调整扩展分区lvm的大小

调整扩展分区lvm的大小

这是我的磁盘架构,来自lsblklvs。我想要做的是将sda5其类型调整Extended为块设备的大小/dev/sda(100GB)

   NAME             MAJ:MIN           RM      SIZE   RO    TYPE    MOUNTPOINT                              
sda              8:0               0       100G   0     disk                                            
|-sda1           8:1               0       243M   0     part    /boot                                   
|-sda2           8:2               0       1K     0     part                                            
`-sda5           8:5               0       49.8G  0     part                                            
|-osiris-root    254:0             0       45.8G  0     lvm     /                                       
`-osiris-swap_1  254:1             0       4G     0     lvm     [SWAP]                                  
sr0              11:0              1       1024M  0     rom                                             
LV               VG                Attr    LSize  Pool  Origin  Data%       Meta%  Move  Log  Cpy%Sync  Convert
root             osiris-wi-ao----  45.76g                                                               
swap_1           osiris-wi-ao----  4.00g   

有没有办法使用 或任何其他工具来做到这parted一点fdisk?提前致谢。

fdisk -l /dev/sda*输出

Disk /dev/sda: 100 GiB, 107374182400 bytes, 209715200 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: dos 
Disk identifier: 0x00082e2b

Device Boot Start End Sectors Size Id Type 
/dev/sda1 * 2048 499711 497664 243M 83 Linux 
/dev/sda2 501758 104855551 104353794 49.8G 5 Extended 
/dev/sda5 501760 104855551 104353792 49.8G 8e Linux LVM

Disk /dev/sda1: 243 MiB, 254803968 bytes, 497664 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/sda2: 1 KiB, 1024 bytes, 2 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: dos 
Disk identifier: 0x00000000

Device Boot Start End Sectors Size Id Type 
/dev/sda2p1 2 104353793 104353792 49.8G 8e Linux LVM

Disk /dev/sda5: 49.8 GiB, 53429141504 bytes, 104353792 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

答案1

要扩展您的sda5,您也需要扩展它的容器sda2。使用命令行工具,最简单的方法是使用sfdisk

sfdisk /dev/sda

这将打印当前的分区表,它应该与您在中看到的内容匹配fdisk

Disk image: 100 GiB, 107374182400 bytes, 209715200 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: dos
Disk identifier: 0xe59ec859

Old situation:

Device     Boot  Start       End   Sectors  Size Id Type
image1     *      2048    499711    497664  243M 83 Linux
image2          501758 104855551 104353794 49.8G  5 Extended
image5          501760 104855551 104353792 49.8G 83 Linux

Type 'help' to get more information.

>>>提示符下,开始重新定义所有分区:

2048,497664,83,*

(这是第一个分区:起始扇区、扇区长度、类型和*使其可引导的 a)。sfdisk将回应

Created a new DOS disklabel with disk identifier 0x03408377.
Created a new partition 1 of type 'Linux' and of size 243 MiB.
      image1 :         2048       499711 (243M) Linux

并提示image2( sda2)。进入

501758,,5

它指示sfdisk从扇区 501758 开始创建一个扩展分区,并占据此后的所有可用空间;sfdisk将输出

Created a new partition 2 of type 'Extended' and of size 99.8 GiB.
      image2 :       501758    209715199 (99.8G) Extended

对于image3,只需输入

501760

sfdisk然后会输出

Created a new partition 5 of type 'Linux' and of size 99.8 GiB.
      image5 :       501760    209715199 (99.8G) Linux

并提示image6,我们不需要,所以输入

quit

这将导致sfdisk打印新的分区表并询问您是否要将其写入磁盘:

New situation:

Device     Boot  Start       End   Sectors  Size Id Type
image1     *      2048    499711    497664  243M 83 Linux
image2          501758 209715199 209213442 99.8G  5 Extended
image5          501760 209715199 209213440 99.8G 83 Linux

Do you want to write this to disk? [Y]es/[N]o: 

如果您确信起始扇区全部匹配并且sda1仍然正常,请按Y写入分区表并返回 shell。

完成后,运行

pvresize /dev/sda5

调整 LVM PV 的大小;然后,您应该能够使用新分配的磁盘空间(在新 LV 中,或扩展现有 LV)。

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