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Rodrigo de Avila
Rodrigo de Avila

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LVM: como adicionar novo disco a um volume group

#sre #lvm #ptb

Qual disco será usado, e qual grupo será extendido?

$ lsblk
NAME            MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
sda               8:0    0   16G  0 disk
|-sda1            8:1    0    1G  0 part /boot
`-sda2            8:2    0   15G  0 part
  |-centos-root 253:0    0 29.4G  0 lvm  /
  `-centos-swap 253:1    0  1.6G  0 lvm
sdb               8:16   0   16G  0 disk
sr0              11:0    1 1024M  0 rom
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Aqui eu quero adicionar sdb ao / (grupo centos-root). Execute sempre como usuário root:

pvcreate /dev/sdb
lvmdiskscan -l
vgextend centos /dev/sdb
lvm lvextend -l +100%FREE /dev/mapper/centos-root
xfs_growfs /dev/mapper/centos-root
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