【已解答】No space left on device 磁盘空间不足报错

报错信息：


OSError: [Errno 28] No space left on device: '/www/server/panel/temp//btwaf.zip'

REQUEST_DATE: 2022-09-04 16:35:05
PAN_VERSION: 7.9.3
  OS_VERSION: CentOS  7.8.2003 x86_64(Py3.7.9)
REMOTE_ADDR: 171.88.54.62
REQUEST_URI: POST /plugin?action=install_plugin
REQUEST_FORM: {'sName': 'btwaf', 'version': '9', 'min_version': '0.5'}
  USER_AGENT: Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/94.0.4606.71 Safari/537.36


Traceback (most recent call last):  File "/www/server/panel/BTPanel/__init__.py", line 1786, in publicObject    return run_exec().run(toObject, defs, get)  File "/www/server/panel/BTPanel/__init__.py", line 1734, in run    result = getattr(toObject,get.action)(get)  File "/www/server/panel/class/panelPlugin.py", line 745, in install_plugin    result = self.install_sync(pluginInfo,get)  File "/www/server/panel/class/panelPlugin.py", line 789, in install_sync    return self.__install_plugin(pluginInfo['name'], get.version)  File "/www/server/panel/class/panelPlugin.py", line 90, in __install_plugin    filename = self.__download_plugin(upgrade_plugin_name,upgrade_version)  File "/www/server/panel/class/panelPlugin.py", line 525, in __download_plugin    with open(filename,'wb+') as with_res_f:OSError: [Errno 28] No space left on device: '/www/server/panel/temp//btwaf.zip'

系统信息：

[root@C20220429134801 ~]# df -h
Filesystem      Size  Used Avail Use% Mounted on
devtmpfs        3.9G     0  3.9G   0% /dev
tmpfs           3.9G   20K  3.9G   1% /dev/shm
tmpfs           3.9G   17M  3.9G   1% /run
tmpfs           3.9G     0  3.9G   0% /sys/fs/cgroup
/dev/vda1        40G  2.2G   36G   6% /
/dev/vdb1        50G   21G   26G  46% /www
tmpfs           783M     0  783M   0% /run/user/0



是什么原因引起的呢?