我已经在CentOS7上configuration了LVM，正如这里所解释的那样。
这是docker信息 。
Containers: 3 Running: 1 Paused: 0 Stopped: 2 Images: 1 Server Version: 1.12.6 Storage Driver: devicemapper Pool Name: docker-252:1-50332414-pool Pool Blocksize: 65.54 kB Base Device Size: 10.74 GB Backing Filesystem: xfs Data file: /dev/direct-lvm/docker-data Metadata file: /dev/direct-lvm/docker-metadata Data Space Used: 13.58 GB Data Space Total: 306 GB Data Space Available: 292.4 GB Metadata Space Used: 13.55 MB Metadata Space Total: 16.1 GB Metadata Space Available: 16.09 GB Thin Pool Minimum Free Space: 30.6 GB Udev Sync Supported: true Deferred Removal Enabled: false Deferred Deletion Enabled: false Deferred Deleted Device Count: 0 Library Version: 1.02.135-RHEL7 (2016-11-16) Logging Driver: journald Cgroup Driver: systemd Plugins: Volume: local Network: bridge null overlay host Swarm: inactive Runtimes: runc docker-runc Default Runtime: docker-runc Security Options: seccomp selinux Kernel Version: 3.10.0-514.26.1.el7.x86_64 Operating System: CentOS Linux 7 (Core) OSType: linux Architecture: x86_64 Number of Docker Hooks: 2 CPUs: 4 Total Memory: 7.797 GiB ID: ECMM:WTL7:H5BZ:ITHT:HPXP:AHHY:XHGV:FC7A:DVBT:GDZ7:3ZXG:B6CA Docker Root Dir: /var/lib/docker Debug Mode (client): false Debug Mode (server): false Registry: https://index.docker.io/v1/ WARNING: bridge-nf-call-iptables is disabled WARNING: bridge-nf-call-ip6tables is disabled Insecure Registries: 127.0.0.0/8 Registries: docker.io (secure) 你可以从上面看到，数据文件path是/dev/direct-lvm/docker-data
但是这些卷不是在LVM上创build的。 docker数据不是docker数据的一部分吗？ 可以托pipe在LVMpath上吗？
# du -ksh /var/lib/docker/volumes/* | sort -nr | head 226M /var/lib/docker/volumes/f8c11674f9c81c51811a5c9244a2b2610137814bdc93290451beda867847933a 33G /var/lib/docker/volumes/aecfd2669034914a976d7f34704e4d1eca50fee0a5103a10f1122092495f8a25 32K /var/lib/docker/volumes/metadata.db 0 /var/lib/docker/volumes/eae12270df37256d0a083773e03d3343d53145bf8517525d744eb7a85176b918 0 /var/lib/docker/volumes/a74e9160ff8c1e3ca096079eef81ed097ee938fcfda84832680d5ed29e016128 0 /var/lib/docker/volumes/69bf07eee89d274359cfe0acef50174515762d2aae05816bcb56a92f9001370c 0 /var/lib/docker/volumes/63c897de96d8364e46c3f0004226983da3cd35010a0e3306ea17c578e71ba171 0 /var/lib/docker/volumes/0aee5043332c1b477ff90fb2fea17508f7245feca1b62744ffae09f80b2e3b14 0 /var/lib/docker/volumes/011a20e68e9a0e267e508667cc23d65cb59ada654217c4129722886c95eb8d26