每个inode多少个字节? [英] How many bytes per inodes?

问题描述

我需要创建非常大的文件(不是很大)(例如4kb，8kb). 在我的计算机上这是不可能的，因为它将所有inode占用高达100％，并且我无法创建更多文件:

I need to create a very high number of files which are not very large (like 4kb,8kb). It's not possible on my computer cause it takes all inodes up to 100% and I cannot create more files :

$ df -i /dev/sda5
Filesystem            Inodes   IUsed   IFree IUse% Mounted on
/dev/sda5            54362112 36381206 17980906   67% /scratch

(我开始删除文件，这就是为什么现在是67％)

(I started deleting files, it's why it's now 67%)

我的文件系统(ext4)上的每个节点的字节数为256

The bytes-per-nodes are of 256 on my filesystem (ext4)

$ sudo tune2fs -l /dev/sda5 | grep Inode
Inode count:              54362112
Inodes per group:         8192
Inode blocks per group:   512
Inode size:               256

我想知道是否有可能将这个值设置得很低，甚至低于128(在重新格式化期间).如果是，我应该使用什么值? 谢谢

I wonder if it's possible to set this value very low even below 128(during reformating). If yes,what value should I use? Thx

推荐答案

每个inode的默认字节通常为16384，这是/etc/mke2fs.conf中的默认inode_ratio(在创建文件系统之前读取).如果您用尽了inode，则可以尝试例如:

The default bytes per inode is usually 16384, which is the default inode_ratio in /etc/mke2fs.conf (it's read prior to filesystem creation). If you're running out of inodes, you might try for example:

mkfs.ext4 -i 8192 /dev/mapper/main-var2

另一个会影响此效果的选项是-T，通常是-T news，它将进一步减小到4096.

Another option that affects this is -T, typically -T news which further reduces it to 4096.

此外，您不能在ext3或ext4文件系统中更改inode的数量，除非重新创建或对其进行十六进制编辑. Reiser文件系统是动态的，因此您永远不会遇到问题.

Also, you can not change the number of inodes in a ext3 or ext4 filesystem without re-creating or hex-editing it. Reiser filesystems are dynamic so you'll never have an issue with them.

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