기본 파티션을 확장자로 덮어쓰는 fdisk에서 가상 머신을 복원합니다.

CentOS7 가상 머신이 있습니다.

파티션 크기를 조정하기 위해 삭제하는 동안 fdisk /dev/sda기본 파티션을 삭제하고 다시 생성하는 동안 기본 파티션 대신 확장 파티션을 선택했습니다. 변경사항이 저장되고 다시 시작되었습니다.

모든 작업은 아래와 같으며, 시스템이 시작되면 콘솔에 다음과 같은 내용이 표시됩니다.

시스템을 다시 부팅 가능하게 만들고 무슨 일이 일어나고 있는지 더 잘 이해할 수 있는 방법을 찾고 있습니다.

1. 콘솔 출력:

[ OK ] Started Show Plymouth Boot Screen.
[ OK ] Reached target Paths.
[ OK ] Started Forward Password Requests to Plymouth Directory Watch.
[ OK ] Reached Target Basic System.

....
dracut-initqueueu[262] Warning: dracut-initqueueu timeout - starting timeout scripts
....

Starting Dracut Emergency Shell...
Warning /dev/mapper/rootvg-rootlv does not exist
Warning /dev/rootvg/rootlv does not exist

2. 가상 머신에서 수행된 작업으로 인해 가상 머신이 시작되지 않습니다.

[root@Server ~]# lsblk
NAME              MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
sda                 8:0    0   25G  0 disk
├─sda1              8:1    0    1G  0 part /boot
├─sda2              8:2    0    1G  0 part
│ └─swapvg-swaplv 253:1    0    1G  0 lvm  [SWAP]
└─sda3              8:3    0   23G  0 part
  └─rootvg-rootlv 253:0    0   23G  0 lvm  /
sr0                11:0    1 1024M  0 rom
[root@Server ~]# 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): p

Disk /dev/sda: 26.8 GB, 26843545600 bytes, 52428800 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 label type: dos
Disk identifier: 0x000ea6ab

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *        2048     2099199     1048576   83  Linux
/dev/sda2         2099200     4202495     1051648   8e  Linux LVM
/dev/sda3         4202496    52428799    24113152   8e  Linux LVM

Command (m for help): d
Partition number (1-3, default 3):
Partition 3 is deleted

Command (m for help): n
Partition type:
   p   primary (2 primary, 0 extended, 2 free)
   e   extended
Select (default p): e
Partition number (3,4, default 3):
First sector (4202496-52428799, default 4202496):
Using default value 4202496
Last sector, +sectors or +size{K,M,G} (4202496-52428799, default 52428799):
Using default value 52428799
Partition 3 of type Extended and of size 23 GiB is set

Command (m for help): t
Partition number (1-3, default 3):
Hex code (type L to list all codes): 8e

You cannot change a partition into an extended one or vice versa.
Delete it first.

Type of partition 3 is unchanged: Extended

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.
[root@Server ~]# reboot