我想缩小我的逻辑卷 (LV)
$ df -h
Filesystem Size Used Avail Use% Mounted on
...
/dev/mapper/MyOnlyVolumeGroup-MyLogicVolume 59G 23G 35G 40% /MyData
但即使上面应该有35G空间，当我命令
$ sudo e2fsck -f /dev/mapper/MyOnlyVolumeGroup-MyLogicVolume
e2fsck 1.42.9 (4-Feb-2014)
Pass 1: Checking inodes, blocks, and sizes
Pass 2: Checking directory structure
Pass 3: Checking directory connectivity
Pass 4: Checking reference counts
Pass 5: Checking group summary information
/dev/mapper/MyOnlyVolumeGroup-MyLogicVolume: 258758/3932160 files (0.8% non-contiguous), 6109625/15728640 blocks
然后询问最小尺寸，我得到
$ sudo resize2fs -P /dev/mapper/MyOnlyVolumeGroup-MyLogicVolume
resize2fs 1.42.9 (4-Feb-2014)
Estimated minimum size of the filesystem: 5990176
现在，我不确定这是什么单位。起初，我以为总大小是 59GB，但请注意“5 990 176” - sooo...这是什么意思？
但是，如果我假设这意味着 59GB，则意味着我无法缩小 LV。这与程序 kvpm（用于 LVM 管理的 GUI）所讲述的事实是一致的
文件系统已经尽可能小了
当我试图告诉它“减少逻辑卷”时。根据 kvpm 的说法，正如df -h所说的那样，空间是可用的。另外，我的文件管理器告诉我有可用空间。
那么为什么我会从resize2fskvpm 收到此消息以及我可以做什么来缩小 LV？
附加信息：
$ sudo tune2fs -l /dev/mapper/MyOnlyVolumeGroup-MyLogicVolume
tune2fs 1.42.9 (4-Feb-2014)
Filesystem volume name: <none>
Last mounted on: /MyData
Filesystem UUID: 3a478ae0-2736-414d-b98d-e23195a616e6
Filesystem magic number: 0xEF53
Filesystem revision #: 1 (dynamic)
Filesystem features: has_journal ext_attr resize_inode dir_index filetype extent flex_bg sparse_super large_file huge_file uninit_bg dir_nlink extra_isize
Filesystem flags: signed_directory_hash
Default mount options: user_xattr acl
Filesystem state: clean
Errors behavior: Continue
Filesystem OS type: Linux
Inode count: 3932160
Block count: 15728640
Reserved block count: 637401
Free blocks: 9619015
Free inodes: 3673402
First block: 0
Block size: 4096
Fragment size: 4096
Reserved GDT blocks: 316
Blocks per group: 32768
Fragments per group: 32768
Inodes per group: 8192
Inode blocks per group: 512
RAID stride: 2957
Flex block group size: 16
Filesystem created: Sun Mar 15 18:11:11 2015
Last mount time: Tue Nov 24 17:58:59 2020
Last write time: Tue Nov 24 18:01:46 2020
Mount count: 0
Maximum mount count: -1
Last checked: Tue Nov 24 18:01:46 2020
Check interval: 0 (<none>)
Lifetime writes: 5461 GB
Reserved blocks uid: 0 (user root)
Reserved blocks gid: 0 (group root)
First inode: 11
Inode size: 256
Required extra isize: 28
Desired extra isize: 28
Journal inode: 8
Default directory hash: half_md4
Directory Hash Seed: d19dddab-633a-4f89-a5b9-6ba7e364d385
Journal backup: inode blocks