[pcp] collect 12 newest pmlogger files regardless of size

[pmoravec]

To prevent pmlogger binary files to be truncated and to collect
reasonable count of the files (configurable via pcp.pmloggerfiles
plugin option).

Resolves: #1496

Signed-off-by: Pavel Moravec pmoravec@redhat.com

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[pmoravec]

Updated the PR to not tailing pmmgr logfiled.

There is another request to increase sizelimit of ${PCP_LOG_DIR}/pmmgr/$(hostname) directory from 100MB to 7GB that I have doubts on overall impact (more valuable data collected but for the price of longer sosreport runs and potentially out of diskspace on temp lvolume).

Any thoughts or opinion on the sizelimit increase (cc @bmr-cymru , @mbaldessari , @TurboTurtle , @sandrobonazzola )?

[pmoravec]

Updated the PR to not tailing pmmgr logfiled.

There is another request to increase sizelimit of ${PCP_LOG_DIR}/pmmgr/$(hostname) directory from 100MB to 7GB that I have doubts on overall impact (more valuable data collected but for the price of longer sosreport runs and potentially out of diskspace on temp lvolume).

Any thoughts or opinion on the sizelimit increase (cc @bmr-cymru , @mbaldessari , @TurboTurtle , @sandrobonazzola )?

Please disregard, no such requirement for pmmgr is requested.

What is required and the PR solves:

• from pmlogger, collect 12 newest files of whatever size (this might cause disk space issues if the files are huge, but let try now)
• from pmmgr, collect up to 100MB of logfiles and dont tail the "file just over limit"