[Bug server/19992] New: polymorphic operation

[Bug server/19992] New: polymorphic operation

[fche at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=19992

            Bug ID: 19992
           Summary: polymorphic operation
           Product: systemtap
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: server
          Assignee: systemtap at sourceware dot org
          Reporter: fche at redhat dot com
  Target Milestone: ---

A single stap-server daemon should be able to auto-configure itself to support
compilation services to all locally-installed kernels.  This could be done
either by the stap-server driver shell script (auto-forking N stap-serverd's),
or by stap-serverd (doing its own kernel-devel search, avahi-announcing itself
N times).  Clients already identify the target kernel of interest (the sysinfo:
field), so theoretically one TCP port could multiplex them.

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[Bug server/19992] polymorphic operation

[fche at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=19992

--- Comment #1 from Frank Ch. Eigler <fche at redhat dot com> ---
Probably the simplest user-interface to it would be to let stap-serverd accept
multiple "-r KERNEL-RELEASE" flags.  Let the stap-server shell script seek out
(or be configured with) all the kernel-devel type trees it can find and pass
them to stap-serverd via -r flags.

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[Bug server/19992] polymorphic operation

[flu at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=19992

Felix Lu <flu at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |flu at redhat dot com,
                   |                            |mcermak at redhat dot com

--- Comment #2 from Felix Lu <flu at redhat dot com> ---
Added in commit 3532c11da3918dab4.

We still need some nice way to test this feature. The host
needs to have multiple kernel-versions installed and running stap-server -i
should spawn a server that can handle all of the installed kernel-versions.

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[Bug server/19992] polymorphic operation

[mcermak at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=19992

--- Comment #3 from Martin Cermak <mcermak at redhat dot com> ---
Kicked off a new testcase: https://bugzilla.redhat.com/1337272 .

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[Bug server/19992] polymorphic operation

[mcermak at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=19992

--- Comment #4 from Martin Cermak <mcermak at redhat dot com> ---
The feature seems to work fine except of systemd based test boxes (el7), where
the current systemd unit file doesn't pass the -i option to the server.  Adding
it there by hand makes the testcase pass.  But I am not sure how to do this the
systemd way.  We should also think of how to pass the switch to the server in
case the server is called using the old style service command (which wraps
systemctl).

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[Bug server/19992] polymorphic operation

[flu at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=19992

Felix Lu <flu at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

--- Comment #5 from Felix Lu <flu at redhat dot com> ---
The stap-server service now passes the -i option as the default.

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[Bug server/19992] polymorphic operation

[fche at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=19992

--- Comment #6 from Frank Ch. Eigler <fche at redhat dot com> ---
*** Bug 14930 has been marked as a duplicate of this bug. ***

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