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Sv translation

language	de

Warning

title	Advanced Topic

Warning - this is an advanced topic. Always backup your data first.

Erweitern des Stores mit LVM

Die meisten Linux / CentOS Installationen von uns arbeiten mit LVM. Dies kann man - vorausgesetzt das System erkennt eine Plattenvergrößerung oder neue Platte, wie folgt erweitern. Hier die Prozedur für eine Plattenerweiterung.

Schritt 1 - Feststellen der aktuellen config

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Code Block

language	bash
title	Display of discs

# If the machine has not yet been rebooted, the SCSI bus can be scanned to detect new disks with the following command
# Ggf - falls mehrere SCSI Adapter vorhanden sind host0 mit host1 oder host2 ... nochmals probieren bis die Platte gefunden wird
echo "- - -" > /sys/class/scsi_host/host0/scan
# Show free space
df -h
# Show partitions
fdisk -l
# Show hard drives
ls /dev/sd*
# View physical volumes managed by LVM
lvm pvs
# Display logical volumes managed by LVM
lvm lvs
# Display logical volume groups managed by LVM
lvm vgs
# Where is what mounted
mount

Die Informationen oben werden nun unten gebraucht.

Schritt 2 - Anlegen einer neuen Partition

Hier ist es erforderlich, dass man weiß, wo der zusätzlicher Platz zu finden ist. Es gibt 2 Varianten - entweder eine neue Platte, oder eine erweiterte Platte.

In beiden Fällen, wird eine neue Partition angelegt. Hier in diesen Beispiel, wurde die bestehende Platte erweitert. Falls eine neue Platte hinzugefügt wurde, dann ist es auf /dev/sdb oder /dev/sdc etc. zu finden.

Die Befehle unten sowie die Partitionsnummer (bei einer neuen Platte ist die Partition dann 1), entsprechend anpassen.

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Code Block

language	bash
title	Partitioning with fdisk

fdisk /dev/sda
 
# --> Edit the partitions on /dev/sda
 
n
# --> Create new partition
p
# --> New primary partition
3
# --> Create new partition 3 (view output at fdisk -1 above)
Enter
# --> Confirmation that the first available cylinder should be used
Enter
# --> Confirmation that the last available cylinder is to be used (gives the maximum size in total)
t
# --> Change partition type
3
# --> Edit partition 3
8e
# --> Linux LVM
w
# --> Write
 
reboot now

Schritt 3 - Hereinnahme in LVM - Device Erzeugen

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Code Block

language	bash
title	Create device for LVM

# Here is the previous output of /dev/sd* --> this is the new disk (the 3rd partition on /dev/sda, the first disk)
lvm pvcreate /dev/sda3

Schritt 4 - Volume Group erweitern

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Code Block

language	bash
title	Extend LVM

# Here we need the output of lvm vgs - the name of the volume group
lvm vgextend "vg_testdb5" /dev/sda3

Schritt 5 - Logical Volume erweitern

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Code Block

language	bash
title	Extend LVM

# Here the output of lvm lvs is needed - the name of the logical volume - this is combined with the vgs to create the path to the device
lvm lvresize -l +100%FREE /dev/vg_testdb5/lv_root

Schritt 6 - File System erweitern

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Code Block

language	bash
title	Extend LVM - ext filesystems

# Same path as previous command
resize2fs /dev/vg_testdb5/lv_root

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Code Block

language	bash
title	Extend LVM - xfs filesystems

# Mount Point from fstab
xfs_growfs /srv/jtel/shared

Schritt 7 - Endergebnis prüfen!

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Code Block

language	bash
title	Check final result

df -h

Sv translation

language	fr

Warning

title

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Code Block

language	bash
title

# If the machine has not yet been rebooted, the SCSI bus can be scanned to detect new disks with the following command # Ggf - falls mehrere SCSI Adapter vorhanden sind host0 mit host1 oder host2 ... nochmals probieren bis die Platte gefunden wird echo "- - -" > /sys/class/scsi_host/host0/scan # Show free space df -h # Show partitions fdisk -l # Show hard drives ls /dev/sd* # View physical volumes managed by LVM lvm pvs # Display logical volumes managed by LVM lvm lvs # Display logical volume groups managed by LVM lvm vgs # Where is what mounted mount

Code Block

[root@con-jtel-dbm-2 ~]# parted /dev/sda GNU Parted 3.1 Using /dev/sda Welcome to GNU Parted! Type 'help' to view a list of commands. (parted) print Error: The backup GPT table is not at the end of the disk, as it should be. This might mean that another operating system believes the disk is smaller. Fix, by moving the backup to the end (and removing the old backup)? Fix/Ignore/Cancel? Fix Warning: Not all of the space available to /dev/sda appears to be used, you can fix the GPT to use all of the space (an extra 134217728 blocks) or continue with the current setting? Fix/Ignore? Fix Model: Msft Virtual Disk (scsi) Disk /dev/sda: 137GB Sector size (logical/physical): 512B/4096B Partition Table: gpt Disk Flags: Number Start End Size File system Name Flags 1 1049kB 211MB 210MB fat16 EFI System Partition boot 2 211MB 1285MB 1074MB xfs 3 1285MB 68.7GB 67.4GB lvm (parted) quit

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Code Block

language	bash
title

fdisk /dev/sda   # --> Edit the partitions on /dev/sda   n # --> Create new partition p # --> New primary partition 3 # --> Create new partition 3 (view output at fdisk -1 above) Enter # --> Confirmation that the first available cylinder should be used Enter # --> Confirmation that the last available cylinder is to be used (gives the maximum size in total) t # --> Change partition type 3 # --> Edit partition 3 8e # --> Linux LVM w # --> Write   reboot now

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Code Block

language	bash
title

# Here is the previous output of /dev/sd* --> this is the new disk (the 3rd partition on /dev/sda, the first disk) lvm pvcreate /dev/sda3

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Code Block

language	bash
title

# Here we need the output of lvm vgs - the name of the volume group lvm vgextend "vg_testdb5" /dev/sda3

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Code Block

language	bash
title

# Here the output of lvm lvs is needed - the name of the logical volume - this is combined with the vgs to create the path to the device lvm lvresize -l +100%FREE /dev/vg_testdb5/lv_root

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Code Block

language	bash
title

# Same path as previous command resize2fs /dev/vg_testdb5/lv_root

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Code Block

language	bash
title

# Mount Point from fstab xfs_growfs /srv/jtel/shared

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Code Block

language	bash
title

df -h

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Erweitern des Stores mit LVM

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Erweitern des Stores mit LVM