如何在 Linux 中设置目录大小限制？

How to set limit on directory size in Linux?

提问by user710818

I have read about limiting size of directory - like creating big files, formatting,mount,.. etc. But this all very complicated. Does exist utility or something else to set limit on already existing directory?

我已经阅读了限制目录大小的内容——比如创建大文件、格式​​化、挂载等。但这一切都非常复杂。是否存在实用程序或其他东西来设置对现有目录的限制？

采纳答案by Sergei Nikulov

Quota is based upon filesystems, but you can always create a virtual filesystem and mount it on a specific (empty) directory with the usrquota and/or grpquota flags.

配额基于文件系统，但您始终可以创建一个虚拟文件系统，并将其挂载到具有 usrquota 和/或 grpquota 标志的特定（空）目录中。

In steps this will be:

在步骤中，这将是：

1. create the mount point
2. create a file full of /dev/zero, large enough to the maximum size you want to reserve for the virtual filesystem
3. format this file with an ext3 filesystem (you can format a disk space even if it is not a block device, but double check the syntax of every - dangerous - formatting command)
4. mount the newly formatted disk space in the directory you've created as mount point, e.g. Code: mount -o loop,rw,usrquota,grpquota /path/to/the/formatted/disk/space /path/of/mount/point
5. Set proper permissions
6. Set quotas and the trick is done.

1. 创建挂载点
2. 创建一个充满 /dev/zero 的文件，该文件足够大到您希望为虚拟文件系统保留的最大大小
3. 使用 ext3 文件系统格式化此文件（即使它不是块设备，您也可以格式化磁盘空间，但请仔细检查每个 - 危险 - 格式化命令的语法）
4. 在您创建的目录中挂载新格式化的磁盘空间作为挂载点，例如代码： mount -o loop,rw,usrquota,grpquota /path/to/the/formatted/disk/space /path/of/mount/point
5. 设置适当的权限
6. 设置配额，诀窍就完成了。

Tutorial here. Original answer here

教程在这里。原答案在这里

回答by Basile Starynkevitch

You could limit the quotaon a filesystem. But it is not directory specific, but file system & user specific.

您可以限制文件系统上的配额。但它不是特定于目录的，而是特定于文件系统和用户的。

You might also consider developping your own user space file system using FUSE, but this will take your time.

您也可以考虑使用FUSE开发您自己的用户空间文件系统，但这需要您的时间。