Question

我有一个LVM分区，其上有一个vg和一个lv。我想增长它（向左增长所以可能不得不移动数据）。我决定和GParted Live一起去。

在调整大小期间，我收到一条消息，说明kernel won't recognize /dev/sda2. you need to reboot的内容。重新启动GParted后，无法识别分区类型并检查lsblk显示该分区已不存在。

[root@antek-pc /]# lsblk                                                                                                                                                                                                               
NAME            MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT                                                                                                                                                                                         
sda               8:0    0 232.9G  0 disk                                                                                                                                                                                                    
├─sda1            8:1    0   108G  0 part                                                                                                                                                                                                    
│ ├─fedora-root 253:0    0    40G  0 lvm  /                                                                                                                                                                                                  
│ ├─fedora-swap 253:1    0     8G  0 lvm  [SWAP]                                                                                                                                                                                             
│ └─fedora-home 253:2    0    40G  0 lvm  /home                                                                                                                                                                                              
└─sda2            8:2    0 124.9G  0 part         

The lv partition under sda2 is missing

我已经尝试过做的事情：

使用/etc/lvm/archive从vgcfgrestore恢复文件。以下是您可以从中提取一些数据的文件：

BEFORE RESIZE

vm {
        id = "gF1hzf-2R45-pgef-TbTj-sRAd-Wj2A-rpPjTn"
        seqno = 3
        format = "lvm2"                 # informational
        status = ["RESIZEABLE", "READ", "WRITE"]
        flags = []
        extent_size = 8192              # 4 Megabytes
        max_lv = 0
        max_pv = 0
        metadata_copies = 0

        physical_volumes {

                pv0 {                                                                                                                                                                                                                        
                        id = "Fdzx3j-t3Dk-26SW-cf29-118Q-W95b-4hL8pN"                                                                                                                                                                        
                        device = "/dev/sda4"    # Hint only                                                                                                                                                                                  

                        status = ["ALLOCATABLE"]                                                                                                                                                                                             
                        flags = []                                                                                                                                                                                                           
                        dev_size = 104187904    # 49.6807 Gigabytes                                                                                                                                                                          
                        pe_start = 2048                                                                                                                                                                                                      
                        pe_count = 12718        # 49.6797 Gigabytes                                                                                                                                                                          
                }                                                                                                                                                                                                                            
        }                                                                                                                                                                                                                                    

        logical_volumes {                                                                                                                                                                                                                    

                win10 {                                                                                                                                                                                                                      
                        id = "xtHhhx-SKQV-MWdx-0saD-N99f-gvtp-DVoyjA"                                                                                                                                                                        
                        status = ["READ", "WRITE", "VISIBLE"]                                                                                                                                                                                
                        flags = []                                                                                                                                                                                                           
                        creation_time = 1515700031      # 2018-01-11 19:47:11 +0000                                                                                                                                                          
                        creation_host = "debian"                                                                                                                                                                                             
                        segment_count = 1                                                                                                                                                                                                    

                        segment1 {                                                                                                                                                                                                           
                                start_extent = 0
                                extent_count = 7680     # 30 Gigabytes

                                type = "striped"
                                stripe_count = 1        # linear

                                stripes = [
                                        "pv0", 0
                                ]
                        }
                }
        }

}

AFTER RESIZE

vm {
        id = "ITbhDj-pcla-lcTd-WGwC-Xs9H-CxTd-OzArde"
        seqno = 0
        format = "lvm2"                 # informational
        status = ["RESIZEABLE", "READ", "WRITE"]
        flags = []
        extent_size = 8192              # 4 Megabytes
        max_lv = 0
        max_pv = 0
        metadata_copies = 0

        physical_volumes {

                pv0 {
                        id = "I2iB5k-lMdO-SB22-UIr2-vTmy-c0IA-S7OdOV"
                        device = "/dev/sda2"    # Hint only

                        status = ["ALLOCATABLE"]
                        flags = []
                        dev_size = 261902336    # 124.885 Gigabytes
                        pe_start = 2048
                        pe_count = 31970        # 124.883 Gigabytes
                }
        }


}

使用vm-win10，pcvreate和vgcreate

lvcreate

我认为问题可能是由GParted仅调整分区大小而不是移动数据引起的，但我不知道如何检查或修复它。

Answer 1

假设您的猜测正确，分区已经增长且LVM没有移动和增长，那么您可以考虑使用TestDisk扫描磁盘表面以建议并应用对分区边界的更改。

请注意，GParted允许保存gparted_details.htm日志文件（并在发生错误时提示保存）。如果您保存了此文件，则该文件将包含恢复原始分区边界所需的所有特定详细信息。

使用GParted增长失败后恢复LVM分区

1 个答案: