尽管具有正确的权限和组，但无法写入目录

一直在用wordpress病毒进行攻击并在我的一个站点中写入文件。我注意到的一件奇怪的事情是，即使具有root用户，我也无法写入该目录。目录为755。尝试写入具有相同权限的另一个目录。

root@console:/var/www/clients/client3/web22# whoami
root

root@console:/var/www/clients/client3/web22# groups root
root : root

root@console:/var/www/clients/client3/web22# ls -alh
total 29M
drwxr-xr-x 8 root  root    4.0K Sep 13 11:09 .
drwxr-xr-x 6 root  root    4.0K Oct  5 15:04 ..
drwxr-xr-x 2 web22 client3 4.0K Feb 18  2016 cgi-bin
drwxr-xr-x 2 root  root    4.0K Nov  2  2016 log
drwxr-x--x 7 web22 client3 4.0K Oct  5 14:54 web

root@console:/var/www/clients/client3/web22# touch test
touch: cannot touch ‘test’: Permission denied

root@console:/var/www/clients/client3/web22# mkdir test
mkdir: cannot create directory ‘test’: Permission denied

这是另一个具有相同权限，相同用户和同一台计算机的文件夹：

root@console:/var/www/clients/client5/web24# ls -lah
total 32K
drwxr-xr-x 8 root  root    4.0K Oct  5 15:12 .
drwxr-xr-x 4 root  root    4.0K Mar 24  2016 ..
drwxr-xr-x 2 web24 client5 4.0K Feb 19  2016 cgi-bin
drwxr-xr-x 2 root  root    4.0K Nov  2  2016 log
drwxr-x--x 9 web24 client5 4.0K Mar 19  2016 web

root@console:/var/www/clients/client5/web24# touch test
root@console:/var/www/clients/client5/web24# rm test

为什么我无法将任何内容写到/ var / www / clients / client3 / web22文件夹，并且除了组和用户之外，还有其他东西可以拒绝写到目录吗？

编辑-添加必要的信息：

root@console:/var/www/clients/client3/web22# cat /proc/version
Linux version 3.16.0-4-amd64 ([email protected]) (gcc version 4.8.4 (Debian 4.8.4-1) ) #1 SMP Debian 3.16.36-1+deb8u1 (2016-09-03)

root@console:/var/www/clients/client3# lsattr
----i--------e-- ./web22
-------------e-- ./web13

root@console:/var/www/clients/client3# lsattr web22
-------------e-- web22/cgi-bin
-------------e-- web22/web
-------------e-- web22/log


root@console:/var/www/clients/client3# getfacl web22
# file: web22
# owner: root
# group: root
user::rwx
group::r-x
other::r-x

root@console:/var/www/clients/client3# getfacl .
# file: .
# owner: root
# group: root
user::rwx
group::r-x
other::r-x