在 aws 上编译 lxml，现在了硬盘不够用的问题。之前清理过，但是命令什么都忘了，便想写个笔记记录一下，这个no space left on devices。

testapi.c:52172:1: fatal error: error writing to /tmp/cc7IY2vY.s: No space left on device
 }
 ^
compilation terminated.
The bug is not reproducible, so it is likely a hardware or OS problem.
make[2]: *** [testapi.o] Error 1
make[2]: Leaving directory `/root/libxml2-2.9.2'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/root/libxml2-2.9.2'
make: *** [all] Error 2

查看磁盘空间

(play-env)➜  libxml2-2.9.2 df -alh
Filesystem      Size  Used Avail Use% Mounted on
rootfs             -     -     -    - /
proc               0     0     0    - /proc
sysfs              0     0     0    - /sys
devtmpfs        491M   56K  491M   1% /dev
devpts             0     0     0    - /dev/pts
tmpfs           499M     0  499M   0% /dev/shm
/dev/xvda1       16G   16G     0 100% /
none               0     0     0    - /proc/sys/fs/binfmt_misc

查看每个目录的情况

(play-env)➜  /usr du -ah --max-depth=1
0   ./tmp
544M    ./share
431M    ./lib
4.0K    ./etc
2.4G    ./local
31M ./sbin
625M    ./lib64
165M    ./include
220M    ./src
4.0K    ./games
571M    ./bin
69M ./libexec
5.0G    .

找到根源：

➜  wwwlogs du -ah --max-depth=1
800K    ./report.html
4.0K    ./.goaccessrc
12K ./goaccess.conf
0   ./report.csv
8.1M    ./xz.phodal.net.log
480K    ./report.json
860M    ./blog.phodal.com.log
2.1M    ./leanjs.net.log
2.1M    ./nginx_error.log
860M    ./www.hug8217.com.log
3.4M    ./b.phodal.com.log
2.5G    ./access.log
4.2G    .

然后就是：rm -rf xxx.log

释放 rm rf 空间

可是这并没有删除文件，空间还是没有增多，必须再执行：

sudo /usr/sbin/lsof | grep deleted

可问题没有解决：

➜  wwwlogs df -h
Filesystem      Size  Used Avail Use% Mounted on
/dev/xvda1       16G   16G  171M  99% /
devtmpfs        491M   56K  491M   1% /dev
tmpfs           499M     0  499M   0% /dev/shm

因为 Nginx 并没有结束，因此需要重启，才能释放它所占用的空间：

➜  wwwlogs /etc/init.d/nginx restart
Stoping nginx...  done
Starting nginx...  done
➜  wwwlogs df -alh
Filesystem      Size  Used Avail Use% Mounted on
rootfs             -     -     -    - /
proc               0     0     0    - /proc
sysfs              0     0     0    - /sys
devtmpfs        491M   56K  491M   1% /dev
devpts             0     0     0    - /dev/pts
tmpfs           499M     0  499M   0% /dev/shm
/dev/xvda1       16G   12G  4.3G  73% /
none               0     0     0    - /proc/sys/fs/binfmt_misc