kvm_grow_pv
KVM grow PV
- Current partition table:
# fdisk -l /dev/sda Disk /dev/sda: 2000.3 GB, 2000341917696 bytes, 3906917808 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 262144 bytes / 524288 bytes Disk label type: dos Disk identifier: 0x000b9cd2 Device Boot Start End Blocks Id System /dev/sda1 * 2048 1026047 512000 83 Linux /dev/sda2 1026048 592416767 295695360 8e Linux LVM
- Remove /dev/sda2 partition and create a new bigger one:
# fdisk /dev/sda Welcome to fdisk (util-linux 2.23.2). Changes will remain in memory only, until you decide to write them. Be careful before using the write command. Command (m for help): d Partition number (1,2, default 2): 2 Partition 2 is deleted Command (m for help): n Partition type: p primary (1 primary, 0 extended, 3 free) e extended Select (default p): p Partition number (2-4, default 2): 2 First sector (1026048-3906917807, default 1026048): Using default value 1026048 Last sector, +sectors or +size{K,M,G} (1026048-3906917807, default 3906917807): +512G Partition 2 of type Linux and of size 512 GiB is set Command (m for help): p Disk /dev/sda: 2000.3 GB, 2000341917696 bytes, 3906917808 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 262144 bytes / 524288 bytes Disk label type: dos Disk identifier: 0x000b9cd2 Device Boot Start End Blocks Id System /dev/sda1 * 2048 1026047 512000 83 Linux /dev/sda2 1026048 1074767871 536870912 83 Linux Command (m for help): w The partition table has been altered! Calling ioctl() to re-read partition table. WARNING: Re-reading the partition table failed with error 16: Device or resource busy. The kernel still uses the old table. The new table will be used at the next reboot or after you run partprobe(8) or kpartx(8) Syncing disks.
- If disk is in use, reboot. Else try partprobe or kpartx.
- Resize PV:
# pvresize /dev/sda2 Physical volume "/dev/sda2" changed 1 physical volume(s) resized / 0 physical volume(s) not resized
- Verify new size:
[root@srv2 ~]# pvs PV VG Fmt Attr PSize PFree /dev/sda2 centos lvm2 a-- 512.00g 230.00g
kvm_grow_pv.txt · Last modified: 2021/10/09 15:14 by 127.0.0.1