I am trying to create an bash script to expand a LVM disk, I mean, trying to automatize all the process from the video bellow:
Youtube search:
How To Extend LVM Disk For Linux Virtual Machine On VMware
At this point, I am very new in bash script and I am facing this just as a try, I don't know if I will get the final result that I need.
Well, I am stuck at the grep option bellow:
Code:
#!/bin/bash
# Increase LVM Disk
echo"$(fdisk -l)"
echo Which disk you want to increase the size? "(Please provide the full path, Example: /dev/sda2):"
read disk1
diskcompare="$(fdisk -l | grep "$disk1 " -o --max-count=1)"
if [ "$diskcompare" == "$disk1 " ]; then
echo"Valid Disk."
else
echo"Invalid Disk."
fi
I would like to compare the path (disk1) with the fdisk -l command to check if it is a valid disk.
The problem is that the way that it is writed at the moment it accept you to continue the script if you not type the entire path, example:
Code:
[root@linuxtest ~]# ./test.sh
Disk /dev/sda: 16.1 GB, 16106127360 bytes, 31457280 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0x000d345c
Device Boot Start End Blocks Id System
/dev/sda1 * 2048 2099199 1048576 83 Linux
/dev/sda2 2099200 16777215 7339008 8e Linux LVM
/dev/sda3 16777216 31457279 7340032 8e Linux LVM
Disk /dev/mapper/centos-root: 14.2 GB, 14164164608 bytes, 27664384 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk /dev/mapper/centos-swap: 859 MB, 859832320 bytes, 1679360 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Which disk you want to increase the size? (Please provide the full path, Example: /dev/sda2):
/sda2
Valid Disk.
[root@linuxtest ~]#
It should match only the exactly values /dev/sda1 , /dev/sda2 or /dev/sda3.
Any help will be welcomed
Ty!
Last edited by Scrutinizer; 03-12-2020 at 09:14 AM..
Reason: quote tags -> code tags; Removed non-existing-font definition; Removed multi-color
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LEARN ABOUT HPUX
vgcfgbackup
vgcfgbackup(1M)vgcfgbackup(1M)NAME
vgcfgbackup - create or update LVM volume group configuration backup file
SYNOPSIS
vg_conf_path] vg_name
DESCRIPTION
The command saves the LVM configuration for a volume group in a default or alternate configuration backup file (see the option).
By default, runs automatically each time an LVM command changes the LVM configuration. In this case, it always uses the default configura-
tion backup file. An existing default configuration backup file is renamed with an extension of
Options and Arguments
recognizes the following options and arguments:
vg_name The path name of a volume group.
Save the configuration using an alternate file name specified by
vg_conf_path.
If is omitted, the default file name is in the form:
base_vg_name is the base name of vg_name. For example, if vg_name is specified as base_vg_name is
Update the configuration backup file with the latest LVM configuration.
Only those physical volumes added since the configuration backup file was last modified need to be online.
If is omitted, all physical volumes for vg_name must be online.
RETURN VALUE
exits with one of the following values:
Successful completion.
Failure.
Errors occurred when information from the volume group was being accessed.
EXTERNAL INFLUENCES
Environment Variables
determines the language in which messages are displayed.
If is not specified or is null, it defaults to "C" (see lang(5)).
If any internationalization variable contains an invalid setting, all internationalization variables default to "C" (see environ(5)).
EXAMPLES
Back up LVM configuration information for volume group in the default backup file
Update LVM configuration information corresponding to volume group in the default backup file
Back up LVM configuration information for volume group in the alternate configuration backup file
WARNINGS
It is recommended that any alternate configuration backup file be created in the root file system (as is the case with the default path
name). This facilitates easy volume group recovery during maintenance mode, such as after a system crash.
AUTHOR
was developed by HP.
SEE ALSO vgcfgrestore(1M).
vgcfgbackup(1M)
03-12-2020
