/dev/root 毫无原因地已满。
“df -h”给出：
Filesystem Size Used Avail Use% Mounted on
/dev/root 20G 19G 0 100% /
devtmpfs 32G 0 32G 0% /dev
tmpfs 32G 0 32G 0% /dev/shm
tmpfs 32G 2.0M 32G 1% /run
tmpfs 5.0M 0 5.0M 0% /run/lock
tmpfs 32G 0 32G 0% /sys/fs/cgroup
/dev/sdd1 1.8T 68M 1.7T 1% /media/sdd1
/dev/md2 256G 237G 6.3G 98% /home
/dev/sdc1 1.8T 961G 780G 56% /media/sdc1
tmpfs 6.3G 0 6.3G 0% /run/user/0
xxxxxxx.ovh.net:/export/ftpbackup/xxxxxxxxxxxxxx 500G 438G 63G 88% /media/recovery
我删除了一堆日志文件，但 /dev/root 仍然保持在 100%。
“du -sch /*”给出：
13M /bin
20M /boot
0 /dev
11M /etc
236G /home
132M /lib
4.0K /lib64
16K /lost+found
1.4T /media
4.0K /mnt
4.0K /opt
/media 包含一些已挂载的磁盘。/home 是另一个已挂载的磁盘。
使用以下三个命令可以获取更多信息：
du -a --exclude=./home/* --exclude=./media/* | sort -nr | head -n 50：
du: cannot access ‘./proc/9221/task/9221/fd/4’: No such file or directory
du: cannot access ‘./proc/9221/task/9221/fdinfo/4’: No such file or directory
du: cannot access ‘./proc/9221/fd/4’: No such file or directory
du: cannot access ‘./proc/9221/fdinfo/4’: No such file or directory
2763728 .
1420340 ./usr
1020940 ./var
713876 ./var/lib
657508 ./usr/lib
386408 ./var/lib/apt
386336 ./var/lib/apt/lists
375756 ./usr/share
287900 ./var/log
273512 ./usr/lib/x86_64-linux-gnu
lsof | grep 已删除
dovecot 2981 root 123u REG 0,16 0 17700 /run/dovecot/login-master-notifya6da78e256a4d799 (deleted)
dovecot 2981 root 126u REG 0,16 0 17702 /run/dovecot/login-master-notify306e18b42143ac3c (deleted)
squid3 3012 root 3u REG 9,1 12288 261210 /var/log/squid3/cache.log.1 (deleted)
squid3 3014 proxy 3u REG 9,1 12288 261210 /var/log/squid3/cache.log.1 (deleted)
apache2 5667 root 13u REG 9,1 0 261317 /tmp/.ZendSem.YO4QIp (deleted)
apache2 5667 root 14w REG 0,17 0 23690739 /run/lock/apache2/ssl-cache.5626 (deleted)
apache2 5667 root 15w REG 0,17 0 23690743 /run/lock/apache2/proxy.5667 (deleted)
apache2 5667 root 16w REG 0,17 0 23690744 /run/lock/apache2/rewrite-map.5667 (deleted)
apache2 5667 root 17w REG 0,17 0 23690747 /run/lock/apache2/mpm-accept.5667 (deleted)
apache2 5709 www-data 13u REG 9,1 0 261317 /tmp/.ZendSem.YO4QIp (deleted)
apache2 5709 www-data 14w REG 0,17 0 23690739 /run/lock/apache2/ssl-cache.5626 (deleted)
apache2 5709 www-data 15w REG 0,17 0 23690743 /run/lock/apache2/proxy.5667 (deleted)
apache2 5709 www-data 16w REG 0,17 0 23690744 /run/lock/apache2/rewrite-map.5667 (deleted)
apache2 5709 www-data 17w REG 0,17 0 23690747 /run/lock/apache2/mpm-accept.5667 (deleted)
apache2 5710 www-data 13u REG 9,1 0 261317 /tmp/.ZendSem.YO4QIp (deleted)
apache2 5710 www-data 14w REG 0,17 0 23690739 /run/lock/apache2/ssl-cache.5626 (deleted)
apache2 5710 www-data 15w REG 0,17 0 23690743 /run/lock/apache2/proxy.5667 (deleted)
apache2 5710 www-data 16w REG 0,17 0 23690744 /run/lock/apache2/rewrite-map.5667 (deleted)
apache2 5710 www-data 17w REG 0,17 0 23690747 /run/lock/apache2/mpm-accept.5667 (deleted)
apache2 7171 www-data 13u REG 9,1 0 261317 /tmp/.ZendSem.YO4QIp (deleted)
apache2 7171 www-data 14w REG 0,17 0 23690739 /run/lock/apache2/ssl-cache.5626 (deleted)
apache2 7171 www-data 15w REG 0,17 0 23690743 /run/lock/apache2/proxy.5667 (deleted)
apache2 7171 www-data 16w REG 0,17 0 23690744 /run/lock/apache2/rewrite-map.5667 (deleted)
apache2 7171 www-data 17w REG 0,17 0 23690747 /run/lock/apache2/mpm-accept.5667 (deleted)
apache2 8531 www-data 13u REG 9,1 0 261317 /tmp/.ZendSem.YO4QIp (deleted)
apache2 8531 www-data 14w REG 0,17 0 23690739 /run/lock/apache2/ssl-cache.5626 (deleted)
apache2 8531 www-data 15w REG 0,17 0 23690743 /run/lock/apache2/proxy.5667 (deleted)
apache2 8531 www-data 16w REG 0,17 0 23690744 /run/lock/apache2/rewrite-map.5667 (deleted)
apache2 8531 www-data 17w REG 0,17 0 23690747 /run/lock/apache2/mpm-accept.5667 (deleted)
apache2 8532 www-data 13u REG 9,1 0 261317 /tmp/.ZendSem.YO4QIp (deleted)
apache2 8532 www-data 14w REG 0,17 0 23690739 /run/lock/apache2/ssl-cache.5626 (deleted)
apache2 8532 www-data 15w REG 0,17 0 23690743 /run/lock/apache2/proxy.5667 (deleted)
apache2 8532 www-data 16w REG 0,17 0 23690744 /run/lock/apache2/rewrite-map.5667 (deleted)
apache2 8532 www-data 17wW REG 0,17 0 23690747 /run/lock/apache2/mpm-accept.5667 (deleted)
apache2 8533 www-data 13u REG 9,1 0 261317 /tmp/.ZendSem.YO4QIp (deleted)
apache2 8533 www-data 14w REG 0,17 0 23690739 /run/lock/apache2/ssl-cache.5626 (deleted)
apache2 8533 www-data 15w REG 0,17 0 23690743 /run/lock/apache2/proxy.5667 (deleted)
apache2 8533 www-data 16w REG 0,17 0 23690744 /run/lock/apache2/rewrite-map.5667 (deleted)
apache2 8533 www-data 17w REG 0,17 0 23690747 /run/lock/apache2/mpm-accept.5667 (deleted)
apache2 8536 www-data 13u REG 9,1 0 261317 /tmp/.ZendSem.YO4QIp (deleted)
apache2 8536 www-data 14w REG 0,17 0 23690739 /run/lock/apache2/ssl-cache.5626 (deleted)
apache2 8536 www-data 15w REG 0,17 0 23690743 /run/lock/apache2/proxy.5667 (deleted)
apache2 8536 www-data 16w REG 0,17 0 23690744 /run/lock/apache2/rewrite-map.5667 (deleted)
apache2 8536 www-data 17w REG 0,17 0 23690747 /run/lock/apache2/mpm-accept.5667 (deleted)
apache2 8537 www-data 13u REG 9,1 0 261317 /tmp/.ZendSem.YO4QIp (deleted)
apache2 8537 www-data 14w REG 0,17 0 23690739 /run/lock/apache2/ssl-cache.5626 (deleted)
apache2 8537 www-data 15w REG 0,17 0 23690743 /run/lock/apache2/proxy.5667 (deleted)
apache2 8537 www-data 16w REG 0,17 0 23690744 /run/lock/apache2/rewrite-map.5667 (deleted)
apache2 8537 www-data 17w REG 0,17 0 23690747 /run/lock/apache2/mpm-accept.5667 (deleted)
apache2 8538 www-data 13u REG 9,1 0 261317 /tmp/.ZendSem.YO4QIp (deleted)
apache2 8538 www-data 14w REG 0,17 0 23690739 /run/lock/apache2/ssl-cache.5626 (deleted)
apache2 8538 www-data 15w REG 0,17 0 23690743 /run/lock/apache2/proxy.5667 (deleted)
apache2 8538 www-data 16w REG 0,17 0 23690744 /run/lock/apache2/rewrite-map.5667 (deleted)
apache2 8538 www-data 17w REG 0,17 0 23690747 /run/lock/apache2/mpm-accept.5667 (deleted)
apache2 8683 www-data 13u REG 9,1 0 261317 /tmp/.ZendSem.YO4QIp (deleted)
apache2 8683 www-data 14w REG 0,17 0 23690739 /run/lock/apache2/ssl-cache.5626 (deleted)
apache2 8683 www-data 15w REG 0,17 0 23690743 /run/lock/apache2/proxy.5667 (deleted)
apache2 8683 www-data 16w REG 0,17 0 23690744 /run/lock/apache2/rewrite-map.5667 (deleted)
apache2 8683 www-data 17w REG 0,17 0 23690747 /run/lock/apache2/mpm-accept.5667 (deleted)
更多/etc/mtab
rootfs / rootfs rw 0 0
/dev/root / ext4 rw,relatime,discard,errors=remount-ro,data=ordered 0 0
devtmpfs /dev devtmpfs rw,relatime,size=32931784k,nr_inodes=8232946,mode=755 0 0
sysfs /sys sysfs rw,relatime 0 0
proc /proc proc rw,relatime 0 0
securityfs /sys/kernel/security securityfs rw,nosuid,nodev,noexec,relatime 0 0
tmpfs /dev/shm tmpfs rw,nosuid,nodev 0 0
devpts /dev/pts devpts rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000 0 0
tmpfs /run tmpfs rw,nosuid,nodev,mode=755 0 0
tmpfs /run/lock tmpfs rw,nosuid,nodev,noexec,relatime,size=5120k 0 0
tmpfs /sys/fs/cgroup tmpfs ro,nosuid,nodev,noexec,mode=755 0 0
cgroup /sys/fs/cgroup/systemd cgroup rw,nosuid,nodev,noexec,relatime,xattr,release_agent=/lib/systemd/systemd-cgroups-agent,name=systemd 0 0
pstore /sys/fs/pstore pstore rw,nosuid,nodev,noexec,relatime 0 0
cgroup /sys/fs/cgroup/memory cgroup rw,nosuid,nodev,noexec,relatime,memory 0 0
cgroup /sys/fs/cgroup/net_cls,net_prio cgroup rw,nosuid,nodev,noexec,relatime,net_cls,net_prio 0 0
cgroup /sys/fs/cgroup/cpuset cgroup rw,nosuid,nodev,noexec,relatime,cpuset,clone_children 0 0
cgroup /sys/fs/cgroup/freezer cgroup rw,nosuid,nodev,noexec,relatime,freezer 0 0
cgroup /sys/fs/cgroup/cpu,cpuacct cgroup rw,nosuid,nodev,noexec,relatime,cpu,cpuacct 0 0
cgroup /sys/fs/cgroup/devices cgroup rw,nosuid,nodev,noexec,relatime,devices 0 0
cgroup /sys/fs/cgroup/blkio cgroup rw,nosuid,nodev,noexec,relatime,blkio 0 0
systemd-1 /proc/sys/fs/binfmt_misc autofs rw,relatime,fd=28,pgrp=1,timeout=300,minproto=5,maxproto=5,direct 0 0
sunrpc /run/rpc_pipefs rpc_pipefs rw,relatime 0 0
mqueue /dev/mqueue mqueue rw,relatime 0 0
fusectl /sys/fs/fuse/connections fusectl rw,relatime 0 0
configfs /sys/kernel/config configfs rw,relatime 0 0
/dev/sdd1 /media/sdd1 ext4 rw,relatime,data=ordered 0 0
/dev/md2 /home ext4 rw,relatime,discard,data=ordered 0 0
/dev/sdc1 /media/sdc1 ext4 rw,relatime,data=ordered 0 0
binfmt_misc /proc/sys/fs/binfmt_misc binfmt_misc rw,relatime 0 0
tmpfs /run/user/0 tmpfs rw,nosuid,nodev,relatime,size=6593060k,mode=700 0 0
xxxxxxxxxxxxx.net:/export/ftpbackup/xxxxxxxxxxxxxxxxxxxx /media/recovery nfs rw,relatime,vers=3,rsize=524288,wsize=524288,namlen=255,hard,proto=tcp,timeo=
600,retrans=2,sec=sys,mountaddr=xx.xx.xx.xx,mountvers=3,mountport=53313,mountproto=tcp,local_lock=none,addr=xx.xx.xx.xx 0 0