tech:documentation:procedures:vm:vm_disk_expansion_lvm_xfs
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tech:documentation:procedures:vm:vm_disk_expansion_lvm_xfs [2009/07/01 16:17] – kohofer | tech:documentation:procedures:vm:vm_disk_expansion_lvm_xfs [2011/08/11 16:13] – kohofer | ||
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- | ======VM disk Expansion LVM+XFS======= | + | ====== VM disk Expansion LVM+XFS ======= |
Expand the original disk or add a second vdisk from Infrastructure client.\\ If you want to perform a grow w/o reboot you have to add a second disk | Expand the original disk or add a second vdisk from Infrastructure client.\\ If you want to perform a grow w/o reboot you have to add a second disk | ||
Line 5: | Line 5: | ||
then from on the vm either create an additional partition on the free space. The partition type is 8e | then from on the vm either create an additional partition on the free space. The partition type is 8e | ||
- | < | + | |
- | cfdisk /dev/sda | + | cfdisk /dev/sda |
- | ### for example if the new partition is /dev/sda3 | + | # for example if the new partition is /dev/sda3 |
+ | |||
+ | # create logical disk /dev/sda3 | ||
# make disk visible to linux | # make disk visible to linux | ||
- | partprobe | + | |
- | pvcreate /dev/sda3 | + | |
- | </code> | + | pvcreate /dev/sda3 |
+ | |||
+ | |||
+ | if you are running a newer kernel you can issue this command to male linux re-read the disk geometry: | ||
+ | |||
+ | echo " | ||
or assign the whole new disk to lvm assuming it's /dev/sdb | or assign the whole new disk to lvm assuming it's /dev/sdb | ||
- | < | + | |
- | apt-get install scsitools | + | apt-get install scsitools |
- | rescan-scsi-bus.sh | + | rescan-scsi-bus.sh |
- | cfdisk /dev/sdb | + | cfdisk /dev/sdb |
### for example if the new partition is /dev/sda3 | ### for example if the new partition is /dev/sda3 | ||
- | pvcreate /dev/sdb | + | |
- | </ | + | pvcreate /dev/sdb |
now you have to extend the volgroup. use '' | now you have to extend the volgroup. use '' | ||
- | < | + | |
- | lvdisplay | + | lvdisplay |
--- Logical volume --- | --- Logical volume --- | ||
LV Name / | LV Name / | ||
Line 82: | Line 92: | ||
- | </ | + | and we assume the new partition is /dev/sda3 |
- | < | + | |
- | vgextend base /dev/sda3 | + | |
- | </ | + | |
check with '' | check with '' | ||
- | < | + | |
- | pvscan | + | |
- | </ | + | |
Now we extend the " | Now we extend the " | ||
11.5 G is the NEW total size of the disk we want to extend! | 11.5 G is the NEW total size of the disk we want to extend! | ||
- | < | + | |
- | lvextend -L 11.5G / | + | lvextend -L 11.5G / |
- | </code> | + | |
+ | Extend with 20G | ||
+ | |||
+ | |||
+ | lvextend -L +20G | ||
now we have to grow the filesystem /data | now we have to grow the filesystem /data | ||
- | < | + | |
- | xfs_growfs /data | + | |
- | </code> | + | |
+ | |||
+ | ===== For swap ===== | ||
+ | |||
+ | swapoff | ||
+ | lvextend -L 3.9G / | ||
+ | mkswap / | ||
+ | swapon / | ||
+ | free | ||
Check if filesystems are ok, and only then release the snapshot | Check if filesystems are ok, and only then release the snapshot | ||
+ | |||
+ | For ext2/ext3 | ||
+ | |||
+ | resize2fs / | ||
+ | |||
+ | ======= Create LVM ======= | ||
+ | |||
+ | Find all LVM VG | ||
+ | |||
+ | vgscan | ||
+ | |||
+ | Create Physical Volumes | ||
+ | |||
+ | Der Befehl pvcreate legt den VGDA Block auf dem PV an. Er muss für jedes PV ausgeführt werden, bevor es von LVM verwendet werden kann: | ||
+ | |||
+ | | ||
+ | |||
+ | Volume Groups anlegen | ||
+ | |||
+ | Jetzt legen wir mit ' | ||
+ | |||
+ | | ||
+ | |||
+ | Logische Volumes anlegen. | ||
+ | |||
+ | Hier legen wir jetzt alle unsere logischen Volumes an. Als Namen verwenden wir, etwas fantasielos, | ||
+ | |||
+ | | ||
+ | |||
+ | Filesysteme anlegen | ||
+ | |||
+ | Ab jetzt können die logischen Partitionen, | ||
+ | |||
+ | mkfs.ext4 / | ||
+ | |||
+ | fstab anpassen | ||
+ | |||
+ | Damit die neuen Filesysteme nun bei jedem Systemstart automatisch gemountet werden, müssen wir sie in die Datei /etc/fstab eintragen (siehe 'man fstab' | ||
+ | |||
+ | / | ||
+ | |||
+ | http:// | ||
+ | |||
+ |
/data/www/wiki.inf.unibz.it/data/pages/tech/documentation/procedures/vm/vm_disk_expansion_lvm_xfs.txt · Last modified: 2020/10/13 16:46 by kohofer