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A snap is a squashfs file carrying content and a bit of metadata that tells the system how to manipulate it. When installed the squashfs file is mounted read-only under

/snap/<snap name>/<revision>/

The loop device is a block device that maps its data blocks not to a
physical device such as a hard disk or optical disk drive, but to the
blocks of a regular file in a filesystem or to another block device.
This can be useful for example to provide a block device for a
filesystem image stored in a file, so that it can be mounted with the
mount(8) command.

astolia 写了：不知道snap的机制就去读文档啊
https://docs.snapcraft.io/snaps/metadata

A snap is a squashfs file carrying content and a bit of metadata that tells the system how to manipulate it. When installed the squashfs file is mounted read-only under

/snap/<snap name>/<revision>/

反正都是只读的squashfs，不留任何剩余空间不是很正常吗

还是说你不知道/dev/loop是做什么用的？
http://man7.org/linux/man-pages/man4/lo ... [quote]The loop device is a block device that maps its data blocks not to a
physical device such as a hard disk or optical disk drive, but to the
blocks of a regular file in a filesystem or to another block device.
This can be useful for example to provide a block device for a
filesystem image stored in a file, so that it can be mounted with the
mount(8) command.

[/quote]
以前好像没snap这玩意，也没这么多/dev/loop的。。。我最早用的是11.04。。。最近装了18.04.。。

枫叶饭团 写了：snap每个软件就会搞一个loop文件做只读挂载？这么智障？

wy569332036@163.com 写了： ↑2020-06-02 22:58 我也是。16.04系统，格式化了u盘之后，就跑出来这个鬼玩意，卸载了，开机又填满了。好烦，哪位兄弟怎么彻底干掉他们吗