Creating file systems (LVM v Multipath) Post: 302956452

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Operating Systems Linux Creating file systems (LVM v Multipath) Post 302956452 by fretagi on Wednesday 30th of September 2015 05:46:41 AM

09-30-2015

Registered User

Creating file systems (LVM v Multipath)

Hi all

I have a system running:

Code:

 uname -o
GNU/Linux

that has already some file systems created:

Code:

 df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/mapper/vg_outsystemdb-lv_root
                       50G  2.7G   45G   6% /
tmpfs                  28G   72K   28G   1% /dev/shm
/dev/sda1             485M   38M  422M   9% /boot
/dev/mapper/vg_outsystemdb-lv_home
                      198G  171G   17G  91% /home
/dev/mapper/vg01-lvol1
                      394G  342G   33G  92% /oradata

And there is a need to add one more file system of 500Gb, in which the storage admin has already provided me with.

But I see that the other file systems have their volume group with some nomenclature that I am not aware of it, in term of skills, like:
/dev/mapper/vg, but as far as I know to create a new file system I just have to fdisk -l the required LUN, them choose 8e as the partition type, them pvcreate, vgcreate and lastly lvcreate.
But I am not sure this is the correct procedure, because the other file systems present on the system have this /dev/mapper.
Please correct me if I am wrong with my procedure

fretagi

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LEARN ABOUT V7

ppmtosixel

ppmtosixel(1)						      General Commands Manual						     ppmtosixel(1)

NAME

       ppmtosixel - convert a portable pixmap into DEC sixel format

SYNOPSIS

       ppmtosixel [-raw] [-margin] [ppmfile]

DESCRIPTION

       Reads  a  portable  pixmap  as input.  Produces sixel commands (SIX) as output.	The output is formatted for color printing, e.g. for a DEC
       LJ250 color inkjet printer.

       If RGB values from the PPM file do not have maxval=100, the RGB values are rescaled.  A printer control header and a color assignment table
       begin the SIX file.  Image data is written in a compressed format by default.  A printer control footer ends the image file.

OPTIONS

       -raw   If  specified,  each  pixel  will  be explicitly described in the image file.  If -raw is not specified, output will default to com-
	      pressed format in which identical adjacent pixels are replaced by "repeat pixel" commands.  A raw file is often an order	of  magni-
	      tude larger than a compressed file and prints much slower.

       -margin
	      If  -margin  is not specified, the image will be start at the left margin (of the window, paper, or whatever).  If -margin is speci-
	      fied, a 1.5 inch left margin will offset the image.

PRINTING

       Generally, sixel files must reach the printer unfiltered.  Use the lpr -x option or cat filename > /dev/tty0?.

BUGS

       Upon rescaling, truncation of the least significant bits of RGB values may result in poor color conversion.  If the original PPM maxval was
       greater	than  100,  rescaling  also reduces the image depth.  While the actual RGB values from the ppm file are more or less retained, the
       color palette of the LJ250 may not match the colors on your screen.  This seems to be a printer limitation.

SEE ALSO

       ppm(5)

AUTHOR

       Copyright (C) 1991 by Rick Vinci.

								   26 April 1991						     ppmtosixel(1)

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