10-17-2010
Quote:
Originally Posted by
A.Srenivasan
[...]The scenario is.. The filesystem (/drbackup) is getting monitored and if it exceeds the threshold, we will receive an alert from it. The issue is that we receive an alert with the description of "Current Utilization exceeds 90%". But whenever I check in the server, it shows the value of only 10% (Current Utilization). So do we have any performance monitoring tool to find when it goes high and get reduced to low ?
From what you describe I would presume that the /drbackup FS is used for a backup which is copied after completion to another storage system (such as TSM) and then deletet from the /drbackup FS.
So you want to know what is going on in the FS when it gets full and at what time this happens.
You might start by configuring NMON to monitor the Filesystems, write the data into a file and use the
NMON-Analyser to convert the data into an Excel sheet. Choose the monitoring intervall according to the time needed to register the backup process. For details about NMON read the man page and look into the information in the
NMON wiki. The NMON output should give you a good picture of when this process takes place and to what extent the FS gets filled.
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LEARN ABOUT DEBIAN
dpm_addfs
DPM_ADDFS(3) DPM Library Functions DPM_ADDFS(3)
NAME
dpm_addfs - add a filesystem to a disk pool
SYNOPSIS
#include <sys/types.h>
#include "dpm_api.h"
int dpm_addfs (char *poolname, char *server, char *fs, int status, int weight)
DESCRIPTION
dpm_addfs adds a filesystem to a disk pool.
poolname
specifies the disk pool name previously defined using dpm_addpool.
server specifies the host name of the disk server where this filesystem is mounted.
fs specifies the mount point of the dedicated filesystem.
status Initial status of this filesystem. It can be set to 0 or FS_DISABLED or FS_RDONLY.
weight specifies the weight of the filesystem. This is used during the filesystem selection. The value must be positive. A negative value
will tell the server to allocate the default weight value (1). It is recommended to use a value lower than 10.
This function requires ADMIN privilege.
RETURN VALUE
This routine returns 0 if the operation was successful or -1 if the operation failed. In the latter case, serrno is set appropriately.
ERRORS
ENOENT Filesystem does not exist.
EACCES The caller does not have ADMIN privilege.
EFAULT poolname, server or fs is a NULL pointer.
EEXIST this filesystem is already part of a pool.
ENOMEM Memory could not be allocated for storing the filesystem definition.
EINVAL The pool is unknown or the length of poolname exceeds CA_MAXPOOLNAMELEN or the length of server exceeds CA_MAXHOSTNAMELEN or
the length of fs exceeds 79.
SENOSHOST Host unknown.
SEINTERNAL Database error.
SECOMERR Communication error.
LCG
$Date$ DPM_ADDFS(3)