Docker存储驱动介绍
Docker supports the following storage drivers:
overlay2
is the preferred storage driver, for all currently supported Linux distributions, and requires no extra configuration.aufs
is the preferred storage driver for Docker 18.06 and older, when running on Ubuntu 14.04 on kernel 3.13 which has no support foroverlay2
.devicemapper
is supported, but requiresdirect-lvm
for production environments, becauseloopback-lvm
, while zero-configuration, has very poor performance.devicemapper
was the recommended storage driver for CentOS and RHEL, as their kernel version did not supportoverlay2
. However, current versions of CentOS and RHEL now have support foroverlay2
, which is now the recommended driver.- The
btrfs
andzfs
storage drivers are used if they are the backing filesystem (the filesystem of the host on which Docker is installed). These filesystems allow for advanced options, such as creating “snapshots”, but require more maintenance and setup. Each of these relies on the backing filesystem being configured correctly. - The
vfs
storage driver is intended for testing purposes, and for situations where no copy-on-write filesystem can be used. Performance of this storage driver is poor, and is not generally recommended for production use.
推荐使用overlay2,但是有些Linux发行版不支持。
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