linux - linux磁盘空间数字未累加

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我意识到这个问题已经被问过很多次了，但是没有一个解决方案可以帮助我理解我的问题。

这是我从df -h获得的输出：

Filesystem                 Size  Used Avail Use% Mounted on
udev                        16G  4.0K   16G   1% /dev
tmpfs                      3.2G  812K  3.2G   1% /run
/dev/disk/by-label/DOROOT  315G  297G  2.4G 100% /
none                       4.0K     0  4.0K   0% /sys/fs/cgroup
none                       5.0M     0  5.0M   0% /run/lock
none                        16G  220K   16G   1% /run/shm
none                       100M   28K  100M   1% /run/user

我不确定为什么/dev/disk/by-label/DOROOT缺少约15G。我用lsof -n | grep -i deleted检查了僵尸文件，一切看起来都很好。

这是我从/sbin/tune2fs -l /dev/disk/by-label/DOROOT获得的输出

tune2fs 1.42.9 (4-Feb-2014)
Filesystem volume name:   DOROOT
Last mounted on:          /
Filesystem UUID:          050e1e34-39e6-4072-a03e-ae0bf90ba13a
Filesystem magic number:  0xEF53
Filesystem revision #:    1 (dynamic)
Filesystem features:      has_journal ext_attr resize_inode dir_index filetype needs_recovery 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:              20971520
Block count:              83885568
Reserved block count:     4194262
Free blocks:              4737249
Free inodes:              20557856
First block:              0
Block size:               4096
Fragment size:            4096
Reserved GDT blocks:      1004
Blocks per group:         32768
Fragments per group:      32768
Inodes per group:         8192
Inode blocks per group:   512
RAID stride:              32639
Flex block group size:    16
Filesystem created:       Thu Apr 17 11:45:13 2014
Last mount time:          Mon Sep 12 07:58:15 2016
Last write time:          Mon Sep 12 07:58:15 2016
Mount count:              37
Maximum mount count:      -1
Last checked:             Wed Feb 17 11:07:11 2016
Check interval:           0 (<none>)
Lifetime writes:          3729 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
First orphan inode:       2621902
Default directory hash:   half_md4
Directory Hash Seed:      ef1fcbab-03ff-497a-881b-3d32da9f753f
Journal backup:           inode blocks

Reserved Block Count似乎也不占用太多空间。

我如何找到/dev/disk/by-label/DOROOT剩余的15个演出在哪里？

最佳答案

Reserved block count:     4194262
Block size:               4096

4096 * 4194262在16 GiB以下。什么是谜？

关于linux - linux磁盘空间数字未累加，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/39450033/

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linux - linux磁盘空间数字未累加