我正在尝试使用“growpart”在使用 LVM 的虚拟机上扩展分区。该命令报告成功，并且似乎输出了正确的更改。但是，运行后什么也没发生，即使重新启动后分区也没有改变。
我正在尝试将 /dev/sda 上的分区 5（lvm）从当前的 32g 扩展到 42g
$ lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 42G 0 disk
├─sda1 8:1 0 487M 0 part /boot
├─sda2 8:2 0 1K 0 part
└─sda5 8:5 0 31.5G 0 part
├─debian--vg-root 254:0 0 30.5G 0 lvm /
└─debian--vg-swap_1 254:1 0 976M 0 lvm [SWAP]
sr0 11:0 1 1024M 0 rom
$ fdisk -l
Disk /dev/sda: 42 GiB, 45097156608 bytes, 88080384 sectors
Disk model: QEMU HARDDISK
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: 0x3991920e
Device Boot Start End Sectors Size Id Type
/dev/sda1 * 2048 999423 997376 487M 83 Linux
/dev/sda2 1001470 67106815 66105346 31.5G 5 Extended
/dev/sda5 1001472 67106815 66105344 31.5G 8e Linux LVM
Disk /dev/mapper/debian--vg-root: 30.5 GiB, 32774291456 bytes, 64012288 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
Disk /dev/mapper/debian--vg-swap_1: 976 MiB, 1023410176 bytes, 1998848 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
现在，使用 growpart 试运行并扩大分区，您可以看到分区 5 上的结束块66105344从变为87078879
$ sudo growpart -N /dev/sda 5
CHANGE: partition=5 start=1001472 old: size=66105344 end=67106816 new: size=87078879,end=88080351
# === old sfdisk -d ===
label: dos
label-id: 0x3991920e
device: /dev/sda
unit: sectors
/dev/sda1 : start= 2048, size= 997376, type=83, bootable
/dev/sda2 : start= 1001470, size= 66105346, type=5
/dev/sda5 : start= 1001472, size= 66105344, type=8e
# === new sfdisk -d ===
label: dos
label-id: 0x3991920e
device: /dev/sda
unit: sectors
/dev/sda1 : start= 2048, size= 997376, type=83, bootable
/dev/sda2 : start= 1001470, size= 66105346, type=5
/dev/sda5 : start= 1001472, size= 87078879, type=8e
$ sudo growpart /dev/sda 5
CHANGED: partition=5 start=1001472 old: size=66105344 end=67106816 new: size=87078879,end=88080351
现在我希望 lsblk 能够显示扩展大小，但什么都没有改变。说实话，我不确定发生了什么，重启后也是一样
$ lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 42G 0 disk
├─sda1 8:1 0 487M 0 part /boot
├─sda2 8:2 0 1K 0 part
└─sda5 8:5 0 31.5G 0 part
├─debian--vg-root 254:0 0 30.5G 0 lvm /
└─debian--vg-swap_1 254:1 0 976M 0 lvm [SWAP]
sr0
答案1
这个过程与上面提到的完全一样。先扩大扩展分区，然后再扩大子分区。之后，您就可以照常进行操作了。
扩展两个部分 -> 扩展 -> 子部分：
# grow the extended part
$ sudo growpart /dev/sda 2
CHANGED: partition=2 start=1001470 old: size=66105346 end=67106816 new: size=87078881,end=88080351
# now grow the child part
$ sudo growpart /dev/sda 5
CHANGED: partition=5 start=1001472 old: size=66105344 end=67106816 new: size=87078879,end=88080351
然后扩展物理卷：
$ sudo pvresize /dev/sda5
现在逻辑卷：
$ sudo lvextend -l +100%FREE /dev/debian-vg/root
最后部分是文件系统：
$ sudo resize2fs /dev/debian-vg/root
# now you will finally see it under `df` and is usable by the filesystem without restart
$ df -h
Filesystem Size Used Avail Use% Mounted on
udev 9.8G 0 9.8G 0% /dev
tmpfs 2.0G 17M 2.0G 1% /run
/dev/mapper/debian--vg-root 40G 17G 21G 45% /
tmpfs 9.9G 0 9.9G 0% /dev/shm
tmpfs 5.0M 0 5.0M 0% /run/lock
tmpfs 9.9G 0 9.9G 0% /sys/fs/cgroup
/dev/sda1 470M 83M 363M 19% /boot
tmpfs 2.0G 0 2.0G 0% /run/user/0
tmpfs 2.0G 0 2.0G 0% /run/user/1002
tmpfs 2.0G 0 2.0G 0% /run/user/1000