# ioscan -f | grep disk
Class I H/W Path Driver S/W State H/W Type Description
disk 3 0/0/2/0.0.0.0 sdisk CLAIMED DEVICE TEAC DV-28E-N
disk 1 0/1/1/0.0.0 sdisk CLAIMED DEVICE HP 146 GST3146707LC ... (1 Reply)
Hi,
I had a doubt regarding device mapper notations and their corresponding LVM volumes.
I have configured a volume group with two logical volumes in it as root and swap.
The entries in the /etc/fstab file show the dm notations namely,
/dev/mapper/VolGroup00-LogVol01... (2 Replies)
hello
my centOS newly installed system loading dmraid modules on startup
I did remove all LVM/raid things from system installation menus and after installation too but dmraid is still there
and he says: no raid disks found
also I did modprobe -r dm_raid45 and it do remove it but only until... (7 Replies)
Hi,
I have a server program that reads data coming in on USB ports. Device paths are in the format: /dev/ttyUSB0
Now, I would like to log data from another device coming in over Ethernet. My first step is trying to track down what the correct device path is which I am unsure of.
Anyone... (9 Replies)
Good morning
Recently we needed to change the password from a redhat 6.5 system that no one knew the root password.
Starting the system with the init=/bin/bash method took us to the following scenario:
system_vg active with only root_lv and tmpfs mounted.
our entries at fstab are like... (1 Reply)
Hi,
How to find the raw device/multipath details of the LUN used by the diskgroups of the database.
file system type -- ASM
Oracle -- 11.2.0.3.0
OS -- Linux
This is RAC database.
Regards,
Maddy (2 Replies)
Hi,
I am testing on iSCSI + multipath, where i have one iSCSI lun assigned to one server.
mpatha (1IET 00010001) dm-2 IET,VIRTUAL-DISK
size=100M features='0' hwhandler='0' wp=rw
|-+- policy='round-robin 0' prio=1 status=active
| `- 2:0:0:1 sda 8:0 active ready running
`-+-... (6 Replies)
Currently I am using this laborious command
lvdisplay | awk '/LV Path/ {p=$3} /LV Name/ {n=$3} /VG Name/ {v=$3} /Block device/ {d=$3; sub(".*:", "/dev/dm-", d); printf "%s\t%s\t%s\n", p, "/dev/mapper/"v"-"n, d}'
Would like to know if there is any shorter method to get this mapping of... (2 Replies)
Hello,
I am trying to setup a storage server with salvaged equipments:
QSSC-S4R server, with QLogic 2562 FC HBA's
Clariion KTN-STL4 4GB FC Enclosures
Disks Salvaged from EMC Vmax
Disks are 520B sector size so i converted to 512B in linux environment and create multipath successfully. But... (4 Replies)
Discussion started by: amd103
4 Replies
LEARN ABOUT DEBIAN
log::log4perl::appender::rrds
Appender::RRDs(3pm) User Contributed Perl Documentation Appender::RRDs(3pm)NAME
Log::Log4perl::Appender::RRDs - Log to a RRDtool Archive
SYNOPSIS
use Log::Log4perl qw(get_logger);
use RRDs;
my $DB = "myrrddb.dat";
RRDs::create(
$DB, "--step=1",
"DS:myvalue:GAUGE:2:U:U",
"RRA:MAX:0.5:1:120");
print time(), "
";
Log::Log4perl->init(qq{
log4perl.category = INFO, RRDapp
log4perl.appender.RRDapp = Log::Log4perl::Appender::RRDs
log4perl.appender.RRDapp.dbname = $DB
log4perl.appender.RRDapp.layout = Log::Log4perl::Layout::PatternLayout
log4perl.appender.RRDapp.layout.ConversionPattern = N:%m
});
my $logger = get_logger();
for(10, 15, 20, 25) {
$logger->info($_);
sleep 1;
}
DESCRIPTION
"Log::Log4perl::Appender::RRDs" appenders facilitate writing data to RRDtool round-robin archives via Log4perl. For documentation on RRD
and its Perl interface "RRDs" (which comes with the distribution), check out <http://rrdtool.org>.
Messages sent to Log4perl's RRDs appender are expected to be numerical values (ints or floats), which then are used to run a "rrdtool
update" command on an existing round-robin database. The name of this database needs to be set in the appender's "dbname" configuration
parameter.
If there's more parameters you wish to pass to the "update" method, use the "rrdupd_params" configuration parameter:
log4perl.appender.RRDapp.rrdupd_params = --template=in:out
To read out the round robin database later on, use "rrdtool fetch" or "rrdtool graph" for graphic displays.
COPYRIGHT AND LICENSE
Copyright 2002-2009 by Mike Schilli <m@perlmeister.com> and Kevin Goess <cpan@goess.org>.
This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
perl v5.10.1 2010-07-21 Appender::RRDs(3pm)