проверить и восстановить этикетку архива показателей производительности (check and repair a performance metrics archive label)
Имя (Name)
pmloglabel - check and repair a performance metrics archive label
Синопсис (Synopsis)
pmloglabel [-lLsv?] [-h hostname] [-p pid] [-V version] [-Z
timezone] archive
Описание (Description)
pmloglabel verifies, reports on, and can modify all details of
the labels in each of the files of a Performance Co-Pilot (PCP)
archive log. The archive log has the base name archive and must
have been previously created using pmlogger(1).
Each of the files in a PCP archive (metadata, temporal index, and
one or more data volumes) must contain a valid label at the
start, else the PCP tools will refuse to open the archive at all.
Thus, the primary function of pmloglabel is to be able to repair
any inconsistent or corrupt label fields, such that the entire
archive is not lost. It will not check the remainder of the
archive, but it will give you a fighting chance to recover
otherwise lost data. Together, pmloglabel and pmlogextract are
able to produce a valid PCP archive from many forms of
corruption.
Note that if the temporal index is found to be corrupt, the
"*.index" file can be safely moved aside and the archive will
still be accessible, however retrievals may take longer without
the index.
Параметры (Options)
The available command line options are:
-h hostname, --host=hostname
Modify the logged hostname in the archive label, for all
files in the archive.
-l, --label
Dump out the archive label, showing the log format version,
the time and date for the start and (current) end of the
archive, and the host from which the performance metrics
values were collected.
-L Like -l, just a little more verbose, showing also the
timezone and creator process identifier from the archive
label.
-p pid, --pid=pid
Set the process identifier stored in the archive label to
pid, for all files in the archive.
-s Rewrite the sentinel values which precede and follow the
archive label, for all files in the archive.
-v, --verbose
Verbose mode. Additional progress information is produced
at each step.
-V version, --version=version
Stamp the version number into the magic number field at the
start of the archive label, for all files in the archive.
-Z timezone, --timezone=timezone
Changes the timezone in the archive labels to timezone in
the format of the environment variable TZ as described in
environ(7).
-?, --help
Display usage message and exit.
Примеры (Examples)
The following demonstrates the use of pmloglabel in finding and
then correcting a corrupt field (PID) in the label of the
temporal index of an archive named "20080125".
$ pmdumplog -l 20080125
pmdumplog: Cannot open archive "20080125": Illegal label record at start of a PCP archive log file
$ pmloglabel 20080125
Mismatched PID (5264/5011) between temporal index and data volume 0
$ pmloglabel -p 5264 20080125
$ pmdumplog -l 20080125
Log Label (Log Format Version 2)
Performance metrics from host fw1
commencing Fri Jan 25 00:10:09.341 2008
ending Sat Jan 26 00:09:54.344 2008
Статус выхода (Exit)
pmloglabel exits with status 0 if the archive labels are clean.
If invoked incorrectly, the exit status will be 1. If corruption
is detected and still exists at the end, the exit status will be
2. If requested to write out the archive labels, and some aspect
of that write out fails, then the exit status will be 3.
Файлы (Files)
$PCP_LOG_DIR/pmlogger/<hostname>
Default directory for PCP archives containing performance
metric values collected from the host <hostname>.
Окружение PCP (PCP environment)
Environment variables with the prefix PCP_ are used to
parameterize the file and directory names used by PCP. On each
installation, the file /etc/pcp.conf contains the local values
for these variables. The $PCP_CONF variable may be used to
specify an alternative configuration file, as described in
pcp.conf(5).
Смотри также (See also)
PCPIntro(1), pmlogcheck(1), pmlogextract(1), pmlogger(1),
pmlogger_check(1), pmlogger_daily(1), pmlogrewrite(1),
pcp.conf(5) and pcp.env(5).
