Developers Guide

Volume management
8 Dell EMC SC Series with Red Hat Enterprise Linux 7x | CML1071
else
echo "WARN: OSMajor parameter of unknown value, exit 1"
exit 1
fi
The following shows the sample output from this script:
# ./scan_bus.sh
INFO: OS Major Rev. el7 detected!
Alternatively, the installation of the sg3_utils package would provide a native Red Hat command rescan-
scsi-bus.sh located in the /usr/bin folder.
# /usr/bin/rescan-scsi-bus.sh --alltargets
Scanning SCSI subsystem for new devices
[snip]
0 new or changed device(s) found.
0 remapped or resized device(s) found.
0 device(s) removed.
2.2 Partitions
Partitions (and partition tables) are not required for volumes other than the boot volume; use SC Series
volumes as whole drives. This leverages the native strengths of the SC Series wide striping of volumes
across all disks in the tier where the volume is provisioned. With a default RHEL 7.x installation, the boot
volume is partitioned into two: an XFS filesystem (default) is applied to the boot partition, and the other
partition is managed by Logical Volume Manager.
# parted
GNU Parted 3.1
Using /dev/sda
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted) select /dev/sda
Using /dev/sda
(parted) print
Model: SEAGATE ST9146803SS (scsi)
Disk /dev/sda: 147GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Disk Flags:
Number Start End Size Type File system Flags
1 1049kB 525MB 524MB primary xfs boot
2 525MB 147GB 146GB primary lvm
2.3 Logical Volume Manager
Logical Volume Manager (LVM) can be applied and used to manage volumes in Linux. It installs LVM
metadata (such as LVM signatures) to the volumes and uniquely identifies the physical volumes (PV), logical
volumes (LV), and volume groups (VG) accordingly. Mounting the snapshot view volumes on the same host
as the source volume is not recommended since it would result in duplicate LVM signatures.