我有一个虚拟的 redhat linux 机器,用于 Docker。显然,我尚未将其正确设置为生产模式,因为我仍在使用 devicemapper 将存储模式作为环回设备运行(1)。最后,我想配置 docker 以使用overlay2
文件系统2。
df
我的问题是我不知道如何解释我的文件系统如何组合在一起的输出。它与安装为/dev/sda1
和 的老式 1-2 硬盘驱动器有很大不同/dev/sda2
。
df
:
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/mapper/rhel-root 18348032 16437056 1910976 90% /
devtmpfs 1913900 0 1913900 0% /dev
tmpfs 1930752 0 1930752 0% /dev/shm
tmpfs 1930752 201648 1729104 11% /run
tmpfs 1930752 0 1930752 0% /sys/fs/cgroup
/dev/sda1 508588 273748 234840 54% /boot
/dev/mapper/rhel-data 31442944 119460 31323484 1% /data
tmpfs 386152 12 386140 1% /run/user/42
tmpfs 386152 0 386152 0% /run/user/982
/dev/dm-4 10475520 196220 10279300 2% /var/lib/docker/devicemapper/mnt/cc19510c0309762e0dbc9f3dfe21900d969f926c6ef04ed7d11b7bdeede89f91
/dev/dm-5 10475520 59804 10415716 1% /var/lib/docker/devicemapper/mnt/5a7a640f1488988864923b943a5c69204fc6f731aedc27400898d3c9c35577ab
shm 65536 0 65536 0% /var/lib/docker/containers/1b3a8d5dac84e7cc9be3956049bb9902f4c56c1af644e7b2bf9572d69b49585f/mounts/shm
shm 65536 0 65536 0% /var/lib/docker/containers/765355272efb9e0ab8aa1fd1a12de59753f44e494713e7e2345820cb2a9d5c31/mounts/shm
tmpfs 386152 0 386152 0% /run/user/959053690
/dev/dm-6 10475520 1947752 8527768 19% /var/lib/docker/devicemapper/mnt/533250fcc6d43b1918fff0062a177848fda9ef9343e3fd0ab01de86bb58bfdc8
shm 65536 0 65536 0% /var/lib/docker/containers/f84698c4831b2771009ad85ccd0cbb82b420d7ac0bcd60edfbbe9556fe360feb/mounts/shm
tmpfs 386152 0 386152 0% /run/user/959055879
我在下面包含了xfs_info
两个文件系统的输出,但不确定其中之一是否是 docker 容器和安装在容器上的卷使用的存储:
$ xfs_info /dev/mapper/rhel-root
meta-data=/dev/mapper/rhel-root isize=256 agcount=5, agsize=1144832 blks
= sectsz=512 attr=2, projid32bit=1
= crc=0 finobt=0 spinodes=0
data = bsize=4096 blocks=4589568, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0 ftype=0
log =internal bsize=4096 blocks=2560, version=2
= sectsz=512 sunit=0 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
$ xfs_info /dev/mapper/rhel-data
meta-data=/dev/mapper/rhel-data isize=256 agcount=7, agsize=1280000 blks
= sectsz=512 attr=2, projid32bit=1
= crc=0 finobt=0 spinodes=0
data = bsize=4096 blocks=7863296, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0 ftype=0
log =internal bsize=4096 blocks=2560, version=2
= sectsz=512 sunit=0 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
有人可以好心地引导我度过这个过程吗?