vue-element-template 登入認證授權改造
阿新 • • 發佈：2020-12-01
https://www.junmajinlong.com/virtual/namespace/mount_namespace/
root@cloud:~# ls -1 /proc/$$/mount* /proc/3374/mountinfo /proc/3374/mounts /proc/3374/mountstats root@cloud:~# mkdir iso root@cloud:~# cd iso/ root@cloud:~/iso# ls root@cloud:~/iso# mkdir -p iso1/dir root@cloud:~/iso# mkdir -p iso2/dir2 root@cloud:~/iso# ls iso1 iso2 root@cloud:~/iso# ls iso1 dir
root@cloud:~/iso# mkisofs -o 1.iso iso1 I: -input-charset not specified, using utf-8 (detected in locale settings) Total translation table size: 0 Total rockridge attributes bytes: 0 Total directory bytes: 2152 Path table size(bytes): 22 Max brk space used 0 175 extents written (0 MB) root@cloud:~/iso# ls 1.iso iso1 iso2 root@cloud:~/iso# mkisofs -o 2.iso iso2 I: -input-charset not specified, using utf-8 (detected in locale settings) Total translation table size: 0 Total rockridge attributes bytes: 0 Total directory bytes: 2154 Path table size(bytes): 22 Max brk space used 0 175 extents written (0MB) root@cloud:~/iso# ls 1.iso 2.iso iso1 iso2 root@cloud:~/iso#
root@cloud:~/iso# ls -1 /proc/$$/mount* /proc/3374/mountinfo /proc/3374/mounts /proc/3374/mountstats root@cloud:~/iso# ls -l /proc/$$/ns/mnt lrwxrwxrwx 1 root root 0 Dec 4 10:27 /proc/3374/ns/mnt -> 'mnt:[4026531840]' root@cloud:~/iso#
root@cloud:~/iso# ls -1 /proc/$$/mount* /proc/3374/mountinfo /proc/3374/mounts /proc/3374/mountstats root@cloud:~/iso# ls -l /proc/$$/ns/mnt lrwxrwxrwx 1 root root 0 Dec 4 10:27 /proc/3374/ns/mnt -> 'mnt:[4026531840]' root@cloud:~/iso# mount 1.iso /mnt/iso1 mount: /mnt/iso1: WARNING: device write-protected, mounted read-only. root@cloud:~/iso# mount | grep iso1 /root/iso/1.iso on /mnt/iso1 type iso9660 (ro,relatime,nojoliet,check=s,map=n,blocksize=2048) root@cloud:~/iso# unshare -m -u /bin/bash root@cloud:~/iso# ls -l /proc/$$/ns total 0 lrwxrwxrwx 1 root root 0 Dec 4 10:29 cgroup -> 'cgroup:[4026531835]' lrwxrwxrwx 1 root root 0 Dec 4 10:29 ipc -> 'ipc:[4026531839]' lrwxrwxrwx 1 root root 0 Dec 4 10:29 mnt -> 'mnt:[4026533784]' lrwxrwxrwx 1 root root 0 Dec 4 10:29 net -> 'net:[4026531896]' lrwxrwxrwx 1 root root 0 Dec 4 10:29 pid -> 'pid:[4026531836]' lrwxrwxrwx 1 root root 0 Dec 4 10:29 pid_for_children -> 'pid:[4026531836]' lrwxrwxrwx 1 root root 0 Dec 4 10:29 user -> 'user:[4026531837]' lrwxrwxrwx 1 root root 0 Dec 4 10:29 uts -> 'uts:[4026533786]' root@cloud:~/iso#
root@cloud:~/iso# mount 2.iso /mnt/iso2/ mount: /mnt/iso2: WARNING: device write-protected, mounted read-only. root@cloud:~/iso# mount | grep 'iso[12]' /root/iso/1.iso on /mnt/iso1 type iso9660 (ro,relatime,nojoliet,check=s,map=n,blocksize=2048) /root/iso/2.iso on /mnt/iso2 type iso9660 (ro,relatime,nojoliet,check=s,map=n,blocksize=2048) root@cloud:~/iso#
root@cloud:~/iso# ls /mnt/iso1/ dir root@cloud:~/iso# ls /mnt/iso2/ dir2 root@cloud:~/iso#
重新開啟一個shell
root@cloud:~# mount | grep 'iso[12]' /root/iso/1.iso on /mnt/iso1 type iso9660 (ro,relatime,nojoliet,check=s,map=n,blocksize=2048) root@cloud:~#
root@cloud:~/iso# ls /mnt/iso1/ dir root@cloud:~/iso# ls /mnt/iso2/ dir2 root@cloud:~/iso# umount /mnt/iso1/ root@cloud:~/iso# mount | grep 'iso[12]' /root/iso/2.iso on /mnt/iso2 type iso9660 (ro,relatime,nojoliet,check=s,map=n,blocksize=2048) root@cloud:~/iso# ls /mnt/iso1/ root@cloud:~/iso# ls /mnt/iso2/ dir2 root@cloud:~/iso#
重新開啟一個shell
root@cloud:~# mount | grep 'iso[12]' /root/iso/1.iso on /mnt/iso1 type iso9660 (ro,relatime,nojoliet,check=s,map=n,blocksize=2048) root@cloud:~# ls /mnt/iso1/ dir root@cloud:~#
mnt namespace: shared subtrees
root@cloud:~/iso# ls 1.iso 2.iso iso1 iso2 root@cloud:~/iso# mount --bind iso1 iso2 root@cloud:~/iso# ls iso2/ dir root@cloud:~/iso# mount --make-shared iso2 root@cloud:~/iso# unshare -m -u --propagation unchanged /bin/bash root@cloud:~/iso# grep 'iso1' /proc/self/mountinfo 563 513 7:0 / /mnt/iso1 ro,relatime shared:228 - iso9660 /dev/loop0 ro,nojoliet,check=s,map=n,blocksize=2048 564 513 8:34 /root/iso/iso1 /root/iso/iso2 rw,relatime shared:1 - ext4 /dev/sdc2 rw,errors=remount-ro,stripe=64 root@cloud:~/iso# mkdir sub root@cloud:~/iso# ls 1.iso 2.iso iso1 iso2 sub root@cloud:~/iso# mount --bind sub iso2/subfoo mount: iso2/subfoo: mount point does not exist. root@cloud:~/iso# mkdir -p iso2/subfoo root@cloud:~/iso# mount --bind sub iso2/subfoo
root@cloud:~/iso# tree iso2 iso2 ├── dir └── subfoo 2 directories, 0 files root@cloud:~/iso# tree iso1 iso1 ├── dir └── subfoo 2 directories, 0 files root@cloud:~/iso#
root@cloud:~/iso# tree iso2 iso2 ├── dir └── subfoo 2 directories, 0 files root@cloud:~/iso# tree iso1 iso1 ├── dir └── subfoo 2 directories, 0 files root@cloud:~/iso#