redhat – mv：磁盘空间不足但可以cp

我们有一个奇怪的行为,我们不能再将文件移动到某个目录.我们明白了

lstat("NewBatches/R910140805849312.dat",{st_mode=S_IFREG|0644,st_size=2850,...}) = 0
lstat("Imported/R910140805849312.dat",0x7fff10424b90) = -1 ENOENT (No such file or directory)
rename("NewBatches/R910140805849312.dat","Imported/R910140805849312.dat") = -1 ENOSPC (No space left on device)

但我们可以将文件复制到文件夹中.剩下大量的磁盘空间和inode.我们无法在该Imported子目录中移动该文件.所有其他人都在同一个EXT3文件系统中工作.

我有点不解

# tune2fs -l /dev/mapper/vgdmscsp-lvmaspdoc
tune2fs 1.39 (29-May-2006)
Filesystem volume name:   <none>
Last mounted on:          <not available>
Filesystem UUID:          b4215e24-2285-46de-8398-f41bc3174b8e
Filesystem magic number:  0xEF53
Filesystem revision #:    1 (dynamic)
Filesystem features:      has_journal resize_inode dir_index filetype needs_recovery sparse_super
Default mount options:    (none)
Filesystem state:         clean
Errors behavior:          Continue
Filesystem OS type:       Linux
Inode count:              33382400
Block count:              52428800
Reserved block count:     2619904
Free blocks:              5432592
Free inodes:              17432375
First block:              1
Block size:               1024
Fragment size:            1024
Reserved GDT blocks:      176
Blocks per group:         8192
Fragments per group:      8192
Inodes per group:         5216
Inode blocks per group:   652
Filesystem created:       Thu Oct  6 11:19:53 2011
Last mount time:          Sat Jul 12 09:26:56 2014
Last write time:          Tue Aug  5 00:04:31 2014
Mount count:              40
Maximum mount count:      -1
Last checked:             Thu Oct  6 11:19:53 2011
Check interval:           0 (<none>)
Reserved blocks uid:      0 (user root)
Reserved blocks gid:      0 (group root)
First inode:              11
Inode size:               128
Journal inode:            8
Default directory hash:   tea
Directory Hash Seed:      b975b5a1-72ad-44a4-8c53-622f7ba71e25
Journal backup:           inode blocks

解决方法

您的空闲块数与保留计数相差不远.

Block count:              52428800
Reserved block count:     2619904
Free blocks:              5432592

在创建时,ext3文件系统保留一定百分比的块供root用户使用,默认情况下为5％.这允许root拥有的进程在锁定用户空间的同时继续写入磁盘,而人们希望这是磁盘膨胀的来源.

我怀疑你作为一个没有特权的用户遇到了这个问题,而空闲块的数量低于保留计数.如果你以root身份进行干预,那么cp就会成功.如果您现在可以确认问题已经消失,并且当前空闲块数超过了保留计数,那么这是最可能的原因.

原文地址：https://www.jb51.cc/linux/395677.html