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Top Forums UNIX for Beginners Questions & Answers Understanding volumes and hard drives Post 303028299 by bakunin on Thursday 3rd of January 2019 09:14:12 PM
Old 01-03-2019
Quote:
Originally Posted by cptkirkh
Code:
mkfs  -t xfs -f /dev/sdb
  fdisk /dev/sdb
  ls -la /dev/sdb*
  pvcreate /dev/sdb1
  vgextend ol /dev/sdb1
  lvcreate -L 50GB -n lv_oradata ol
  lvdisplay ol/lv_oradata
  mkfs -t xfs -f /dev/ol/lv_oradata

If these commands have been entered in the order you posted them then you indeed seem not to understand what disks, volumes, partitions and filesystems are. You might profit from reading this little introduction i once wrote. This was for AIX, but the Linux LVM was built after the AIX LVM and the concepts are absolutely the same - just the commands are a little bit different.

I hope this helps.

bakunin

Last edited by RavinderSingh13; 01-03-2019 at 11:24 PM..
This User Gave Thanks to bakunin For This Post:
 

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

NAME
vgextend - add physical volumes to a volume group SYNOPSIS
vgextend [-A|--autobackup y|n] [-d|--debug] [-h|-?|--help] [--restoremissing] [-f|--force] [-t|--test] [-v|--verbose] [ PHYSICAL DEVICE OPTIONS ] VolumeGroupName PhysicalDevicePath [PhysicalDevicePath...] DESCRIPTION
vgextend allows you to add one or more initialized physical volumes ( see pvcreate(8) ) to an existing volume group to extend it in size. Moreover, it allows you to re-add a physical volume that has gone missing previously, due to a transient device failure, without re-ini- tialising it. Use vgextend --restoremissing to that effect. If PhysicalDevicePath was not previously configured for LVM with pvcreate (8), the device will be initialized with the same default values used with pvcreate. If non-default pvcreate values are are desired, they may be given on the commandline with the same options as pvcre- ate. See PHYSICAL DEVICE OPTIONS for available options. Note that the restore-related options such as --restorefile, --uuid, and --physi- calvolumesize are not available. If a restore operation is needed, use pvcreate (8) and vgcfgrestore (8). OPTIONS
See lvm for common options. PHYSICAL DEVICE OPTIONS
The following options are available for initializing physical devices in the volume group. These options are further described in the pvcreate man page. -f, --force -y, --yes -Z, --zero y|n --labelsector sector --metadatasize size [--metadataignorey|n] --pvmetadatacopies copies --dataalignment alignment --dataalignmentoffset alignment_offset Examples "vgextend vg00 /dev/sda4 /dev/sdn1" tries to extend the existing volume group "vg00" by the new physical volumes (see pvcreate(8) ) "/dev/sdn1" and /dev/sda4". SEE ALSO
lvm(8), vgcreate(8), vgreduce(8), pvcreate(8) Sistina Software UK LVM TOOLS 2.02.95(2) (2012-03-06) VGEXTEND(8)
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