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# Date Author Comment
306b855a 01/13/2014 07:43 pm Jose A. Lopes

Add helper function to tell if a daemon is alive

Add helper function 'utils.IsDaemonAlive' to tell if a daemon is alive
by name. This function will be necessary for the KVM hypervisor to
determine if the KVM daemon is running and otherwise start it.

Signed-off-by: Jose A. Lopes <>...

2f18052f 11/14/2012 10:16 am Michael Hanselmann

utils.process.RunResult: Always set "fail_reason" attribute

Signed-off-by: Michael Hanselmann <>
Reviewed-by: Iustin Pop <>

09b72783 11/12/2012 06:51 pm Michael Hanselmann

RunCmd: Expose "postfork" callback

The “_postfork_fn” parameter was only used for tests until now. To
implement a good locking scheme, remote commands must also make use of
this callback to release a lock when the command was successfully
started (but did not yet finish)....

10b86782 11/06/2012 07:59 pm Michael Hanselmann

Add utility to check if file is executable

This replaces direct calls to “os.access” and
“os.path.exists”/“os.path.isfile”.

Signed-off-by: Michael Hanselmann <>
Reviewed-by: Guido Trotter <>
Reviewed-by: Iustin Pop <>

d5d76ab2 10/26/2012 05:27 pm Michael Hanselmann

RunCmd: Support standard input file descriptor

This patch changes “utils.RunCmd” to accept a file-like object or a
numeric file descriptor which will be used as the command's standard
input. One use-case will be to pass all necessary data to
“prepare-node-join”....

21864565 04/26/2012 05:17 pm Iustin Pop

Log all external commands execution

This logs all external commands in normal (non-debug) mode. This will
leak the DRBD secrets, but in any case we do log failed commands, so
it's not a significant change.

Signed-off-by: Iustin Pop <>
Reviewed-by: Michael Hanselmann <>

b459a848 08/30/2011 11:24 am Andrea Spadaccini

DeprecationWarning fixes for pylint

In version 0.21, pylint unified all the disable-* (and enable-*)
directives to disable (resp. enable). This leads to a lot of
DeprecationWarning being emitted even if one uses the recommended
version of pylint (0.21.1, as stated in devnotes.rst)....

e687ec01 08/25/2011 01:53 pm Michael Hanselmann

PEP8 style fixes

Identified using the “pep8” utility.

Signed-off-by: Michael Hanselmann <>
Reviewed-by: Iustin Pop <>

eee68d57 08/04/2011 05:56 pm Agata Murawska

Fixed a typo in utils/process.py

Signed-off-by: Agata Murawska <>
Signed-off-by: Iustin Pop <>
Reviewed-by: Iustin Pop <>

0fa044e7 07/25/2011 04:06 pm Michael Hanselmann

Merge branch 'devel-2.4'

  • devel-2.4:
    Reopen daemon's stdio on SIGHUP
    Reopen log file only once after SIGHUP
    Don't leak file descriptors when setting up daemon output
    Fix aliases in bash completion

Signed-off-by: Michael Hanselmann <>...

110f49ef 07/25/2011 04:01 pm Michael Hanselmann

Reopen daemon's stdio on SIGHUP

Before this patch daemons would continue to refer to an old logfile for
their standard I/O if they had been asked to reopen the log (SIGHUP).

Signed-off-by: Michael Hanselmann <>
Reviewed-by: Iustin Pop <>

638ac34b 07/25/2011 04:01 pm Michael Hanselmann

Don't leak file descriptors when setting up daemon output

When a daemon's output is configured using “utils.SetupDaemonFDs”, the
function must use dup2(2). Unfortunately the code didn't close the
original file descriptors, leaking them in the process.

Signed-off-by: Michael Hanselmann <>...

d6491981 03/31/2011 12:44 pm René Nussbaumer

test.ganeti.process_unittest: Fix race condition

There was a race condition on heavily loaded testsystem causing randomly
to fail the timeout unittests as the signal handler is not yet setup but
the timeout has already hit.

Therefore we introduce a workaround to wait until a program reached a...

7b0bf9cd 01/11/2011 07:33 pm Apollon Oikonomopoulos

Add ability to retain specified fds open in RunCmd

Passing tap devices to KVM as file descriptors requires that the respective
file decriptors remain open during utils.RunCmd execution. To this direction,
we add a “noclose_fds” keyword argument to utils.RunCmd, accepting a list of...

a4ccecf6 01/11/2011 05:33 pm Michael Hanselmann

utils: Move process-related code into separate file

Signed-off-by: Michael Hanselmann <>
Reviewed-by: Iustin Pop <>