全磁盘安装时的 LVM 快照

全磁盘安装时的 LVM 快照

在以下情况下是否可以对单个整个磁盘安装进行 LVM 快照?

root@talon1 ~ # lvs  
  LV     VG         Attr       LSize   Pool Origin Data%  Meta%  Move Log Cpy%Sync Convert
  root   xubuntu-vg -wi-ao---- 464.30g                                                    
  swap_1 xubuntu-vg -wi-ao---- 980.00m                                                    
root@talon1 ~ # vgs
  VG         #PV #LV #SN Attr   VSize    VFree
  xubuntu-vg   1   2   0 wz--n- <465.26g    0 
root@talon1 ~ # fdisk -l
Disk /dev/sda: 465.8 GiB, 500107862016 bytes, 976773168 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: gpt
Disk identifier: 36D8E4F9-C29B-4F16-ABBB-1ED3F8168A1B

Device       Start       End   Sectors   Size Type
/dev/sda1     2048   1050623   1048576   512M EFI System
/dev/sda2  1050624 976771071 975720448 465.3G Linux LVM


Disk /dev/mapper/xubuntu--vg-root: 464.3 GiB, 498539167744 bytes, 973709312 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/xubuntu--vg-swap_1: 980 MiB, 1027604480 bytes, 2007040 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

教程,看起来我需要一个单独的分区。

是否还可以动态创建一个 15-16 GB 的小分区并将其用于快照?

答案1

否,除非您向卷组添加另一个磁盘。

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