device /dev/mapper/vg_umpom01brb-LogVol01 mounted on /proc/13142 with fstype ext4
device /dev/mapper/vg_umpom01brb-LogVol01 mounted on /proc/30085 with fstype ext4
device /dev/mapper/vg_umpom01brb-LogVol01 mounted on /proc/38674 with fstype ext4
I have a solaris server having oracle and oracle apps running !
When some one attempts to generate a code, they click a link on the web interface which runs an rsh script from a computer called Helpdesk onto my solaris server and what happens is the web interface show an error message saying... (4 Replies)
hi friends,
I am trying to automate the daily monitoring process of UNIX server and it's processes. the script are below
i executed the above script using ksh -x monitortest1.sh in root login . It shows error at some lines .
1. i logged in using root ,but it... (8 Replies)
Hi,
I am trying to calculate the CPU Usage by getting the difference between the idle time reported by /proc/stat at 2 different intervals. Now the 4th entry in the first line of /proc/stat will give me the 'idle time'. But I also came across /proc/uptime that gives me 2 entries : 1st one as the... (0 Replies)
Hi all!!
1. I am totally new to Mail server but now in our management decided to run own
mail server, still now we are running our mail server using godaddy!! if we
transfer
all mail accounts to here means what are the steps i need to do??
2. I have basic idea in postfix , which... (2 Replies)
I currently have a web server its on a small harddrive I didn't know my site would grow so fast but now I need a bigger hard drive. Instead of adding another harddrive (host charge monthly of how many hard drives connected to server) is there anyway to just move the whole os to a bigger hard drive... (2 Replies)
Hi,
I am currently in the process of implementing port based authentication(802.1x) in my home network through radius(FreeRadius).
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Hello everyone,
I would like to setup a lamp server from a minimal distro and to compile PHP, MySQL and Apache myself.
I have chosen CentOS minimal for the OS and I am trying to build the stack by hand... But well, it appears I need some help!
First: I am looking for good and recent... (3 Replies)
I have a HP Proliant server with centOS.
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- NGINX
- PHP7
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Would you recommend FreeBSD or CentOS for this software.
Also how hard is it to set this up with FreeBSD compaired to CentOS?
I never used FreeBSD before, is it hard... (3 Replies)
Dear All,
I'm using AWS EC2 instance for my application. My application is high disk I/O based and EFS could not be used in my case.
So, i need to build my own NFS server on Ec2 instance. I'm looking for High availability solution for my disk which i shared for NFS. Looking for builtin... (5 Replies)
Discussion started by: Bala
5 Replies
LEARN ABOUT NETBSD
dm
DM(4) BSD Kernel Interfaces Manual DM(4)NAME
dm -- Device-mapper disk driver
SYNOPSIS
pseudo-device dm
DESCRIPTION
The dm driver provides the capability of creating one or more virtual disks based on the target mapping.
This document assumes that you're familiar with how to generate kernels, how to properly configure disks and pseudo-devices in a kernel con-
figuration file, and how to partition disks. This driver is used by the Linux lvm2tools to create and manage lvm in NetBSD.
Currently, the linear, zero, and error targets are implemented. Each component partition should be offset at least 2 sectors from the begin-
ning of the component disk. This avoids potential conflicts between the component disk's disklabel and dm's disklabel. In i386 it is offset
by 65 sectors, where 63 sectors are the initial boot sectors and 2 sectors are used for the disklabel which is set to be read-only.
In order to compile in support for dm, you must add a line similar to the following to your kernel configuration file:
pseudo-device dm #device-mapper disk device
dm may create linear mapped devices, zero, and error block devices. Zero and error block devices are used mostly for testing. Linear
devices are used to create virtual disks with linearly mapped virtual blocks to blocks on real disk. dm Device-mapper devices are controlled
through the /dev/mapper/control device. For controlling this device ioctl(2) calls are used. For the implementation of the communication
channel, the proplib(3) library is used. The protocol channel is defined as a proplib dictionary with needed values. For more details, look
at sys/dev/dm/netbsd-dm.h. Before any device can be used, every device-mapper disk device must be initialized. For initialization one line
must be passed to the kernel driver in the form of a proplib dictionary. Every device can have more than one table active. An example for
such a line is:
0 10240 linear /dev/wd1a 384
dm The first parameter is the start sector for the table defined with this line, the second is the length in sectors which is described with
this table. The third parameter is the target name. All other parts of this line depend on the chosen target. dm For the linear target,
there are two additional parameters: The first parameter describes the disk device to which the device-mapper disk is mapped. The second
parameter is the offset on this disk from the start of the disk/partition.
SEE ALSO config(1), proplib(3), MAKEDEV(8), dmsetup(8), fsck(8), lvm(8), mount(8), newfs(8)HISTORY
The device-mapper disk driver first appeared in NetBSD 6.0.
AUTHORS
Adam Hamsik <haad@NetBSD.org> implemented the device-mapper driver for NetBSD.
Brett Lymn <blymn@NetBSD.org>,
Reinoud Zandijk <reinoud@NetBSD.org>, and
Bill Stouder-Studenmund <wrstuden@NetBSD.org> provided guidance and answered questions about the NetBSD implementation.
BUGS
This driver is still work-in-progress--there can be bugs.
BSD August 30, 2008 BSD