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LVM 挂载救援模式

tag-icon • tag-icon mount lvm rescue
LVM 挂载救援模式

我在安装 LVM 来提取 Proxmox 虚拟机数据时遇到问题。关于如何安装它有什么想法吗？

root@rescue:~# mount /dev/sdd /mnt/
mount: block device /dev/sdd is write-protected, mounting read-only
NTFS signature is missing.
Failed to mount '/dev/sdd': Invalid argument
The device '/dev/sdd' doesn't seem to have a valid NTFS.
Maybe the wrong device is used? Or the whole disk instead of a
partition (e.g. /dev/sda, not /dev/sda1)? Or the other way around?
root@rescue:~# mount /dev/sdd1 /mnt/
mount: unknown filesystem type 'linux_raid_member'
root@rescue:~#

磁盘信息

root@rescue:~# fdisk -l

Disk /dev/sda: 240.1 GB, 240057409536 bytes
255 heads, 63 sectors/track, 29185 cylinders, total 468862128 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x000bf890

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *        4096    40962047    20478976   83  Linux
/dev/sda2        40962048    43057151     1047552   82  Linux swap / Solaris
/dev/sda3        43057152   468854783   212898816    f  W95 Ext'd (LBA)
/dev/sda5        43059200   468854783   212897792   8e  Linux LVM

Disk /dev/sdc: 2000.4 GB, 2000398934016 bytes
81 heads, 63 sectors/track, 765633 cylinders, total 3907029168 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 identifier: 0x35f0e73a

   Device Boot      Start         End      Blocks   Id  System
/dev/sdc1            2048  3907029167  1953513560   8e  Linux LVM

Disk /dev/sdd: 2000.4 GB, 2000398934016 bytes
81 heads, 63 sectors/track, 765633 cylinders, total 3907029168 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 identifier: 0x43bc6360

   Device Boot      Start         End      Blocks   Id  System
/dev/sdd1            2048  3907029167  1953513560   8e  Linux LVM

Disk /dev/sdb: 240.1 GB, 240057409536 bytes
81 heads, 63 sectors/track, 91879 cylinders, total 468862128 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0xf95db8ab

   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1            2048   468862127   234430040   8e  Linux LVM

Disk /dev/mapper/pve-data: 453.8 GB, 453760778240 bytes
255 heads, 63 sectors/track, 55166 cylinders, total 886251520 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00000000

Disk /dev/mapper/pve-data doesn't contain a valid partition table
root@rescue:~#

在此输入图像描述

答案1

该分区的类型为“Linux LVM”，因此它可能是一个 LVM 物理卷。用于file -s /dev/sdd1检查。

运行该命令pvs可查看系统上可用的物理卷的摘要，或pvdisplay查看更详细的信息。如果您认为某些物理卷存在但未检测到，请运行pvscan扫描所有连接的磁盘以查找潜在的 LVM 卷。

在VG输出列中pvs，您可以看到物理卷所属的卷组。如果卷组分布在多个物理卷上，则所有物理卷都需要存在（RAID 适当配置除外）。运行vgs以查看可用卷组的摘要，或vgdisplay查看更详细的信息。

LVM 区域的内容是通过逻辑卷访问的。运行lvs以查看可用卷组的摘要，或lvdisplay查看更详细的信息。为了访问逻辑卷，它必须处于活动状态，并在“Attr”列中lvs报告。a如果卷尚未自动激活，请使用其中是卷组名称和是逻辑卷名称来执行此操作。您还可以用来激活组中的所有逻辑卷。lvchange -ay mygroup/myvolumemygroupmyvolumevgchange -ay mygroup

要安装活动逻辑卷，请通过其设备路径（即或 ）引用它。/dev/mapper/mygroup-myvolume/dev/mygroup/myvolume

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