------ fs:
source: /proc
target: /proc
fstype: proc
optstr: rw,relatime
VFS-optstr: rw,relatime
FS-opstr: rw
root:   /
id:     15
parent: 20
devno:  0:3
------ fs:
source: /sys
target: /sys
fstype: sysfs
optstr: rw,relatime
VFS-optstr: rw,relatime
FS-opstr: rw
root:   /
id:     16
parent: 20
devno:  0:15
------ fs:
source: udev
target: /dev
fstype: devtmpfs
optstr: rw,relatime,size=1983516k,nr_inodes=495879,mode=755
VFS-optstr: rw,relatime
FS-opstr: rw,size=1983516k,nr_inodes=495879,mode=755
root:   /
id:     17
parent: 20
devno:  0:5
------ fs:
source: devpts
target: /dev/pts
fstype: devpts
optstr: rw,relatime,gid=5,mode=620,ptmxmode=000
VFS-optstr: rw,relatime
FS-opstr: rw,gid=5,mode=620,ptmxmode=000
root:   /
id:     18
parent: 17
devno:  0:10
------ fs:
source: tmpfs
target: /dev/shm
fstype: tmpfs
optstr: rw,relatime
VFS-optstr: rw,relatime
FS-opstr: rw
root:   /
id:     19
parent: 17
devno:  0:16
------ fs:
source: /dev/sda4
target: /
fstype: ext3
optstr: rw,noatime,errors=continue,user_xattr,acl,barrier=0,data=ordered
VFS-optstr: rw,noatime
FS-opstr: rw,errors=continue,user_xattr,acl,barrier=0,data=ordered
root:   /
id:     20
parent: 1
devno:  8:4
------ fs:
source: 
target: /mnt/test
fstype: tmpfs
optstr: rw,relatime
VFS-optstr: rw,relatime
FS-opstr: rw
optional-fields: 'shared:212'
root:   /
id:     21
parent: 20
devno:  0:53