Error when installing pyspider: No space left on device, but when installing other programs, it can be installed normally. I have checked both df and df-li and they are not full. The following is the error message:

Downloading/unpacking pyspider
Downloading pyspider-0.3.9.tar.gz (109kB): 109kB downloaded

Cleaning up...
Exception:
Traceback (most recent call last):
File "/mnt/sdb/oak/sites_group/py3.5-env/lib/python3.4/ site-packages/pip/basecommand.py", line 122, in main

status = self.run(options, args)

File "/mnt/sdb/oak/sites_group/py3.5-env/lib/python3.4/site-packages/pip/commands/install.py", line 278, in run

requirement_set.prepare_files(finder, force_root_egg_info=self.bundle, bundle=self.bundle)

File "/mnt/sdb/oak/sites_group/py3.5-env/lib/python3.4/site-packages/pip/req.py", line 1197, in prepare_files

do_download,

File "/mnt/sdb/oak/sites_group/py3.5-env/lib/python3.4/site-packages/pip/req.py", line 1375, in unpack_url

self.session,

File "/mnt/sdb/oak/sites_group/py3.5-env/lib/python3.4/site-packages/pip/download.py", line 582, in unpack_http_url

unpack_file(temp_location, location, content_type, link)

File "/mnt/sdb/oak/sites_group/py3.5-env/lib/python3.4/site-packages/pip/util.py", line 625, in unpack_file

untar_file(filename, location)

File "/mnt/sdb/oak/sites_group/py3.5-env/lib/python3.4/site-packages/pip/util.py", line 584, in untar_file

destfp = open(path, 'wb')

OSError: [Errno 28] No space left on device: '/mnt/sdb/oak/sites_group/py3.5-env/build/pyspider/pyspider/libs/ListIO.py'

Please give me some advice. . .