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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pvresize

PVRESIZE(8)						      System Manager's Manual						       PVRESIZE(8)

NAME

       pvresize - resize a disk or partition in use by LVM2

SYNOPSIS

       pvresize [-d|--debug] [-h|--help] [-t|--test] [-v|--verbose] [--setphysicalvolumesizesize] PhysicalVolume [PhysicalVolume...]

DESCRIPTION

       pvresize resizes PhysicalVolume which may already be in a volume group and have active logical volumes allocated on it.

OPTIONS

       See lvm(8) for common options.

       --setphysicalvolumesize size
	      Overrides the automatically-detected size of the PV.  Use with care, or prior to reducing the physical size of the device.

EXAMPLES

       Expand the PV on /dev/sda1 after enlarging the partition with fdisk:

       pvresize /dev/sda1

       Shrink the PV on /dev/sda1 prior to shrinking the partition with fdisk (ensure that the PV size is appropriate for your intended new parti-
       tion size):

       pvresize --setphysicalvolumesize 40G /dev/sda1

RESTRICTIONS

       pvresize will refuse to shrink PhysicalVolume if it has allocated extents after where its new end would be. In the future, it should  relo-
       cate these elsewhere in the volume group if there is sufficient free space, like pvmove does.

       pvresize won't currently work correctly on LVM1 volumes or PVs with extra metadata areas.

SEE ALSO

       lvm(8), pvmove(8), lvresize(8), fdisk(8)

Sistina Software UK					 LVM TOOLS 2.02.44-cvs (02-17-09)					       PVRESIZE(8)

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