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Special Forums Hardware Filesystems, Disks and Memory Clustered filesystem which one to pick Post 303003285 by jokken on Monday 11th of September 2017 05:16:59 PM
Old 09-11-2017
i guess I can change my question to ask:

is there a distributed filesystem I can use on a large fiber channel drive that will let multiple servers write to the drive without corrupting data, but that doesn't require a controlling/clustering server like CEPH and GFS2 does?

not sure if I asked that question with the correct terms but maybe it will generate some discussion in the area I'm unsure about, thx!
 

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PMDAGFS2(1)						      General Commands Manual						       PMDAGFS2(1)

NAME
pmdagfs2 - Global Filesystem v2 (GFS2) PMDA DESCRIPTION
pmdagfs2 is a Performance Metrics Domain Agent (PMDA) which exports metric values about mounted GFS2 filesystems from the debugfs filesys- tem. This PMDA requires debugfs along with at least one mounted GFS2 filesystem to be mounted in order to be able to provide metric data. This PMDA can be used with GFS2 filesystems which are both mounted as local filesystems and filesystems which are mounted as shared stor- age within a clustered environment. However there are some metrics which specifically require GFS2 to be setup in a clustered environment to be able to provide metric data. This is due to them expecting locking messages to be passed via the distributed lock manager (DLM) between nodes of a cluster in order to generate their output. These cluster-environment-only metrics can be distinguished by the inclusion of their corresponding control metrics so that they can be optionally enabled or disabled on systems where they are not desired to be monitored or not supported. pmstore(3) can be used to assign values to these control metrics in order to enable (1) or disable (0) them. This mechanism is also useful on distributions that do not currently have full support for the GFS2 trace-points or provide older versions of the GFS2 driver. Further details on clustering and GFS2 can be found at http://redhat.com INSTALLATION
Install the GFS2 PMDA by using the Install script as root: # cd $PCP_PMDAS_DIR/gfs2 # ./Install To uninstall, do the following as root: # cd $PCP_PMDAS_DIR/gfs2 # ./Remove pmdagfs2 is launched by pmcd(1) and should never be executed directly. The Install and Remove scripts notify pmcd when the agent is installed or removed. FILES
$PCP_PMDAS_DIR/gfs2/help default help text file for the GFS2 metrics $PCP_PMDAS_DIR/gfs2/Install installation script for the pmdagfs2 agent $PCP_PMDAS_DIR/gfs2/Remove undo installation script for the pmdagfs2 agent $PCP_LOG_DIR/pmcd/gfs2.log default log file for error messages from pmdagfs2 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 configura- tion file, as described in pcp.conf(5). SEE ALSO
pmcd(1), pmstore(1), and gfs2(5). Performance Co-Pilot PCP PMDAGFS2(1)
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