KVM увеличить диск
Материал из smolhosting
Выключаем виртуальную машину.
virsh shutdown kvm2
Проверяем, что она действительно выключена.
# virsh list Id Name State ----------------------------------------------------
Увеличиваем размер диска.
cd /vm qemu-img resize kvm2.qcow2 +80GB
Включаем виртуальную машину.
virsh start kvm2
Заходим по SSH и увеличиваем partition size.
Запускаем fdisk и смотрим разделы.
# fdisk /dev/vda Welcome to fdisk (util-linux 2.25.2). Changes will remain in memory only, until you decide to write them. Be careful before using the write command. Command (m for help): p Disk /dev/vda: 100 GiB, 107374182400 bytes, 209715200 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disklabel type: dos Disk identifier: 0x00036fc3 Device Boot Start End Sectors Size Id Type /dev/vda1 * 2048 499711 497664 243M 83 Linux /dev/vda2 501758 41940991 41439234 19.8G 5 Extended /dev/vda5 501760 41940991 41439232 19.8G 8e Linux LVM
Удаляем второй и пятый раздел.
Command (m for help): d Partition number (1,2,5, default 5): 5 Partition 5 has been deleted. Command (m for help): d Partition number (1,2, default 2): 2 Partition 2 has been deleted.
Создаем разделы.
Command (m for help): n
Partition type
p primary (1 primary, 0 extended, 3 free)
e extended (container for logical partitions)
Select (default p): e
Partition number (2-4, default 2): 2
First sector (499712-209715199, default 499712):
Last sector, +sectors or +size{K,M,G,T,P} (499712-209715199, default 209715199):
Created a new partition 2 of type 'Extended' and of size 99.8 GiB.
Command (m for help): n
Partition type
p primary (1 primary, 1 extended, 2 free)
l logical (numbered from 5)
Select (default p): l
Adding logical partition 5
First sector (501760-209715199, default 501760):
Last sector, +sectors or +size{K,M,G,T,P} (501760-209715199, default 209715199):
Created a new partition 5 of type 'Linux' and of size 99.8 GiB.
Поменяем тип у пятого раздела.
Command (m for help): t Partition number (1,2,5, default 5): 5 Hex code (type L to list all codes): 8e Changed type of partition 'Linux' to 'Linux LVM'.
Проверим.
Command (m for help): p Disk /dev/vda: 100 GiB, 107374182400 bytes, 209715200 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disklabel type: dos Disk identifier: 0x00036fc3 Device Boot Start End Sectors Size Id Type /dev/vda1 * 2048 499711 497664 243M 83 Linux /dev/vda2 499712 209715199 209215488 99.8G 5 Extended /dev/vda5 501760 209715199 209213440 99.8G 8e Linux LVM
Запишем изменения и выйдем из fdisk.
Command (m for help): w The partition table has been altered. Calling ioctl() to re-read partition table. Re-reading the partition table failed.: 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).
Чтобы изменения вступили в силу - нужно перезагрузиться.
shutdown -r now
А можно и не перезагружаться.
apt-get install parted partprobe
Сделаем resize the physical volume
# pvresize /dev/vda5 Physical volume "/dev/vda5" changed 1 physical volume(s) resized / 0 physical volume(s) not resized
Увеличиваем раздел lvm раздела.
# lvextend -l +100%FREE /dev/p2pool/root Size of logical volume p2pool/root changed from 18.91 GiB (4840 extents) to 98.91 GiB (25320 extents). Logical volume root successfully resized
Проверяем.
# lvs LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert root p2pool -wi-ao---- 98.91g swap_1 p2pool -wi-ao---- 872.00m
Осталось сделать resize
# resize2fs /dev/p2pool/root resize2fs 1.42.12 (29-Aug-2014) Filesystem at /dev/p2pool/root is mounted on /; on-line resizing required old_desc_blocks = 2, new_desc_blocks = 7 The filesystem on /dev/p2pool/root is now 25927680 (4k) blocks long.
Готово.
# df -h Filesystem Size Used Avail Use% Mounted on /dev/mapper/p2pool-root 98G 7.4G 86G 8% / udev 10M 0 10M 0% /dev tmpfs 397M 248K 397M 1% /run tmpfs 5.0M 0 5.0M 0% /run/lock tmpfs 793M 0 793M 0% /run/shm /dev/vda1 232M 48M 172M 22% /boot tmpfs 793M 0 793M 0% /tmp
