md1 上的磁盘空间几乎已满
[root@server ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/md1 20G 18G 645M 97% /
tmpfs 7.8G 0 7.8G 0% /dev/shm
/dev/md0 283M 33M 236M 12% /boot
/dev/md2 897G 795M 851G 1% /data
在 md2 /data 目录中我有很多可用空间，如何在不进入救援模式的情况下将可用空间从 md2 切换到 md1？
[root@server /]# cd /
[root@server /]# du -sch * | grep M
7.6M bin
31M boot
723M data
29M etc
468M home
157M lib
23M lib64
du: cannot access `proc/22430/task/22430/fd/4': No such file or directory
du: cannot access `proc/22430/task/22430/fdinfo/4': No such file or directory
du: cannot access `proc/22430/fd/4': No such file or directory
du: cannot access `proc/22430/fdinfo/4': No such file or directory
8.0M root
14M sbin
5.3M tmp
[root@server /]# cd /var/log
[root@server log]# du -sch * | grep M
26M audit
1.4M btmp-20150301
11M dovecot-info.log
476M exim
3.7M lfd.log
4.9M maillog
4.6M messages
1.1M messages-20150208
7.0M messages-20150215
5.6M messages-20150222
5.7M messages-20150301
4.4M pureftpd.log
21M sa
1.1M secure-20150215
13M secure-20150222
588M total
[root@server log]# cd /usr
[root@server usr]# du -sch * | grep M
35M bin
17M include
110M lib
91M lib64
24M libexec
37M sbin
302M share
已编辑 2
[root@server ~]# lsof +L1
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NLINK NODE NAME
mdadm 1411 root txt REG 9,1 467440 0 161 /sbin/mdadm (deleted)
hald 1568 haldaemon txt REG 9,1 351168 0 266999 /usr/sbin/hald (deleted)
hald-runn 1569 root txt REG 9,1 16928 0 266960 /usr/libexec/hald-runner (deleted)
hald-addo 1601 root txt REG 9,1 24744 0 266941 /usr/libexec/hald-addon-input.#prelink#.nkT9K9 (deleted)
hald-addo 1617 haldaemon txt REG 9,1 15296 0 266937 /usr/libexec/hald-addon-acpi.#prelink#.4NsGVw (deleted)
mysqld_sa 1680 root txt REG 9,1 904872 0 392386 /bin/bash (deleted)
mysqld 1934 mysql 4u REG 9,1 0 0 917704 /tmp/ibrkEfYt (deleted)
mysqld 1934 mysql 5u REG 9,1 0 0 917705 /tmp/ibG7f1i1 (deleted)
mysqld 1934 mysql 6u REG 9,1 0 0 917706 /tmp/ibG12MDy (deleted)
mysqld 1934 mysql 7u REG 9,1 0 0 917707 /tmp/ibCjMu25 (deleted)
mysqld 1934 mysql 11u REG 9,1 0 0 917708 /tmp/ib90nO6D (deleted)
dovecot 1964 root txt REG 9,1 66088 0 280950 /usr/sbin/dovecot (deleted)
dovecot 1964 root 96u REG 9,1 0 0 653985 /var/run/dovecot/login-master-notify398b00503e1dc567 (deleted)
dovecot 1964 root 111u REG 9,1 0 0 660088 /var/run/dovecot/login-master-notify1ede7cc8b66b8ff2 (deleted)
anvil 1985 dovecot txt REG 9,1 19816 0 280921 /usr/libexec/dovecot/anvil (deleted)
log 1986 root txt REG 9,1 17288 0 280939 /usr/libexec/dovecot/log (deleted)
php-fpm 2112 root 3u REG 9,1 0 0 920999 /tmp/.ZendSem.zjwiD4 (deleted)
php-fpm 2113 tajneala 3u REG 9,1 0 0 920999 /tmp/.ZendSem.zjwiD4 (deleted)
php-fpm 2114 tajneala 3u REG 9,1 0 0 920999 /tmp/.ZendSem.zjwiD4 (deleted)
php-fpm 2115 tajneala 3u REG 9,1 0 0 920999 /tmp/.ZendSem.zjwiD4 (deleted)
php-fpm 2116 tajneala 3u REG 9,1 0 0 920999 /tmp/.ZendSem.zjwiD4 (deleted)
php-fpm 2117 tajneala 3u REG 9,1 0 0 920999 /tmp/.ZendSem.zjwiD4 (deleted)
php-fpm 2118 tajneala 3u REG 9,1 0 0 920999 /tmp/.ZendSem.zjwiD4 (deleted)
mingetty 2186 root txt REG 9,1 15256 0 82 /sbin/mingetty (deleted)
mingetty 2188 root txt REG 9,1 15256 0 82 /sbin/mingetty (deleted)
mingetty 2190 root txt REG 9,1 15256 0 82 /sbin/mingetty (deleted)
mingetty 2192 root txt REG 9,1 15256 0 82 /sbin/mingetty (deleted)
mingetty 2194 root txt REG 9,1 15256 0 82 /sbin/mingetty (deleted)
mingetty 2196 root txt REG 9,1 15256 0 82 /sbin/mingetty (deleted)
nrsysmond 5789 newrelic txt REG 9,1 4654616 0 281503 /usr/sbin/nrsysmond (deleted)
nrsysmond 5790 newrelic txt REG 9,1 4654616 0 281503 /usr/sbin/nrsysmond (deleted)
编辑3
[root@server ~]# cd /
[root@server /]# du -sch * | grep G
du: cannot access `proc/29259/task/29259/fd/4': No such file or directory
du: cannot access `proc/29259/task/29259/fdinfo/4': No such file or directory
du: cannot access `proc/29259/fd/4': No such file or directory
du: cannot access `proc/29259/fdinfo/4': No such file or directory
16G usr
1.2G var
19G total
[root@server /]# cd /var/log
[root@server log]# du -sch * | grep G
[root@server log]# cd /usr
[root@server usr]# du -sch * | grep G
16G local
16G total
[root@server usr]#
编辑4
[root@server ~]# du -a /usr | sort -n -r | head -n 20
16370388 /usr
15742324 /usr/local
15491028 /usr/local/apps
14599360 /usr/local/apps/apache
14569328 /usr/local/apps/apache/logs
14184552 /usr/local/apps/apache/logs/myDOMAIN.com.log
380100 /usr/local/apps/apache/logs/suphp55_log
309236 /usr/share
290736 /usr/local/apps/mysql
201760 /usr/local/apps/php55
179020 /usr/local/emps
155700 /usr/local/apps/lib
145100 /usr/local/apps/mysql/bin
129960 /usr/local/apps/mysql/share
124440 /usr/local/apps/mysql/share/mysql-test
112252 /usr/lib
96800 /usr/lib/locale
96796 /usr/lib/locale/locale-archive
95936 /usr/local/apps/mysql/share/mysql-test/suite
95416 /usr/local/apps/python2
答案1
首先你需要确定是什么填满了 / 文件系统，搜索 SFlinux full disk。一旦您知道问题的原因，您就可以专注于解决方案。但很有可能是 /var/log 中的日志文件变得太大而需要修剪，您可能可以通过logrotate适当配置来解决问题，您可能需要移动 /var，这是非平凡的。
最终，当您查找磁盘中的内容时发现的内容将决定您是否必须使用救援模式，但您不太可能幸运。
查看您的编辑，似乎您可能有一个未链接的打开文件，请查看输出lsof +L1。
并且根据最新的编辑，我会说我对您需要 logrotate/usr/local/apps/apache/logs/myDOMAIN.com.log文件需要管理的说法是正确的。