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Top Forums UNIX for Dummies Questions & Answers Question about lvm file creation Post 302925736 by stew on Wednesday 19th of November 2014 04:46:24 AM
Old 11-19-2014
Question about lvm file creation

Hi,

I have below code for disk creation

Code:
disk_list=$(ls /dev/sd[b-z])
for disk in $disk_list
do
pvcreate $i
done

So what my understanding is first it is checking the disk under /dev sdb,sdc,sdd,...sdz whether 25 disk are existing

if not then its creating the 25 physical volume.

I tried the below code from my local directory since can't take pvcreate risk

Code:
#!/bin/ksh
disk_list=$(ls /etc/mylocal/ab[a-c])
for i in $disk_list
do
touch  $i
done

I got below error
Code:
ls: cannot access /etc/mylocal/ab[a-c]: No such file or directory

I have not created any file like aba,abb...under my local so if the file not present then it should create all the files right why I am getting an error.

Please correct me if am I wrong

Last edited by stew; 11-19-2014 at 05:57 AM..
 

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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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