Geu*_*uis 4 ubuntu disk-space-utilization
我昨天从 13.10 -> 14.04 -> 14.10 -> 15.10 升级了旧服务器。今天我看到 100% 的磁盘空间正在使用，但我无法追踪使用情况。
当我运行时，du -h --max-depth=1 /我得到以下日志，它似乎表明根路径已满，但我不知道来源是什么。
du: cannot read directory ‘/proc/4390/task/4390/ns’: Permission denied
du: cannot read directory ‘/proc/4390/fd’: Permission denied
du: cannot read directory ‘/proc/4390/map_files’: Permission denied
du: cannot read directory ‘/proc/4390/fdinfo’: Permission denied
du: cannot read directory ‘/proc/4390/ns’: Permission denied
du: cannot read directory ‘/proc/4392/task/4392/fd’: Permission denied
du: cannot read directory ‘/proc/4392/task/4392/fdinfo’: Permission denied
du: cannot read directory ‘/proc/4392/task/4392/ns’: Permission denied
du: cannot read directory ‘/proc/4392/fd’: Permission denied
du: cannot read directory ‘/proc/4392/map_files’: Permission denied
du: cannot read directory ‘/proc/4392/fdinfo’: Permission denied
du: cannot read directory ‘/proc/4392/ns’: Permission denied
du: cannot access ‘/proc/4393/task/4393/fd/3’: No such file or directory
du: cannot access ‘/proc/4393/task/4393/fdinfo/3’: No such file or directory
du: cannot access ‘/proc/4393/fd/4’: No such file or directory
du: cannot access ‘/proc/4393/fdinfo/4’: No such file or directory
0 /proc
du: cannot read directory ‘/sys/kernel/debug’: Permission denied
0 /sys
4.0K /mnt
1.5G /usr
du: cannot read directory ‘/root’: Permission denied
4.0K /root
4.0K /srv
104M /home
7.6M /sbin
12M /bin
47M /boot
du: cannot read directory ‘/var/lib/snmp/mib_indexes’: Permission denied
du: cannot read directory ‘/var/lib/php5’: Permission denied
du: cannot read directory ‘/var/lib/mysql’: Permission denied
du: cannot read directory ‘/var/lib/sudo’: Permission denied
du: cannot read directory ‘/var/lib/nginx/proxy’: Permission denied
du: cannot read directory ‘/var/lib/nginx/uwsgi’: Permission denied
du: cannot read directory ‘/var/lib/nginx/scgi’: Permission denied
du: cannot read directory ‘/var/lib/nginx/body’: Permission denied
du: cannot read directory ‘/var/lib/nginx/fastcgi’: Permission denied
du: cannot read directory ‘/var/log/unattended-upgrades’: Permission denied
du: cannot read directory ‘/var/log/mysql’: Permission denied
du: cannot read directory ‘/var/log/nginx’: Permission denied
du: cannot read directory ‘/var/spool/rsyslog’: Permission denied
du: cannot read directory ‘/var/spool/cron/atspool’: Permission denied
du: cannot read directory ‘/var/spool/cron/crontabs’: Permission denied
du: cannot read directory ‘/var/spool/cron/atjobs’: Permission denied
du: cannot read directory ‘/var/cache/ldconfig’: Permission denied
du: cannot read directory ‘/var/cache/nginx’: Permission denied
18G /var
8.0K /media
4.0K /lib64
du: cannot read directory ‘/run/log/journal/41cc217bd9afc046de32243850804999’: Permission denied
du: cannot read directory ‘/run/systemd/inaccessible’: Permission denied
1.5M /run
359M /lib
0 /dev
4.0K /opt
20G /
当我ls -la在/我看到这个：
total 100
drwxr-xr-x 22 root root 4096 Jul 16 00:21 .
drwxr-xr-x 22 root root 4096 Jul 16 00:21 ..
drwxr-xr-x 2 root root 4096 Jul 16 00:16 bin
drwxr-xr-x 3 root root 4096 Jul 16 00:21 boot
drwxr-xr-x 13 root root 13680 Jul 16 18:46 dev
drwxr-xr-x 108 root root 12288 Jul 16 00:23 etc
drwxr-xr-x 3 root root 4096 Jul 15 23:23 home
lrwxrwxrwx 1 root root 32 Jul 16 00:18 initrd.img -> boot/initrd.img-4.2.0-42-generic
drwxr-xr-x 21 root root 4096 Jul 16 00:16 lib
drwxr-xr-x 2 root root 4096 Jul 16 00:14 lib64
drwx------ 2 root root 16384 Oct 18 2012 lost+found
drwxr-xr-x 3 root root 4096 Jul 15 23:21 media
drwxr-xr-x 2 root root 4096 Oct 9 2012 mnt
drwxr-xr-x 2 root root 4096 Oct 17 2012 opt
dr-xr-xr-x 169 root root 0 Jul 16 18:46 proc
drwx------ 5 root root 4096 Jul 15 23:21 root
drwxr-xr-x 19 root root 740 Jul 16 18:49 run
drwxr-xr-x 2 root root 12288 Jul 16 00:16 sbin
drwxr-xr-x 2 root root 4096 Oct 17 2012 srv
dr-xr-xr-x 13 root root 0 Jul 16 18:57 sys
drwxrwxrwt 7 root root 4096 Jul 16 19:04 tmp
drwxr-xr-x 10 root root 4096 Jul 15 23:23 usr
drwxr-xr-x 14 root root 4096 Jul 16 00:17 var
lrwxrwxrwx 1 root root 29 Jul 16 00:18 vmlinuz -> boot/vmlinuz-4.2.0-42-generic
同样，没有看到什么在使用磁盘空间。
我应该在这里做哪些步骤？
Pau*_*bro 10
运行以下命令查找可用磁盘空间信息：
df -h
然后运行以下命令查找磁盘利用率信息：
sudo du -shc /
（注意sudo，这应该可以解决您看到的权限问题）
当您发现某个目录占用了大量磁盘空间时，cd转到该目录并重复步骤 #2。继续重复此步骤，直到您确定磁盘空间问题的根源。