我有一台運行 CentOS-6 和 Linux 2.6.32-696.18.7.el6.x86_64（是的，相當舊）的主機，我的根檔案系統上的磁碟空間不足。
檔案系統的大小為16G，du顯示檔案使用了大約3G。當然，我跑了lsof +L1，找到了保存之前未連結的大日誌檔案的進程（是的，有幾個這樣的進程，所以我殺死了它們），但檔案系統仍然滿了，任何東西都可以寫入它（不，索引節點很好，沒有可用的區塊）。
lsof +L1仍然顯示一些文件，但這些文件不會佔用太大的大小，所以我很確定我可以忽略它：
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NLINK NODE NAME
init 1 root 9r REG 253,0 10406312 0 131692 /var/lib/sss/mc/initgroups (deleted)
pickup 2761 postfix 8r REG 253,0 10406312 0 134123 /var/lib/sss/mc/initgroups (deleted)
dbus-daem 5232 dbus 4r REG 253,0 10406312 0 131692 /var/lib/sss/mc/initgroups (deleted)
hald 5271 haldaemon 19r REG 253,0 10406312 0 131692 /var/lib/sss/mc/initgroups (deleted)
ntpd 5528 ntp 4r REG 253,0 10406312 0 131730 /var/lib/sss/mc/initgroups (deleted)
qmgr 5631 postfix 8r REG 253,0 10406312 0 131730 /var/lib/sss/mc/initgroups (deleted)
crond 5655 root 8r REG 253,0 8406312 0 131792 /var/lib/sss/mc/passwd (deleted)
sssd 9042 root 16r REG 253,0 10406312 0 134123 /var/lib/sss/mc/initgroups (deleted)
sssd_be 9045 root 18r REG 253,0 10406312 0 134123 /var/lib/sss/mc/initgroups (deleted)
qemu-kvm 9606 root txt REG 253,0 4056888 0 397695 /usr/libexec/qemu-kvm (deleted)
qemu-kvm 16799 root txt REG 253,0 4056888 0 397695 /usr/libexec/qemu-kvm (deleted)
qemu-kvm 17419 root txt REG 253,0 4056888 0 397695 /usr/libexec/qemu-kvm (deleted)
polkitd 28420 root 8r REG 253,0 10406312 0 134123 /var/lib/sss/mc/initgroups (deleted)
qemu-kvm 28802 root txt REG 253,0 4056888 0 397695 /usr/libexec/qemu-kvm (deleted)
qemu-kvm 30171 root txt REG 253,0 4056888 0 397695 /usr/libexec/qemu-kvm (deleted)
qemu-kvm 32110 root txt REG 253,0 4056888 0 397695 /usr/libexec/qemu-kvm (deleted)
qemu-kvm 32419 root txt REG 253,0 4056888 0 397695 /usr/libexec/qemu-kvm (deleted)
qemu-kvm 32563 root txt REG 253,0 4056888 0 397695 /usr/libexec/qemu-kvm (deleted)
qemu-kvm 34762 root txt REG 253,0 4056888 0 397695 /usr/libexec/qemu-kvm (deleted)
qemu-kvm 37823 root txt REG 253,0 4056888 0 397695 /usr/libexec/qemu-kvm (deleted)
qemu-kvm 39088 root txt REG 253,0 4056888 0 397695 /usr/libexec/qemu-kvm (deleted)
qemu-kvm 41613 root txt REG 253,0 4056888 0 397695 /usr/libexec/qemu-kvm (deleted)
nrpe 45821 nrpe 4r REG 253,0 10406312 0 134123 /var/lib/sss/mc/initgroups (deleted)
sshd 52715 root 4w REG 253,0 10406312 0 134123 /var/lib/sss/mc/initgroups (deleted)
qemu-kvm 55329 root txt REG 253,0 4056888 0 397695 /usr/libexec/qemu-kvm (deleted)
我還應該嘗試做什麼（我很確定重新啟動會有所幫助，但我想避免這樣做）？
謝謝！