugzilla/show_bug.cgi?id=6930

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