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 OSX
newfs_exfat
NEWFS_EXFAT(8) BSD System Manager's Manual NEWFS_EXFAT(8)NAME
newfs_exfat -- construct a new ExFAT file system
SYNOPSIS
newfs_exfat [-N] [-R] [-I volume-serial-number] [-S bytes-per-sector] [-a sectors-per-FAT] [-b bytes-per-cluster] [-c sectors-per-cluster]
[-n number-of-FATs] [-s total-sectors] [-v volume-name] special
DESCRIPTION
The newfs_exfat utility creates an ExFAT file system on device special. If the -R option is not given, and the device is already formatted
as ExFAT, it will preserve the partition offset, bytes per cluster, FAT offset and size, number of FATs, offset to start of clusters, number
of clusters, volume serial number, and volume name (label). If a volume name was specified via the -v option, that name is used instead of
the volume's previous name.
The options are as follow:
-N Don't create a file system: just print out parameters.
-R Do not check whether the device is currently formatted as ExFAT. Always derive the partition offset, bytes per cluster, FAT offset
and size, and offset to start of clusters based on the device type and size.
-I volume-serial-number
Volume ID, a 32-bit integer.
-S bytes-per-sector
Number of bytes per sector. Acceptable values are powers of 2 in the range 512 through 4096.
-a sectors-per-FAT
Number of sectors per FAT.
-b bytes-per-cluster
File system block size (bytes per cluster). Acceptable values are powers of 2 in the range 512 through 33554432.
-c sectors-per-cluster
Sectors per cluster. Acceptable values are powers of 2 in the range 1 through 65536.
-n number-of-FATs
Number of FATs. Acceptable values are 1 or 2. The default is 1. Using any value other than 1 is discouraged, and may be incompati-
ble with other devices.
-s total-sectors
The total number of sectors in the device.
-v volume-name
Volume name (label). The name will be converted to UTF-16, and must be no longer than 11 UTF-16 characters. ASCII control charac-
ters and some punctuation characters are not allowed (similar to DOS 8.3-style names). NOTE: The volume name may be an empty (zero-
length) string.
EXAMPLES
newfs_exfat /dev/disk0s1
Create a file system, using default parameters (or existing ExFAT layout), on /dev/rdisk0s1.
newfs_exfat -v Hello disk2s1
Create a file system with the name "Hello" on /dev/rdisk2s1.
SEE ALSO mount_exfat(8), fsck_exfat(8)DIAGNOSTICS
Exit status is 0 on success and 1 on error.
HISTORY
The newfs_exfat command appeared in Mac OS X 10.6.3.
Darwin January 19, 2010 Darwin
03-12-2020
